Contact Info
Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf
LC
Citations 5
"The Use Of Titanium Dioxide As A Photo-catalyst To Improve The Sensitivity Of Post-column Photolysis-electrochemical Detection For Microbore Liquid Chromatography"
Anal. Chim. Acta
1997 Volume 356, Issue 2-3 Pages 177-186
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Jones', 'title' => 'The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0356P00177', 'year' => '1997', 'volume' => '356', 'issue' => '2-3', 'startpage' => '177', 'endpage' => '186', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0054;', 'keywords' => ';0339;0323;0067;', 'abstract' => 'Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. 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Jones', 'title' => 'The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0356P00177', 'year' => '1997', 'volume' => '356', 'issue' => '2-3', 'startpage' => '177', 'endpage' => '186', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0054;', 'keywords' => ';0339;0323;0067;', 'abstract' => 'Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. 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Acta, 1997 356(2-3) 177-186', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 1 => array( 'id' => '008615', 'authors' => 'Renn, C.N.;Synovec, R.E.', 'authorsweb' => 'Curtiss N. Renn and Robert E. Synovec', 'title' => 'Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', 'journal' => 'Anal. Chem.', 'journal_id' => '0499', 'fadid' => 'ANCH1991V0063P00568', 'year' => '1991', 'volume' => '63', 'issue' => '6', 'startpage' => '568', 'endpage' => '574', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0493;', 'keywords' => ';0056;0086;0184;0188;0300;0381;', 'abstract' => 'A single fiber-optic two-wavelength detector is described for remote sensing in thermal-gradient microbore LC (TGMLC). Theoretical relationships are derived relating changes in the refractive index of the LC mobile phase to aperture-limited absorbance measurements. The use of the detector system was illustrated by the reversed-phase separation of unleaded gasoline on a C18 column, with a temperature gradient of 25°C to 150°C over 30 min, methanol - water as the mobile phase and detection at 230 and 295 nm. The detector reduced the baseline drift associated with thermally induced refractive index aberrations, not only for TGMLC but also for mobile-phase gradient LC and flow injection analysis. The advantages of the TGMLC technique are discussed.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '3', 'urlcheck' => '2014-10-11 18:36:18', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00371', 'pauthor' => '!Synovec, R.E.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1021/ac00006a005', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', Anal. Chem., 1991 63(6) 568-574', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 2 => array( 'id' => '011018', 'authors' => 'Celma, A.', 'authorsweb' => 'NA', 'title' => 'Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', 'journal' => 'Adv. Mass Spectrom.', 'journal_id' => '1525', 'fadid' => 'ADMS1998V0014P00001', 'year' => '1998', 'volume' => '14', 'issue' => '1', 'startpage' => '1', 'endpage' => '19', 'type' => 'Journal Article', 'analytes' => ';1749;', 'matrices' => 'NA', 'techniques' => ';0364;0043;', 'keywords' => ';0043;', 'abstract' => 'We shall describe a micro-HPLC-UV-Cf-LSIMS system that allows to work in several modes, i.e., flow injection analysis using a µinjector, capillary HPLC injecting µvolumes. and sample pre-concentration on the top of the column using a standard injector and gradient elution. All these arrangements were tested employing Lanreotide (D-β-Nal-Cys-Try-D-Trp-Lys-Val-Cys-Thr-NH2) as a model peptide.', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-03-29 09:48:49', 'hits' => '0', 'urlcheck' => '2007-03-29 09:48:50', 'urlcheckcode' => '', 'pauthor_id' => null, 'pauthor' => 'Celma, A.', 'address' => 'NA', 'email' => 'NA', 'notes' => 'NA SJC 101714 Book', 'url' => 'NA', 'urltype' => 'NA', 'gotpdf' => 'no', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', Adv. Mass Spectrom., 1998 14(1) 1-19', 'firstchar' => 'P', 'twochars' => 'Pe', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 3 => array( 'id' => '011445', 'authors' => 'Hara, T.;Tsukagoshi, K.;Kurita, Y.', 'authorsweb' => 'Tadashi Hara,Kazuhiko Tsukagoshi and Yuichiro Kurita', 'title' => 'Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', 'journal' => 'Bull. Chem. Soc. Jpn.', 'journal_id' => '0540', 'fadid' => 'BCSJ1989V0062P01501', 'year' => '1989', 'volume' => '62', 'issue' => '5', 'startpage' => '1501', 'endpage' => '1508', 'type' => 'Journal Article', 'analytes' => ';2008;1041;0092;', 'matrices' => ';0116;', 'techniques' => ';0043;0023;', 'keywords' => ';0302;0109;0054;', 'abstract' => 'The adsorption behavior of proteins (human serum albumin and γ-globulin) on molecular sieve 13X (100 to 120 mesh; pore diameter 10 .angstrom.) was examined by the depletion method in aqueous solution and by using a column, with detection at 280 nm in each instance. Globulin was adsorbed by the zeolite but albumin was not. Conditions were optimized for separating and determining the two proteins by a flow injection - chemiluminescence system (illustrated) with 1,10-phenanthroline - H2O2 - Cu(II) (Ibid., 1986, 59, 1833) as reagent. A detection limit of 1 ng, an analytical range of 0.02 to 5 mg L-1 and coefficient of variation of 5.4 and 8.3% (n = 5) at 1 mg L-1 were achieved for albumin and γ-globulin, respectively, by using a microbore column (25 cm x 1 mm) of NaX zeolite, 10 mM phosphate buffer of pH 6.4 to 6.5 as carrier solution, and 13.2 mM NaOH - 5 mM NaCl (pH 12.0) as eluent. The method was applied in analysis of serum.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-04-03 12:00:33', 'hits' => '5', 'urlcheck' => '2014-10-12 00:11:52', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01448', 'pauthor' => '!Hara, T.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1246/bcsj.62.1501', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', Bull. Chem. Soc. Jpn., 1989 62(5) 1501-1508', 'firstchar' => 'D', 'twochars' => 'De', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ), (int) 4 => array( 'id' => '011953', 'authors' => 'Jansen, H.;Brinkman, U.A.T.;Frei, R.W.', 'authorsweb' => 'H. Jansen, U. A. Th. Brinkman and R. W. Frei', 'title' => 'Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', 'journal' => 'Chromatographia', 'journal_id' => '0984', 'fadid' => 'CRGR1985V0020P00453', 'year' => '1985', 'volume' => '20', 'issue' => '8', 'startpage' => '453', 'endpage' => '460', 'type' => 'Journal Article', 'analytes' => ';0499;', 'matrices' => ';0400;', 'techniques' => ';0043;0252;', 'keywords' => ';0339;0349;0268;', 'abstract' => 'Two systems based on the cited concept are described; both give good results, their principal advantage being economy. One system comprises a stainless-steel tube (4 cm x 1 mm) packed with Aminex A-28 (9 µm; acetate form) for determination of N-methylcarbamate pesticides and the other a similar tube packed with urease immobilized on silica for determination of urea. The eluate from either reactor is mixed with phthalaldehyde (for fluorimetric detection) by use of a low-dead-volume T-piece. An online pre-column trace-enrichment procedure is described for determination of N-methylcarbamates in surface waters; limits of determination are at the low-ppb level.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2006-07-15 09:49:08', 'hits' => '4', 'urlcheck' => '2014-10-12 00:19:29', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00966', 'pauthor' => '!Frei, R.W.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1007/BF02344785', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', Chromatographia, 1985 20(8) 453-460', 'firstchar' => 'M', 'twochars' => 'Mi', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ) ) ) $c = array( 'id' => '006520', 'authors' => 'Kaufman, A.D.;Kissinger, P.T.;Jones, J.E.', 'authorsweb' => 'Arlen D. Kaufman, Peter T. Kissinger* and Jay E. Jones', 'title' => 'The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0356P00177', 'year' => '1997', 'volume' => '356', 'issue' => '2-3', 'startpage' => '177', 'endpage' => '186', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0054;', 'keywords' => ';0339;0323;0067;', 'abstract' => 'Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. The detection limit for phenylalanine was also decreased by two orders using the photo-catalytic reactor. ', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '4', 'urlcheck' => '2014-10-11 16:25:24', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => null, 'pauthor' => 'Kissinger, P.T.', 'address' => 'Department of Chemistry, Purdue University, 1393 H.C. Brown Laboratory West Lafayette, IN 47907 USA', 'email' => 'pete@bioanalytical.com', 'notes' => 'Fax: +1 (765) 4634527', 'url' => '10.1016/S0003-2670(97)00515-1', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', Anal. Chim. 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Abstract:
Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. The detection limit for phenylalanine was also decreased by two orders using the photo-catalytic reactor.
Post-column derivatization
Photochemistry
Catalysis
"Thermal-gradient Micro-bore Liquid Chromatography With Dual-wavelength Absorbance Detection"
Anal. Chem.
1991 Volume 63, Issue 6 Pages 568-574
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Kaufman, Peter T. Kissinger* and Jay E. Jones', 'title' => 'The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0356P00177', 'year' => '1997', 'volume' => '356', 'issue' => '2-3', 'startpage' => '177', 'endpage' => '186', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0054;', 'keywords' => ';0339;0323;0067;', 'abstract' => 'Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. 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Acta, 1997 356(2-3) 177-186', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 1 => array( 'id' => '008615', 'authors' => 'Renn, C.N.;Synovec, R.E.', 'authorsweb' => 'Curtiss N. Renn and Robert E. Synovec', 'title' => 'Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', 'journal' => 'Anal. Chem.', 'journal_id' => '0499', 'fadid' => 'ANCH1991V0063P00568', 'year' => '1991', 'volume' => '63', 'issue' => '6', 'startpage' => '568', 'endpage' => '574', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0493;', 'keywords' => ';0056;0086;0184;0188;0300;0381;', 'abstract' => 'A single fiber-optic two-wavelength detector is described for remote sensing in thermal-gradient microbore LC (TGMLC). Theoretical relationships are derived relating changes in the refractive index of the LC mobile phase to aperture-limited absorbance measurements. The use of the detector system was illustrated by the reversed-phase separation of unleaded gasoline on a C18 column, with a temperature gradient of 25°C to 150°C over 30 min, methanol - water as the mobile phase and detection at 230 and 295 nm. The detector reduced the baseline drift associated with thermally induced refractive index aberrations, not only for TGMLC but also for mobile-phase gradient LC and flow injection analysis. The advantages of the TGMLC technique are discussed.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '3', 'urlcheck' => '2014-10-11 18:36:18', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00371', 'pauthor' => '!Synovec, R.E.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1021/ac00006a005', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', Anal. Chem., 1991 63(6) 568-574', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 2 => array( 'id' => '011018', 'authors' => 'Celma, A.', 'authorsweb' => 'NA', 'title' => 'Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', 'journal' => 'Adv. Mass Spectrom.', 'journal_id' => '1525', 'fadid' => 'ADMS1998V0014P00001', 'year' => '1998', 'volume' => '14', 'issue' => '1', 'startpage' => '1', 'endpage' => '19', 'type' => 'Journal Article', 'analytes' => ';1749;', 'matrices' => 'NA', 'techniques' => ';0364;0043;', 'keywords' => ';0043;', 'abstract' => 'We shall describe a micro-HPLC-UV-Cf-LSIMS system that allows to work in several modes, i.e., flow injection analysis using a µinjector, capillary HPLC injecting µvolumes. and sample pre-concentration on the top of the column using a standard injector and gradient elution. All these arrangements were tested employing Lanreotide (D-β-Nal-Cys-Try-D-Trp-Lys-Val-Cys-Thr-NH2) as a model peptide.', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-03-29 09:48:49', 'hits' => '0', 'urlcheck' => '2007-03-29 09:48:50', 'urlcheckcode' => '', 'pauthor_id' => null, 'pauthor' => 'Celma, A.', 'address' => 'NA', 'email' => 'NA', 'notes' => 'NA SJC 101714 Book', 'url' => 'NA', 'urltype' => 'NA', 'gotpdf' => 'no', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', Adv. Mass Spectrom., 1998 14(1) 1-19', 'firstchar' => 'P', 'twochars' => 'Pe', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 3 => array( 'id' => '011445', 'authors' => 'Hara, T.;Tsukagoshi, K.;Kurita, Y.', 'authorsweb' => 'Tadashi Hara,Kazuhiko Tsukagoshi and Yuichiro Kurita', 'title' => 'Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', 'journal' => 'Bull. Chem. Soc. Jpn.', 'journal_id' => '0540', 'fadid' => 'BCSJ1989V0062P01501', 'year' => '1989', 'volume' => '62', 'issue' => '5', 'startpage' => '1501', 'endpage' => '1508', 'type' => 'Journal Article', 'analytes' => ';2008;1041;0092;', 'matrices' => ';0116;', 'techniques' => ';0043;0023;', 'keywords' => ';0302;0109;0054;', 'abstract' => 'The adsorption behavior of proteins (human serum albumin and γ-globulin) on molecular sieve 13X (100 to 120 mesh; pore diameter 10 .angstrom.) was examined by the depletion method in aqueous solution and by using a column, with detection at 280 nm in each instance. Globulin was adsorbed by the zeolite but albumin was not. Conditions were optimized for separating and determining the two proteins by a flow injection - chemiluminescence system (illustrated) with 1,10-phenanthroline - H2O2 - Cu(II) (Ibid., 1986, 59, 1833) as reagent. A detection limit of 1 ng, an analytical range of 0.02 to 5 mg L-1 and coefficient of variation of 5.4 and 8.3% (n = 5) at 1 mg L-1 were achieved for albumin and γ-globulin, respectively, by using a microbore column (25 cm x 1 mm) of NaX zeolite, 10 mM phosphate buffer of pH 6.4 to 6.5 as carrier solution, and 13.2 mM NaOH - 5 mM NaCl (pH 12.0) as eluent. The method was applied in analysis of serum.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-04-03 12:00:33', 'hits' => '5', 'urlcheck' => '2014-10-12 00:11:52', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01448', 'pauthor' => '!Hara, T.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1246/bcsj.62.1501', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', Bull. Chem. Soc. Jpn., 1989 62(5) 1501-1508', 'firstchar' => 'D', 'twochars' => 'De', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ), (int) 4 => array( 'id' => '011953', 'authors' => 'Jansen, H.;Brinkman, U.A.T.;Frei, R.W.', 'authorsweb' => 'H. Jansen, U. A. Th. Brinkman and R. W. Frei', 'title' => 'Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', 'journal' => 'Chromatographia', 'journal_id' => '0984', 'fadid' => 'CRGR1985V0020P00453', 'year' => '1985', 'volume' => '20', 'issue' => '8', 'startpage' => '453', 'endpage' => '460', 'type' => 'Journal Article', 'analytes' => ';0499;', 'matrices' => ';0400;', 'techniques' => ';0043;0252;', 'keywords' => ';0339;0349;0268;', 'abstract' => 'Two systems based on the cited concept are described; both give good results, their principal advantage being economy. One system comprises a stainless-steel tube (4 cm x 1 mm) packed with Aminex A-28 (9 µm; acetate form) for determination of N-methylcarbamate pesticides and the other a similar tube packed with urease immobilized on silica for determination of urea. The eluate from either reactor is mixed with phthalaldehyde (for fluorimetric detection) by use of a low-dead-volume T-piece. An online pre-column trace-enrichment procedure is described for determination of N-methylcarbamates in surface waters; limits of determination are at the low-ppb level.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2006-07-15 09:49:08', 'hits' => '4', 'urlcheck' => '2014-10-12 00:19:29', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00966', 'pauthor' => '!Frei, R.W.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1007/BF02344785', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', Chromatographia, 1985 20(8) 453-460', 'firstchar' => 'M', 'twochars' => 'Mi', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ) ) ) $c = array( 'id' => '008615', 'authors' => 'Renn, C.N.;Synovec, R.E.', 'authorsweb' => 'Curtiss N. 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The detector reduced the baseline drift associated with thermally induced refractive index aberrations, not only for TGMLC but also for mobile-phase gradient LC and flow injection analysis. The advantages of the TGMLC technique are discussed.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '3', 'urlcheck' => '2014-10-11 18:36:18', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00371', 'pauthor' => '!Synovec, R.E.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1021/ac00006a005', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', Anal. 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Abstract:
A single fiber-optic two-wavelength detector is described for remote sensing in thermal-gradient microbore LC (TGMLC). Theoretical relationships are derived relating changes in the refractive index of the LC mobile phase to aperture-limited absorbance measurements. The use of the detector system was illustrated by the reversed-phase separation of unleaded gasoline on a C18 column, with a temperature gradient of 25°C to 150°C over 30 min, methanol - water as the mobile phase and detection at 230 and 295 nm. The detector reduced the baseline drift associated with thermally induced refractive index aberrations, not only for TGMLC but also for mobile-phase gradient LC and flow injection analysis. The advantages of the TGMLC technique are discussed.
C18
Column
Gradient technique
Heated reaction
Optical fiber
Refractive index
"Peptide Analysis By Capillary Liquid Chromatography-continuous-flow Liquid Secondary Ion Mass Spectrometry"
Adv. Mass Spectrom.
1998 Volume 14, Issue 1 Pages 1-19
Notice (8): Undefined variable: uid [APP/View/Elements/citation.ctp, line 40]Celma, A.Code Context?><?phpif($uid!='') {$viewFile = '/home/stuchalk/public_html/fad/app/View/Elements/citation.ctp' $dataForView = array( 'data' => array( 'Technique' => array( 'id' => '0043', 'label' => 'LC', 'level1' => 'Chromatography', 'level2' => 'liquid', 'level3' => 'microbore', 'level4' => '', 'level5' => '', 'synonyms' => '', 'champ' => '', 'total' => '5', 'updated' => '0000-00-00 00:00:00', 'name' => 'Chromatography, liquid, microbore', 'nametotal' => 'Chromatography, liquid, microbore**5', 'first' => 'C' ), 'Citation' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ), (int) 2 => array( [maximum depth reached] ), (int) 3 => array( [maximum depth reached] ), (int) 4 => array( [maximum depth reached] ) ) ), 'c' => array( 'id' => '011018', 'authors' => 'Celma, A.', 'authorsweb' => 'NA', 'title' => 'Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', 'journal' => 'Adv. 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Jones', 'title' => 'The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0356P00177', 'year' => '1997', 'volume' => '356', 'issue' => '2-3', 'startpage' => '177', 'endpage' => '186', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0054;', 'keywords' => ';0339;0323;0067;', 'abstract' => 'Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. 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Mass Spectrom.', 'journal_id' => '1525', 'fadid' => 'ADMS1998V0014P00001', 'year' => '1998', 'volume' => '14', 'issue' => '1', 'startpage' => '1', 'endpage' => '19', 'type' => 'Journal Article', 'analytes' => ';1749;', 'matrices' => 'NA', 'techniques' => ';0364;0043;', 'keywords' => ';0043;', 'abstract' => 'We shall describe a micro-HPLC-UV-Cf-LSIMS system that allows to work in several modes, i.e., flow injection analysis using a µinjector, capillary HPLC injecting µvolumes. and sample pre-concentration on the top of the column using a standard injector and gradient elution. All these arrangements were tested employing Lanreotide (D-β-Nal-Cys-Try-D-Trp-Lys-Val-Cys-Thr-NH2) as a model peptide.', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-03-29 09:48:49', 'hits' => '0', 'urlcheck' => '2007-03-29 09:48:50', 'urlcheckcode' => '', 'pauthor_id' => null, 'pauthor' => 'Celma, A.', 'address' => 'NA', 'email' => 'NA', 'notes' => 'NA SJC 101714 Book', 'url' => 'NA', 'urltype' => 'NA', 'gotpdf' => 'no', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', Adv. Mass Spectrom., 1998 14(1) 1-19', 'firstchar' => 'P', 'twochars' => 'Pe', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 3 => array( 'id' => '011445', 'authors' => 'Hara, T.;Tsukagoshi, K.;Kurita, Y.', 'authorsweb' => 'Tadashi Hara,Kazuhiko Tsukagoshi and Yuichiro Kurita', 'title' => 'Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', 'journal' => 'Bull. Chem. Soc. Jpn.', 'journal_id' => '0540', 'fadid' => 'BCSJ1989V0062P01501', 'year' => '1989', 'volume' => '62', 'issue' => '5', 'startpage' => '1501', 'endpage' => '1508', 'type' => 'Journal Article', 'analytes' => ';2008;1041;0092;', 'matrices' => ';0116;', 'techniques' => ';0043;0023;', 'keywords' => ';0302;0109;0054;', 'abstract' => 'The adsorption behavior of proteins (human serum albumin and γ-globulin) on molecular sieve 13X (100 to 120 mesh; pore diameter 10 .angstrom.) was examined by the depletion method in aqueous solution and by using a column, with detection at 280 nm in each instance. Globulin was adsorbed by the zeolite but albumin was not. Conditions were optimized for separating and determining the two proteins by a flow injection - chemiluminescence system (illustrated) with 1,10-phenanthroline - H2O2 - Cu(II) (Ibid., 1986, 59, 1833) as reagent. A detection limit of 1 ng, an analytical range of 0.02 to 5 mg L-1 and coefficient of variation of 5.4 and 8.3% (n = 5) at 1 mg L-1 were achieved for albumin and γ-globulin, respectively, by using a microbore column (25 cm x 1 mm) of NaX zeolite, 10 mM phosphate buffer of pH 6.4 to 6.5 as carrier solution, and 13.2 mM NaOH - 5 mM NaCl (pH 12.0) as eluent. The method was applied in analysis of serum.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-04-03 12:00:33', 'hits' => '5', 'urlcheck' => '2014-10-12 00:11:52', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01448', 'pauthor' => '!Hara, T.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1246/bcsj.62.1501', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', Bull. Chem. Soc. Jpn., 1989 62(5) 1501-1508', 'firstchar' => 'D', 'twochars' => 'De', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ), (int) 4 => array( 'id' => '011953', 'authors' => 'Jansen, H.;Brinkman, U.A.T.;Frei, R.W.', 'authorsweb' => 'H. Jansen, U. A. Th. Brinkman and R. W. Frei', 'title' => 'Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', 'journal' => 'Chromatographia', 'journal_id' => '0984', 'fadid' => 'CRGR1985V0020P00453', 'year' => '1985', 'volume' => '20', 'issue' => '8', 'startpage' => '453', 'endpage' => '460', 'type' => 'Journal Article', 'analytes' => ';0499;', 'matrices' => ';0400;', 'techniques' => ';0043;0252;', 'keywords' => ';0339;0349;0268;', 'abstract' => 'Two systems based on the cited concept are described; both give good results, their principal advantage being economy. One system comprises a stainless-steel tube (4 cm x 1 mm) packed with Aminex A-28 (9 µm; acetate form) for determination of N-methylcarbamate pesticides and the other a similar tube packed with urease immobilized on silica for determination of urea. The eluate from either reactor is mixed with phthalaldehyde (for fluorimetric detection) by use of a low-dead-volume T-piece. An online pre-column trace-enrichment procedure is described for determination of N-methylcarbamates in surface waters; limits of determination are at the low-ppb level.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2006-07-15 09:49:08', 'hits' => '4', 'urlcheck' => '2014-10-12 00:19:29', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00966', 'pauthor' => '!Frei, R.W.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1007/BF02344785', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', Chromatographia, 1985 20(8) 453-460', 'firstchar' => 'M', 'twochars' => 'Mi', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ) ) ) $c = array( 'id' => '011018', 'authors' => 'Celma, A.', 'authorsweb' => 'NA', 'title' => 'Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', 'journal' => 'Adv. Mass Spectrom.', 'journal_id' => '1525', 'fadid' => 'ADMS1998V0014P00001', 'year' => '1998', 'volume' => '14', 'issue' => '1', 'startpage' => '1', 'endpage' => '19', 'type' => 'Journal Article', 'analytes' => ';1749;', 'matrices' => 'NA', 'techniques' => ';0364;0043;', 'keywords' => ';0043;', 'abstract' => 'We shall describe a micro-HPLC-UV-Cf-LSIMS system that allows to work in several modes, i.e., flow injection analysis using a µinjector, capillary HPLC injecting µvolumes. and sample pre-concentration on the top of the column using a standard injector and gradient elution. All these arrangements were tested employing Lanreotide (D-β-Nal-Cys-Try-D-Trp-Lys-Val-Cys-Thr-NH2) as a model peptide.', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-03-29 09:48:49', 'hits' => '0', 'urlcheck' => '2007-03-29 09:48:50', 'urlcheckcode' => '', 'pauthor_id' => null, 'pauthor' => 'Celma, A.', 'address' => 'NA', 'email' => 'NA', 'notes' => 'NA SJC 101714 Book', 'url' => 'NA', 'urltype' => 'NA', 'gotpdf' => 'no', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', Adv. Mass Spectrom., 1998 14(1) 1-19', 'firstchar' => 'P', 'twochars' => 'Pe', 'CitationsTechnique' => array( 'id' => '010556', 'citation_id' => '011018', 'technique_id' => '0043' ), 'Analyte' => array( (int) 0 => array( 'id' => '01749', 'name' => 'Lanreotide', 'iupac_name' => '10-(4-aminobutyl)-N-(1-amino-3-hydroxy-1-oxobutan-2-yl)-19-[(2-amino-3-naphthalen-2-ylpropanoyl)amino]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-7-propan-2-yl-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carboxamide', 'casrn' => '108736-35-2', 'synonyms' => 'Lanreotide, Somatulin, Autogel, Lanreotide Autogel, BIM 23014, DC 13-116, Lanreotidum [INN-Latin], Lanreotida [INN-Spanish], Nal-cyclo(cys-tyr-trp-lys-val-cys)-thr-NH2, Somatuline, 108736-35-2, L-Threoninamide, 3-(2-naphthalenyl)-D-alanyl-L-cysteinyl-L-tyrosyl-D-tryptophyl-L-lysyl-L-valyl-L-cysteinyl-, cyclic (2-7)-disulfide, Bim-23014, Ipstyl, 10-(4-aminobutyl)-N-(1-amino-3-hydroxy-1-oxobutan-2-yl)-19-[(2-amino-3-naphthalen-2-ylpropanoyl)amino]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-7-propan-2-yl-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carboxamide, Lanreotida, Lanreotidum, Somatulinereg, Somatulin-Autogel, Lanreotide [INN:BAN], AC1L2FZT, SCHEMBL34091, N9642_SIGMA, UNII-0G3DE8943Y, GTPL2031, SCHEMBL14802383, CTK8G7572, C54H69N11O10S2, 127984-74-1 (acetate salt), DAP001488, NCGC00181321-01, 118992-92-0, AN-33681, L-Threoninamide, 3-(1-naphthalenyl)-D-alanyl-L-cysteinyl-L-tyrosyl-D-tryptophyl-L-lysyl-L-valyl-L-cysteinyl-, cyclic (2-7)-disulfide, LS-153748, LS-172394, 127984-74-1, 33928-EP2272827A1, 33928-EP2275420A1, 33928-EP2295055A2, 33928-EP2295416A2, 33928-EP2295426A1, 33928-EP2295427A1, 33928-EP2298748A2, 33928-EP2298764A1, 33928-EP2298765A1, 33928-EP2305642A2, 33928-EP2311453A1, 33928-EP2311808A1, 33928-EP2311829A1, L000343, β-(2-Naphthyl)-D-Ala-Cys-Tyr-D-Trp-Lys-Val-Cys-Thr amide [Disulfide Bridge: 2-7, 10-(4-AMINOBUTYL)-19-[(2-AMINO-3-NAPHTHALEN-2-YL-PROPANOYL)AMINO]-N-(1-CARBAMOYL-2-HYDROXY-PROPYL)-16-[(4-HYDROXYPHENYL)METHYL]-13-(1H-INDOL-3-YLMETHYL)-6,9,12,15,18-PENTAOXO-7-PROPAN-2-YL-1,2-DITHIA-5,8,11,14,17-PENTAZACYCLOICOSANE-4-CARBOXAMIDE, 10-(4-aminobutyl)-19-[[2-amino-3-(2-naphthyl)propanoyl]amino]-N-(1-carbamoyl-2-hydroxy-propyl)-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-7-isopropyl-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carboxamide, 10-(4-aminobutyl)-N-(1-amino-3-hydroxy-1-oxobutan-2-yl)-19-[[2-amino-3-(2-naphthalenyl)-1-oxopropyl]amino]-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-7-propan-2-yl-1,2, 123369-01-7', 'total' => '1', 'inchi' => 'InChI=1S/C54H69N11O10S2/c1-29(2)45-54(75)63-44(53(74)65-46(30(3)66)47(57)68)28-77-76-27-43(62-48(69)38(56)23-32-15-18-33-10-4-5-11-34(33)22-32)52(73)60-41(24-31-16-19-36(67)20-17-31)50(71)61-42(25-35-26-58-39-13-7-6-12-37(35)39)51(72)59-40(49(70)64-45)14-8-9-21-55/h4-7,10-13,15-20,22,26,29-30,38,40-46,58,66-67H,8-9,14,21,23-25,27-28,55-56H2,1-3H3,(H2,57,68)(H,59,72)(H,60,73)(H,61,71)(H,62,69)(H,63,75)(H,64,70)(H,65,74)', 'inchikey' => 'PUDHBTGHUJUUFI-UHFFFAOYSA-N', 'formula' => 'C54H69N11O10S2', 'oxstate' => 'Zero', 'url' => '', 'charge' => '0', 'class1' => '', 'class2' => '', 'class3' => '', 'class4' => '', 'class5' => '', 'isgroup' => 'no', 'checked' => 'no', 'citation_count' => '0', 'updated' => '2015-12-11 16:21:31', 'first' => 'L', 'nametotal' => 'Lanreotide**1', 'AnalytesCitation' => array( [maximum depth reached] ) ) ), 'Matrix' => array(), 'Keyword' => array( (int) 0 => array( 'id' => '0043', 'type' => 'Manifold component', 'keyword' => 'Apparatus', 'newKeyword' => '', 'synonyms' => '', 'fao' => '', 'total' => '466', 'first' => 'A', 'keytotal' => 'Apparatus**466', 'CitationsKeyword' => array( [maximum depth reached] ) ) ) ) $i = (int) 2 $path = '' $a = '' $url = 'http://NA' $aus = 'Celma, A.'include - APP/View/Elements/citation.ctp, line 40 View::_evaluate() - CORE/Cake/View/View.php, line 971 View::_render() - CORE/Cake/View/View.php, line 933 View::_renderElement() - CORE/Cake/View/View.php, line 1224 View::element() - CORE/Cake/View/View.php, line 418 include - APP/View/Techniques/view.ctp, line 52 View::_evaluate() - CORE/Cake/View/View.php, line 971 View::_render() - CORE/Cake/View/View.php, line 933 View::render() - CORE/Cake/View/View.php, line 473 Controller::render() - CORE/Cake/Controller/Controller.php, line 968 Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 200 Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167 [main] - APP/webroot/index.php, line 109
Abstract:
We shall describe a micro-HPLC-UV-Cf-LSIMS system that allows to work in several modes, i.e., flow injection analysis using a µinjector, capillary HPLC injecting µvolumes. and sample pre-concentration on the top of the column using a standard injector and gradient elution. All these arrangements were tested employing Lanreotide (D-β-Nal-Cys-Try-D-Trp-Lys-Val-Cys-Thr-NH2) as a model peptide.
Lanreotide
Apparatus
"Determination Of A Small Amount Of A Biological Constituent By The Use Of Chemiluminescence. 15. Zeolite Column - Chemiluminescence Detection System For The Separation And The Determination Of A Protein Mixture"
Bull. Chem. Soc. Jpn.
1989 Volume 62, Issue 5 Pages 1501-1508
Notice (8): Undefined variable: uid [APP/View/Elements/citation.ctp, line 40]Tadashi Hara,Kazuhiko Tsukagoshi and Yuichiro KuritaCode Context?><?phpif($uid!='') {$viewFile = '/home/stuchalk/public_html/fad/app/View/Elements/citation.ctp' $dataForView = array( 'data' => array( 'Technique' => array( 'id' => '0043', 'label' => 'LC', 'level1' => 'Chromatography', 'level2' => 'liquid', 'level3' => 'microbore', 'level4' => '', 'level5' => '', 'synonyms' => '', 'champ' => '', 'total' => '5', 'updated' => '0000-00-00 00:00:00', 'name' => 'Chromatography, liquid, microbore', 'nametotal' => 'Chromatography, liquid, microbore**5', 'first' => 'C' ), 'Citation' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ), (int) 2 => array( [maximum depth reached] ), (int) 3 => array( [maximum depth reached] ), (int) 4 => array( [maximum depth reached] ) ) ), 'c' => array( 'id' => '011445', 'authors' => 'Hara, T.;Tsukagoshi, K.;Kurita, Y.', 'authorsweb' => 'Tadashi Hara,Kazuhiko Tsukagoshi and Yuichiro Kurita', 'title' => 'Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', 'journal' => 'Bull. Chem. Soc. Jpn.', 'journal_id' => '0540', 'fadid' => 'BCSJ1989V0062P01501', 'year' => '1989', 'volume' => '62', 'issue' => '5', 'startpage' => '1501', 'endpage' => '1508', 'type' => 'Journal Article', 'analytes' => ';2008;1041;0092;', 'matrices' => ';0116;', 'techniques' => ';0043;0023;', 'keywords' => ';0302;0109;0054;', 'abstract' => 'The adsorption behavior of proteins (human serum albumin and γ-globulin) on molecular sieve 13X (100 to 120 mesh; pore diameter 10 .angstrom.) was examined by the depletion method in aqueous solution and by using a column, with detection at 280 nm in each instance. Globulin was adsorbed by the zeolite but albumin was not. Conditions were optimized for separating and determining the two proteins by a flow injection - chemiluminescence system (illustrated) with 1,10-phenanthroline - H2O2 - Cu(II) (Ibid., 1986, 59, 1833) as reagent. A detection limit of 1 ng, an analytical range of 0.02 to 5 mg L-1 and coefficient of variation of 5.4 and 8.3% (n = 5) at 1 mg L-1 were achieved for albumin and γ-globulin, respectively, by using a microbore column (25 cm x 1 mm) of NaX zeolite, 10 mM phosphate buffer of pH 6.4 to 6.5 as carrier solution, and 13.2 mM NaOH - 5 mM NaCl (pH 12.0) as eluent. The method was applied in analysis of serum.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-04-03 12:00:33', 'hits' => '5', 'urlcheck' => '2014-10-12 00:11:52', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01448', 'pauthor' => '!Hara, T.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1246/bcsj.62.1501', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', Bull. Chem. Soc. Jpn., 1989 62(5) 1501-1508', 'firstchar' => 'D', 'twochars' => 'De', 'CitationsTechnique' => array( 'id' => '011216', 'citation_id' => '011445', 'technique_id' => '0043' ), 'Analyte' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ), (int) 2 => array( [maximum depth reached] ) ), 'Matrix' => array( (int) 0 => array( [maximum depth reached] ) ), 'Keyword' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ), (int) 2 => array( [maximum depth reached] ) ) ), 'i' => (int) 3 ) $data = array( 'Technique' => array( 'id' => '0043', 'label' => 'LC', 'level1' => 'Chromatography', 'level2' => 'liquid', 'level3' => 'microbore', 'level4' => '', 'level5' => '', 'synonyms' => '', 'champ' => '', 'total' => '5', 'updated' => '0000-00-00 00:00:00', 'name' => 'Chromatography, liquid, microbore', 'nametotal' => 'Chromatography, liquid, microbore**5', 'first' => 'C' ), 'Citation' => array( (int) 0 => array( 'id' => '006520', 'authors' => 'Kaufman, A.D.;Kissinger, P.T.;Jones, J.E.', 'authorsweb' => 'Arlen D. Kaufman, Peter T. Kissinger* and Jay E. Jones', 'title' => 'The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0356P00177', 'year' => '1997', 'volume' => '356', 'issue' => '2-3', 'startpage' => '177', 'endpage' => '186', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0054;', 'keywords' => ';0339;0323;0067;', 'abstract' => 'Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. The detection limit for phenylalanine was also decreased by two orders using the photo-catalytic reactor. ', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '4', 'urlcheck' => '2014-10-11 16:25:24', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => null, 'pauthor' => 'Kissinger, P.T.', 'address' => 'Department of Chemistry, Purdue University, 1393 H.C. Brown Laboratory West Lafayette, IN 47907 USA', 'email' => 'pete@bioanalytical.com', 'notes' => 'Fax: +1 (765) 4634527', 'url' => '10.1016/S0003-2670(97)00515-1', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', Anal. Chim. Acta, 1997 356(2-3) 177-186', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 1 => array( 'id' => '008615', 'authors' => 'Renn, C.N.;Synovec, R.E.', 'authorsweb' => 'Curtiss N. Renn and Robert E. Synovec', 'title' => 'Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', 'journal' => 'Anal. Chem.', 'journal_id' => '0499', 'fadid' => 'ANCH1991V0063P00568', 'year' => '1991', 'volume' => '63', 'issue' => '6', 'startpage' => '568', 'endpage' => '574', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0493;', 'keywords' => ';0056;0086;0184;0188;0300;0381;', 'abstract' => 'A single fiber-optic two-wavelength detector is described for remote sensing in thermal-gradient microbore LC (TGMLC). Theoretical relationships are derived relating changes in the refractive index of the LC mobile phase to aperture-limited absorbance measurements. The use of the detector system was illustrated by the reversed-phase separation of unleaded gasoline on a C18 column, with a temperature gradient of 25°C to 150°C over 30 min, methanol - water as the mobile phase and detection at 230 and 295 nm. The detector reduced the baseline drift associated with thermally induced refractive index aberrations, not only for TGMLC but also for mobile-phase gradient LC and flow injection analysis. The advantages of the TGMLC technique are discussed.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '3', 'urlcheck' => '2014-10-11 18:36:18', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00371', 'pauthor' => '!Synovec, R.E.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1021/ac00006a005', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', Anal. Chem., 1991 63(6) 568-574', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 2 => array( 'id' => '011018', 'authors' => 'Celma, A.', 'authorsweb' => 'NA', 'title' => 'Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', 'journal' => 'Adv. Mass Spectrom.', 'journal_id' => '1525', 'fadid' => 'ADMS1998V0014P00001', 'year' => '1998', 'volume' => '14', 'issue' => '1', 'startpage' => '1', 'endpage' => '19', 'type' => 'Journal Article', 'analytes' => ';1749;', 'matrices' => 'NA', 'techniques' => ';0364;0043;', 'keywords' => ';0043;', 'abstract' => 'We shall describe a micro-HPLC-UV-Cf-LSIMS system that allows to work in several modes, i.e., flow injection analysis using a µinjector, capillary HPLC injecting µvolumes. and sample pre-concentration on the top of the column using a standard injector and gradient elution. 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Abstract:
The adsorption behavior of proteins (human serum albumin and γ-globulin) on molecular sieve 13X (100 to 120 mesh; pore diameter 10 .angstrom.) was examined by the depletion method in aqueous solution and by using a column, with detection at 280 nm in each instance. Globulin was adsorbed by the zeolite but albumin was not. Conditions were optimized for separating and determining the two proteins by a flow injection - chemiluminescence system (illustrated) with 1,10-phenanthroline - H2O2 - Cu(II) (Ibid., 1986, 59, 1833) as reagent. A detection limit of 1 ng, an analytical range of 0.02 to 5 mg L-1 and coefficient of variation of 5.4 and 8.3% (n = 5) at 1 mg L-1 were achieved for albumin and γ-globulin, respectively, by using a microbore column (25 cm x 1 mm) of NaX zeolite, 10 mM phosphate buffer of pH 6.4 to 6.5 as carrier solution, and 13.2 mM NaOH - 5 mM NaCl (pH 12.0) as eluent. The method was applied in analysis of serum.
Proteins
γ-Globulin
Albumin
Blood Serum
Optimization
Detection limit
Buffer
"Miniaturization Of Solid-phase Reactors For Online Post-column Derivatization In Narrow-bore Liquid Chromatography"
Chromatographia
1985 Volume 20, Issue 8 Pages 453-460
Notice (8): Undefined variable: uid [APP/View/Elements/citation.ctp, line 40]H. Jansen, U. A. Th. Brinkman and R. W. FreiCode Context?><?phpif($uid!='') {$viewFile = '/home/stuchalk/public_html/fad/app/View/Elements/citation.ctp' $dataForView = array( 'data' => array( 'Technique' => array( 'id' => '0043', 'label' => 'LC', 'level1' => 'Chromatography', 'level2' => 'liquid', 'level3' => 'microbore', 'level4' => '', 'level5' => '', 'synonyms' => '', 'champ' => '', 'total' => '5', 'updated' => '0000-00-00 00:00:00', 'name' => 'Chromatography, liquid, microbore', 'nametotal' => 'Chromatography, liquid, microbore**5', 'first' => 'C' ), 'Citation' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ), (int) 2 => array( [maximum depth reached] ), (int) 3 => array( [maximum depth reached] ), (int) 4 => array( [maximum depth reached] ) ) ), 'c' => array( 'id' => '011953', 'authors' => 'Jansen, H.;Brinkman, U.A.T.;Frei, R.W.', 'authorsweb' => 'H. 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The eluate from either reactor is mixed with phthalaldehyde (for fluorimetric detection) by use of a low-dead-volume T-piece. 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Kaufman, Peter T. Kissinger* and Jay E. Jones', 'title' => 'The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0356P00177', 'year' => '1997', 'volume' => '356', 'issue' => '2-3', 'startpage' => '177', 'endpage' => '186', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0054;', 'keywords' => ';0339;0323;0067;', 'abstract' => 'Titanium dioxide was used as a photocatalyst to improve the yield and rate of product formation in a post-column derivatization reactor for microbore liquid chromatography. The photo-catalytic reactor demonstrated an increase in sensitivity of greater than one order of magnitude for the electrochemical detection of phenylalanine compared to the more typical open-tubular photolysis reactor. The detection limit for phenylalanine was also decreased by two orders using the photo-catalytic reactor. ', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '4', 'urlcheck' => '2014-10-11 16:25:24', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => null, 'pauthor' => 'Kissinger, P.T.', 'address' => 'Department of Chemistry, Purdue University, 1393 H.C. Brown Laboratory West Lafayette, IN 47907 USA', 'email' => 'pete@bioanalytical.com', 'notes' => 'Fax: +1 (765) 4634527', 'url' => '10.1016/S0003-2670(97)00515-1', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''The use of titanium dioxide as a photo-catalyst to improve the sensitivity of post-column photolysis-electrochemical detection for microbore liquid chromatography', Anal. Chim. Acta, 1997 356(2-3) 177-186', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 1 => array( 'id' => '008615', 'authors' => 'Renn, C.N.;Synovec, R.E.', 'authorsweb' => 'Curtiss N. Renn and Robert E. Synovec', 'title' => 'Thermal-gradient micro-bore liquid chromatography with dual-wavelength absorbance detection', 'journal' => 'Anal. Chem.', 'journal_id' => '0499', 'fadid' => 'ANCH1991V0063P00568', 'year' => '1991', 'volume' => '63', 'issue' => '6', 'startpage' => '568', 'endpage' => '574', 'type' => 'Journal Article', 'analytes' => '', 'matrices' => '', 'techniques' => ';0043;0493;', 'keywords' => ';0056;0086;0184;0188;0300;0381;', 'abstract' => 'A single fiber-optic two-wavelength detector is described for remote sensing in thermal-gradient microbore LC (TGMLC). 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Chem., 1991 63(6) 568-574', 'firstchar' => 'T', 'twochars' => 'Th', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array([maximum depth reached]), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 2 => array( 'id' => '011018', 'authors' => 'Celma, A.', 'authorsweb' => 'NA', 'title' => 'Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', 'journal' => 'Adv. 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All these arrangements were tested employing Lanreotide (D-β-Nal-Cys-Try-D-Trp-Lys-Val-Cys-Thr-NH2) as a model peptide.', 'language' => 'English', 'updated' => '2020-12-28 11:11:09', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-03-29 09:48:49', 'hits' => '0', 'urlcheck' => '2007-03-29 09:48:50', 'urlcheckcode' => '', 'pauthor_id' => null, 'pauthor' => 'Celma, A.', 'address' => 'NA', 'email' => 'NA', 'notes' => 'NA SJC 101714 Book', 'url' => 'NA', 'urltype' => 'NA', 'gotpdf' => 'no', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Peptide analysis by capillary liquid chromatography-continuous-flow liquid secondary ion mass spectrometry', Adv. Mass Spectrom., 1998 14(1) 1-19', 'firstchar' => 'P', 'twochars' => 'Pe', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 3 => array( 'id' => '011445', 'authors' => 'Hara, T.;Tsukagoshi, K.;Kurita, Y.', 'authorsweb' => 'Tadashi Hara,Kazuhiko Tsukagoshi and Yuichiro Kurita', 'title' => 'Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', 'journal' => 'Bull. Chem. Soc. Jpn.', 'journal_id' => '0540', 'fadid' => 'BCSJ1989V0062P01501', 'year' => '1989', 'volume' => '62', 'issue' => '5', 'startpage' => '1501', 'endpage' => '1508', 'type' => 'Journal Article', 'analytes' => ';2008;1041;0092;', 'matrices' => ';0116;', 'techniques' => ';0043;0023;', 'keywords' => ';0302;0109;0054;', 'abstract' => 'The adsorption behavior of proteins (human serum albumin and γ-globulin) on molecular sieve 13X (100 to 120 mesh; pore diameter 10 .angstrom.) was examined by the depletion method in aqueous solution and by using a column, with detection at 280 nm in each instance. Globulin was adsorbed by the zeolite but albumin was not. Conditions were optimized for separating and determining the two proteins by a flow injection - chemiluminescence system (illustrated) with 1,10-phenanthroline - H2O2 - Cu(II) (Ibid., 1986, 59, 1833) as reagent. A detection limit of 1 ng, an analytical range of 0.02 to 5 mg L-1 and coefficient of variation of 5.4 and 8.3% (n = 5) at 1 mg L-1 were achieved for albumin and γ-globulin, respectively, by using a microbore column (25 cm x 1 mm) of NaX zeolite, 10 mM phosphate buffer of pH 6.4 to 6.5 as carrier solution, and 13.2 mM NaOH - 5 mM NaCl (pH 12.0) as eluent. The method was applied in analysis of serum.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2007-04-03 12:00:33', 'hits' => '5', 'urlcheck' => '2014-10-12 00:11:52', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01448', 'pauthor' => '!Hara, T.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1246/bcsj.62.1501', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Determination of a small amount of a biological constituent by the use of chemiluminescence. 15. Zeolite column - chemiluminescence detection system for the separation and the determination of a protein mixture', Bull. Chem. Soc. Jpn., 1989 62(5) 1501-1508', 'firstchar' => 'D', 'twochars' => 'De', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ), (int) 4 => array( 'id' => '011953', 'authors' => 'Jansen, H.;Brinkman, U.A.T.;Frei, R.W.', 'authorsweb' => 'H. Jansen, U. A. Th. Brinkman and R. W. Frei', 'title' => 'Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', 'journal' => 'Chromatographia', 'journal_id' => '0984', 'fadid' => 'CRGR1985V0020P00453', 'year' => '1985', 'volume' => '20', 'issue' => '8', 'startpage' => '453', 'endpage' => '460', 'type' => 'Journal Article', 'analytes' => ';0499;', 'matrices' => ';0400;', 'techniques' => ';0043;0252;', 'keywords' => ';0339;0349;0268;', 'abstract' => 'Two systems based on the cited concept are described; both give good results, their principal advantage being economy. One system comprises a stainless-steel tube (4 cm x 1 mm) packed with Aminex A-28 (9 µm; acetate form) for determination of N-methylcarbamate pesticides and the other a similar tube packed with urease immobilized on silica for determination of urea. The eluate from either reactor is mixed with phthalaldehyde (for fluorimetric detection) by use of a low-dead-volume T-piece. An online pre-column trace-enrichment procedure is described for determination of N-methylcarbamates in surface waters; limits of determination are at the low-ppb level.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2006-07-15 09:49:08', 'hits' => '4', 'urlcheck' => '2014-10-12 00:19:29', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00966', 'pauthor' => '!Frei, R.W.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1007/BF02344785', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', Chromatographia, 1985 20(8) 453-460', 'firstchar' => 'M', 'twochars' => 'Mi', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ) ) ) $c = array( 'id' => '011953', 'authors' => 'Jansen, H.;Brinkman, U.A.T.;Frei, R.W.', 'authorsweb' => 'H. Jansen, U. A. Th. Brinkman and R. W. Frei', 'title' => 'Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', 'journal' => 'Chromatographia', 'journal_id' => '0984', 'fadid' => 'CRGR1985V0020P00453', 'year' => '1985', 'volume' => '20', 'issue' => '8', 'startpage' => '453', 'endpage' => '460', 'type' => 'Journal Article', 'analytes' => ';0499;', 'matrices' => ';0400;', 'techniques' => ';0043;0252;', 'keywords' => ';0339;0349;0268;', 'abstract' => 'Two systems based on the cited concept are described; both give good results, their principal advantage being economy. One system comprises a stainless-steel tube (4 cm x 1 mm) packed with Aminex A-28 (9 µm; acetate form) for determination of N-methylcarbamate pesticides and the other a similar tube packed with urease immobilized on silica for determination of urea. The eluate from either reactor is mixed with phthalaldehyde (for fluorimetric detection) by use of a low-dead-volume T-piece. An online pre-column trace-enrichment procedure is described for determination of N-methylcarbamates in surface waters; limits of determination are at the low-ppb level.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '2006-07-15 09:49:08', 'hits' => '4', 'urlcheck' => '2014-10-12 00:19:29', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00966', 'pauthor' => '!Frei, R.W.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1007/BF02344785', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Miniaturization of solid-phase reactors for online post-column derivatization in narrow-bore liquid chromatography', Chromatographia, 1985 20(8) 453-460', 'firstchar' => 'M', 'twochars' => 'Mi', 'CitationsTechnique' => array( 'id' => '011871', 'citation_id' => '011953', 'technique_id' => '0043' ), 'Analyte' => array( (int) 0 => array( 'id' => '00499', 'name' => 'Carbamates, N-methyl', 'iupac_name' => '', 'casrn' => '', 'synonyms' => '', 'total' => '10', 'inchi' => '', 'inchikey' => '', 'formula' => '', 'oxstate' => null, 'url' => '', 'charge' => null, 'class1' => '', 'class2' => '', 'class3' => '', 'class4' => '', 'class5' => '', 'isgroup' => 'no', 'checked' => 'no', 'citation_count' => '0', 'updated' => '2015-12-11 09:53:17', 'first' => 'C', 'nametotal' => 'Carbamates, N-methyl**10', 'AnalytesCitation' => array( [maximum depth reached] ) ) ), 'Matrix' => array( (int) 0 => array( 'id' => '0400', 'label' => 'Surface ', 'level1' => 'Environmental', 'level2' => 'water', 'level3' => 'surface', 'level4' => '', 'level5' => '', 'synonyms' => '', 'total' => '46', 'url' => '', 'updated' => '2015-12-08 19:41:10', 'name' => 'Environmental, water, surface', 'nametotal' => 'Environmental, water, surface**46', 'first' => 'E', 'CitationsMatrix' => array( [maximum depth reached] ) ) ), 'Keyword' => array( (int) 0 => array( 'id' => '0339', 'type' => 'Manifold process', 'keyword' => 'Post-column derivatization', 'newKeyword' => '', 'synonyms' => '', 'fao' => '', 'total' => '646', 'first' => 'P', 'keytotal' => 'Post-column derivatization**646', 'CitationsKeyword' => array( [maximum depth reached] ) ), (int) 1 => array( 'id' => '0349', 'type' => 'Manifold process', 'keyword' => 'Preconcentration', 'newKeyword' => '', 'synonyms' => '', 'fao' => '', 'total' => '773', 'first' => 'P', 'keytotal' => 'Preconcentration**773', 'CitationsKeyword' => array( [maximum depth reached] ) ), (int) 2 => array( 'id' => '0268', 'type' => 'Feature', 'keyword' => 'Miniaturization', 'newKeyword' => '', 'synonyms' => '', 'fao' => '', 'total' => '39', 'first' => 'M', 'keytotal' => 'Miniaturization**39', 'CitationsKeyword' => array( [maximum depth reached] ) ) ) ) $i = (int) 4 $path = '' $a = '' $url = 'http://dx.doi.org/10.1007/BF02344785' $aus = 'H. Jansen, U. A. Th. Brinkman and R. W. Frei'include - APP/View/Elements/citation.ctp, line 40 View::_evaluate() - CORE/Cake/View/View.php, line 971 View::_render() - CORE/Cake/View/View.php, line 933 View::_renderElement() - CORE/Cake/View/View.php, line 1224 View::element() - CORE/Cake/View/View.php, line 418 include - APP/View/Techniques/view.ctp, line 52 View::_evaluate() - CORE/Cake/View/View.php, line 971 View::_render() - CORE/Cake/View/View.php, line 933 View::render() - CORE/Cake/View/View.php, line 473 Controller::render() - CORE/Cake/Controller/Controller.php, line 968 Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 200 Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167 [main] - APP/webroot/index.php, line 109
Abstract:
Two systems based on the cited concept are described; both give good results, their principal advantage being economy. One system comprises a stainless-steel tube (4 cm x 1 mm) packed with Aminex A-28 (9 µm; acetate form) for determination of N-methylcarbamate pesticides and the other a similar tube packed with urease immobilized on silica for determination of urea. The eluate from either reactor is mixed with phthalaldehyde (for fluorimetric detection) by use of a low-dead-volume T-piece. An online pre-column trace-enrichment procedure is described for determination of N-methylcarbamates in surface waters; limits of determination are at the low-ppb level.
Carbamates, N-methyl
Surface
Post-column derivatization
Preconcentration
Miniaturization