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
Electrode
Citations 3
"Amperometric Determination Of Formate With A Nickel Electrode"
Anal. Chim. Acta
1985 Volume 178, Issue 2 Pages 313-317
Notice (8): Undefined variable: uid [APP/View/Elements/citation.ctp, line 40]H. W. Shih and C. O. HuberCode Context?><?phpif($uid!='') {$viewFile = '/home/stuchalk/public_html/fad/app/View/Elements/citation.ctp' $dataForView = array( 'data' => array( 'Technique' => array( 'id' => '0183', 'label' => 'Electrode', 'level1' => 'Electrode', 'level2' => 'nickel', 'level3' => '', 'level4' => '', 'level5' => '', 'synonyms' => '', 'champ' => '', 'total' => '3', 'updated' => '0000-00-00 00:00:00', 'name' => 'Electrode, nickel', 'nametotal' => 'Electrode, nickel**3', 'first' => 'E' ), 'Citation' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ), (int) 2 => array( [maximum depth reached] ) ) ), 'c' => array( 'id' => '004785', 'authors' => 'Shih, H.W.;Huber, C.O.', 'authorsweb' => 'H. W. Shih and C. O. Huber', 'title' => 'Amperometric determination of formate with a nickel electrode', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1985V0178P00313', 'year' => '1985', 'volume' => '178', 'issue' => '2', 'startpage' => '313', 'endpage' => '317', 'type' => 'Journal Article', 'analytes' => ';0995;', 'matrices' => '', 'techniques' => ';0001;0183;0202;', 'keywords' => ';0230;0212;', 'abstract' => 'Better stability and sensitivity in the amperometric determination of formate was obtained with a tubular nickel electrode (1.0 mm x 0.8 mm) rather than a platinum-wire electrode (7 mm x 0.5 mm). A flow injection system with a nickel electrode was used to monitor formate and other C1 species and to study the kinetics of hydrolysis of CHCl3, CO and dimethylformamide to produce formate. The detection limit for formate in a 30 µL sample was 0.02 mM with rectilinear response to 7.0 mM. The coefficient of variation was 1% and signals generated in the anodic detection of 1 mM methanol, formaldehyde and methylamine were 170, 180 and 830 nA, respectively. Advantages of the technique included direct detection of reaction product, low detection limits, fast measurement, reduced exposure to air and small sample volume.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '4', 'urlcheck' => '2014-10-11 15:48:41', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01023', 'pauthor' => '!Huber, C.O.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1016/S0003-2670(00)86282-0', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Amperometric determination of formate with a nickel electrode', Anal. Chim. Acta, 1985 178(2) 313-317', 'firstchar' => 'A', 'twochars' => 'Am', 'CitationsTechnique' => array( 'id' => '001075', 'citation_id' => '004785', 'technique_id' => '0183' ), 'Analyte' => array( (int) 0 => array( [maximum depth reached] ) ), 'Matrix' => array(), 'Keyword' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ) ) ), 'i' => (int) 0 ) $data = array( 'Technique' => array( 'id' => '0183', 'label' => 'Electrode', 'level1' => 'Electrode', 'level2' => 'nickel', 'level3' => '', 'level4' => '', 'level5' => '', 'synonyms' => '', 'champ' => '', 'total' => '3', 'updated' => '0000-00-00 00:00:00', 'name' => 'Electrode, nickel', 'nametotal' => 'Electrode, nickel**3', 'first' => 'E' ), 'Citation' => array( (int) 0 => array( 'id' => '004785', 'authors' => 'Shih, H.W.;Huber, C.O.', 'authorsweb' => 'H. W. Shih and C. O. Huber', 'title' => 'Amperometric determination of formate with a nickel electrode', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1985V0178P00313', 'year' => '1985', 'volume' => '178', 'issue' => '2', 'startpage' => '313', 'endpage' => '317', 'type' => 'Journal Article', 'analytes' => ';0995;', 'matrices' => '', 'techniques' => ';0001;0183;0202;', 'keywords' => ';0230;0212;', 'abstract' => 'Better stability and sensitivity in the amperometric determination of formate was obtained with a tubular nickel electrode (1.0 mm x 0.8 mm) rather than a platinum-wire electrode (7 mm x 0.5 mm). A flow injection system with a nickel electrode was used to monitor formate and other C1 species and to study the kinetics of hydrolysis of CHCl3, CO and dimethylformamide to produce formate. The detection limit for formate in a 30 µL sample was 0.02 mM with rectilinear response to 7.0 mM. The coefficient of variation was 1% and signals generated in the anodic detection of 1 mM methanol, formaldehyde and methylamine were 170, 180 and 830 nA, respectively. 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Acta, 1985 178(2) 313-317', 'firstchar' => 'A', 'twochars' => 'Am', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array([maximum depth reached]), 'Keyword' => array( [maximum depth reached] ) ), (int) 1 => array( 'id' => '005891', 'authors' => 'Liu, A.N.;Wang, E.K.', 'authorsweb' => 'Anhua Liu and Erkang Wang*', 'title' => 'Amperometric detection of amino-acids in a flow injection system with a nickel(II)-modified electrode with an Eastman-AQ polymer film', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1993V0280P00223', 'year' => '1993', 'volume' => '280', 'issue' => '2', 'startpage' => '223', 'endpage' => '229', 'type' => 'Journal Article', 'analytes' => ';0160;', 'matrices' => '', 'techniques' => ';0001;0183;0066;', 'keywords' => '', 'abstract' => 'The cited electrode was prepared by coating a polished thin-layer vitreous C disc electrode (0.071 cm2) with aqueous 2% Eastman-AQ polymer solution (Eastman Kodak, Rochester, NY, USA) and 0.1 mM NiSO4 solution Cyclic voltammetry was performed with Pt-wire counter and Ag/AgCl reference electrodes, in 0.1 M KOH from +0.15-0.65 V. Amino-acids were determined by the enhancement of anodic current at +0.55 V (due to oxidation by an active Ni(III) oxide formed on the electrode surface). Double-coated electrodes (0.012 cm2) were used as detectors for the determination of amino-acids in a flow injection system using LC, with operation at +0.55 V in 0.1 M KOH containing 10 µM-NiSO4, with a flow-rate of 1 ml/min. The calibration graph was linear from 5 µM- to 0.1 M glycine, with a detection limit of 1 µM; the RSD was 5% (for 10 µM-glycine). The electrode was stable for 1 week. Serine and tyrosine were detected at 0.1 mM after separation by LC on a column (20 cm x 4 mm i.d.) of Nucleosil C18 (7 µm) with 0.05 M potassium phosphate buffer of pH 8.7 containing 10 µM-NiSO4 as mobile phase (1 ml/min). Peak currents and detection limits for other amines and amino-acids are tabulated.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '0', 'urlcheck' => '2014-10-11 16:09:50', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01388', 'pauthor' => '!Wang, E.K.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1016/0003-2670(93)85125-4', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Amperometric detection of amino-acids in a flow injection system with a nickel(II)-modified electrode with an Eastman-AQ polymer film', Anal. Chim. Acta, 1993 280(2) 223-229', 'firstchar' => 'A', 'twochars' => 'Am', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array([maximum depth reached]), 'Keyword' => array([maximum depth reached]) ), (int) 2 => array( 'id' => '006460', 'authors' => 'Milardovic, S.;Kruhak, I.;Ivekovic, D.;Rumenjak, V.;Tkalcec, M.;Grabaric, B.S.', 'authorsweb' => 'S. Milardovia,*, I. Kruhaka, D. Ivekovia, V. Rumenjakb, M. Tkaleca and B. S. Grabaria', 'title' => 'Glucose determination in blood-samples using flow injection analysis and an amperometric biosensor based on glucose-oxidase immobilized on hexacyanoferrate modified nickel electrode', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1997V0350P00091', 'year' => '1997', 'volume' => '350', 'issue' => '1-2', 'startpage' => '91', 'endpage' => '96', 'type' => 'Journal Article', 'analytes' => ';1057;', 'matrices' => ';0101;', 'techniques' => ';0001;0183;0080;0092;0431;', 'keywords' => ';0217;0244;', 'abstract' => 'A very simple amperometric enzyme-based glucose sensor is applied as detector in flow injection analysis (FIA) of diabetic patients blood glucose. The enzyme glucose oxidase (GOD) is immobilized by a glutaraldehyde/bovine serum albumin crosslinking procedure on the surface of an alkali nickel hexacyanoferrate thin film electrocrystallized on the nickel electrode. An alkali nickel hexacyanoferrate modified nickel electrode catalyzes the reduction of the hydrogen peroxide, formed by selective biocatalytic GOD action on glucose oxidation by oxygen present in sample solutions. The developed glucose sensor has shown good sensitivity at low negative operating potentials (-300 to -100 mV vs. Ag/AgCl), sufficiently wide linear glucose concentration range (5 µM-2.9 mM), relatively long operating time (during three months of operation the initial sensitivity decreased only 30%) and no influence of the most common interferences present in human blood like proteins, ascorbic and uric acids. 38 References', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '6', 'urlcheck' => '2014-10-11 16:24:01', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00632', 'pauthor' => '!Milardovic, S.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1016/S0003-2670(97)00308-5', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Glucose determination in blood-samples using flow injection analysis and an amperometric biosensor based on glucose-oxidase immobilized on hexacyanoferrate modified nickel electrode', Anal. Chim. Acta, 1997 350(1-2) 91-96', 'firstchar' => 'G', 'twochars' => 'Gl', 'CitationsTechnique' => array( [maximum depth reached] ), 'Analyte' => array( [maximum depth reached] ), 'Matrix' => array( [maximum depth reached] ), 'Keyword' => array( [maximum depth reached] ) ) ) ) $c = array( 'id' => '004785', 'authors' => 'Shih, H.W.;Huber, C.O.', 'authorsweb' => 'H. W. Shih and C. O. Huber', 'title' => 'Amperometric determination of formate with a nickel electrode', 'journal' => 'Anal. Chim. 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Abstract:
Better stability and sensitivity in the amperometric determination of formate was obtained with a tubular nickel electrode (1.0 mm x 0.8 mm) rather than a platinum-wire electrode (7 mm x 0.5 mm). A flow injection system with a nickel electrode was used to monitor formate and other C1 species and to study the kinetics of hydrolysis of CHCl3, CO and dimethylformamide to produce formate. The detection limit for formate in a 30 µL sample was 0.02 mM with rectilinear response to 7.0 mM. The coefficient of variation was 1% and signals generated in the anodic detection of 1 mM methanol, formaldehyde and methylamine were 170, 180 and 830 nA, respectively. Advantages of the technique included direct detection of reaction product, low detection limits, fast measurement, reduced exposure to air and small sample volume.
Formate
Kinetic
Indirect
"Amperometric Detection Of Amino-acids In A Flow Injection System With A Nickel(II)-modified Electrode With An Eastman-AQ Polymer Film"
Anal. Chim. Acta
1993 Volume 280, Issue 2 Pages 223-229
Notice (8): Undefined variable: uid [APP/View/Elements/citation.ctp, line 40]Anhua Liu and Erkang Wang*Code Context?><?phpif($uid!='') {$viewFile = '/home/stuchalk/public_html/fad/app/View/Elements/citation.ctp' $dataForView = array( 'data' => array( 'Technique' => array( 'id' => '0183', 'label' => 'Electrode', 'level1' => 'Electrode', 'level2' => 'nickel', 'level3' => '', 'level4' => '', 'level5' => '', 'synonyms' => '', 'champ' => '', 'total' => '3', 'updated' => '0000-00-00 00:00:00', 'name' => 'Electrode, nickel', 'nametotal' => 'Electrode, nickel**3', 'first' => 'E' ), 'Citation' => array( (int) 0 => array( [maximum depth reached] ), (int) 1 => array( [maximum depth reached] ), (int) 2 => array( [maximum depth reached] ) ) ), 'c' => array( 'id' => '005891', 'authors' => 'Liu, A.N.;Wang, E.K.', 'authorsweb' => 'Anhua Liu and Erkang Wang*', 'title' => 'Amperometric detection of amino-acids in a flow injection system with a nickel(II)-modified electrode with an Eastman-AQ polymer film', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1993V0280P00223', 'year' => '1993', 'volume' => '280', 'issue' => '2', 'startpage' => '223', 'endpage' => '229', 'type' => 'Journal Article', 'analytes' => ';0160;', 'matrices' => '', 'techniques' => ';0001;0183;0066;', 'keywords' => '', 'abstract' => 'The cited electrode was prepared by coating a polished thin-layer vitreous C disc electrode (0.071 cm2) with aqueous 2% Eastman-AQ polymer solution (Eastman Kodak, Rochester, NY, USA) and 0.1 mM NiSO4 solution Cyclic voltammetry was performed with Pt-wire counter and Ag/AgCl reference electrodes, in 0.1 M KOH from +0.15-0.65 V. Amino-acids were determined by the enhancement of anodic current at +0.55 V (due to oxidation by an active Ni(III) oxide formed on the electrode surface). Double-coated electrodes (0.012 cm2) were used as detectors for the determination of amino-acids in a flow injection system using LC, with operation at +0.55 V in 0.1 M KOH containing 10 µM-NiSO4, with a flow-rate of 1 ml/min. The calibration graph was linear from 5 µM- to 0.1 M glycine, with a detection limit of 1 µM; the RSD was 5% (for 10 µM-glycine). The electrode was stable for 1 week. Serine and tyrosine were detected at 0.1 mM after separation by LC on a column (20 cm x 4 mm i.d.) of Nucleosil C18 (7 µm) with 0.05 M potassium phosphate buffer of pH 8.7 containing 10 µM-NiSO4 as mobile phase (1 ml/min). 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Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1993V0280P00223', 'year' => '1993', 'volume' => '280', 'issue' => '2', 'startpage' => '223', 'endpage' => '229', 'type' => 'Journal Article', 'analytes' => ';0160;', 'matrices' => '', 'techniques' => ';0001;0183;0066;', 'keywords' => '', 'abstract' => 'The cited electrode was prepared by coating a polished thin-layer vitreous C disc electrode (0.071 cm2) with aqueous 2% Eastman-AQ polymer solution (Eastman Kodak, Rochester, NY, USA) and 0.1 mM NiSO4 solution Cyclic voltammetry was performed with Pt-wire counter and Ag/AgCl reference electrodes, in 0.1 M KOH from +0.15-0.65 V. Amino-acids were determined by the enhancement of anodic current at +0.55 V (due to oxidation by an active Ni(III) oxide formed on the electrode surface). 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The developed glucose sensor has shown good sensitivity at low negative operating potentials (-300 to -100 mV vs. Ag/AgCl), sufficiently wide linear glucose concentration range (5 µM-2.9 mM), relatively long operating time (during three months of operation the initial sensitivity decreased only 30%) and no influence of the most common interferences present in human blood like proteins, ascorbic and uric acids. 38 References', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '6', 'urlcheck' => '2014-10-11 16:24:01', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '00632', 'pauthor' => '!Milardovic, S.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1016/S0003-2670(97)00308-5', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Glucose determination in blood-samples using flow injection analysis and an amperometric biosensor based on glucose-oxidase immobilized on hexacyanoferrate modified nickel electrode', Anal. 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Abstract:
The cited electrode was prepared by coating a polished thin-layer vitreous C disc electrode (0.071 cm2) with aqueous 2% Eastman-AQ polymer solution (Eastman Kodak, Rochester, NY, USA) and 0.1 mM NiSO4 solution Cyclic voltammetry was performed with Pt-wire counter and Ag/AgCl reference electrodes, in 0.1 M KOH from +0.15-0.65 V. Amino-acids were determined by the enhancement of anodic current at +0.55 V (due to oxidation by an active Ni(III) oxide formed on the electrode surface). Double-coated electrodes (0.012 cm2) were used as detectors for the determination of amino-acids in a flow injection system using LC, with operation at +0.55 V in 0.1 M KOH containing 10 µM-NiSO4, with a flow-rate of 1 ml/min. The calibration graph was linear from 5 µM- to 0.1 M glycine, with a detection limit of 1 µM; the RSD was 5% (for 10 µM-glycine). The electrode was stable for 1 week. Serine and tyrosine were detected at 0.1 mM after separation by LC on a column (20 cm x 4 mm i.d.) of Nucleosil C18 (7 µm) with 0.05 M potassium phosphate buffer of pH 8.7 containing 10 µM-NiSO4 as mobile phase (1 ml/min). Peak currents and detection limits for other amines and amino-acids are tabulated.
Amino Acids
"Glucose Determination In Blood-samples Using Flow Injection Analysis And An Amperometric Biosensor Based On Glucose-oxidase Immobilized On Hexacyanoferrate Modified Nickel Electrode"
Anal. Chim. Acta
1997 Volume 350, Issue 1-2 Pages 91-96
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An alkali nickel hexacyanoferrate modified nickel electrode catalyzes the reduction of the hydrogen peroxide, formed by selective biocatalytic GOD action on glucose oxidation by oxygen present in sample solutions. 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Huber', 'title' => 'Amperometric determination of formate with a nickel electrode', 'journal' => 'Anal. Chim. Acta', 'journal_id' => '0584', 'fadid' => 'ANCA1985V0178P00313', 'year' => '1985', 'volume' => '178', 'issue' => '2', 'startpage' => '313', 'endpage' => '317', 'type' => 'Journal Article', 'analytes' => ';0995;', 'matrices' => '', 'techniques' => ';0001;0183;0202;', 'keywords' => ';0230;0212;', 'abstract' => 'Better stability and sensitivity in the amperometric determination of formate was obtained with a tubular nickel electrode (1.0 mm x 0.8 mm) rather than a platinum-wire electrode (7 mm x 0.5 mm). A flow injection system with a nickel electrode was used to monitor formate and other C1 species and to study the kinetics of hydrolysis of CHCl3, CO and dimethylformamide to produce formate. The detection limit for formate in a 30 µL sample was 0.02 mM with rectilinear response to 7.0 mM. The coefficient of variation was 1% and signals generated in the anodic detection of 1 mM methanol, formaldehyde and methylamine were 170, 180 and 830 nA, respectively. Advantages of the technique included direct detection of reaction product, low detection limits, fast measurement, reduced exposure to air and small sample volume.', 'language' => 'English', 'updated' => '2020-12-28 11:25:15', 'sjccheck' => 'Yes', 'sjccheckdate' => '0000-00-00 00:00:00', 'hits' => '4', 'urlcheck' => '2014-10-11 15:48:41', 'urlcheckcode' => 'HTTP/1.1 302 Found', 'pauthor_id' => '01023', 'pauthor' => '!Huber, C.O.', 'address' => 'pau', 'email' => 'pau', 'notes' => null, 'url' => '10.1016/S0003-2670(00)86282-0', 'urltype' => 'doi', 'gotpdf' => 'yes', 'partial' => 'no', 'notanalyte' => '', 'citation' => ''Amperometric determination of formate with a nickel electrode', Anal. Chim. 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Milardovia,*, I. Kruhaka, D. Ivekovia, V. Rumenjakb, M. Tkaleca and B. S. Grabaria'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:
A very simple amperometric enzyme-based glucose sensor is applied as detector in flow injection analysis (FIA) of diabetic patients blood glucose. The enzyme glucose oxidase (GOD) is immobilized by a glutaraldehyde/bovine serum albumin crosslinking procedure on the surface of an alkali nickel hexacyanoferrate thin film electrocrystallized on the nickel electrode. An alkali nickel hexacyanoferrate modified nickel electrode catalyzes the reduction of the hydrogen peroxide, formed by selective biocatalytic GOD action on glucose oxidation by oxygen present in sample solutions. The developed glucose sensor has shown good sensitivity at low negative operating potentials (-300 to -100 mV vs. Ag/AgCl), sufficiently wide linear glucose concentration range (5 µM-2.9 mM), relatively long operating time (during three months of operation the initial sensitivity decreased only 30%) and no influence of the most common interferences present in human blood like proteins, ascorbic and uric acids. 38 References
Glucose
Human Blood
Interferences
Linear dynamic range