University of North Florida
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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

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Chemistry Express

  • Publisher:
  • FAD Code: CHEX
  • CODEN: CHEXEU
  • ISSN: 0911-9566
  • Abbreviation: Chem. Express
  • DOI Prefix: NA
  • Other Name(s): Journal of the Kinki Chemical Society
  • Language: Japanese

Citations 6

"Selective Determination Of Iodide And Iodate In Brine Waters By Atmospheric Pressure Helium Microwave-induced Plasma Atomic-emission Spectrometry With Continuous-flow Generation Of Volatile Iodine"
Chem. Express 1991 Volume 6, Issue 1 Pages 5-8
Nakahara, T.;Yamada, S.;Wasa, T.

Abstract: A method is described for the determination of iodide and iodate in brine by atmospheric pressure helium microwave-induced plasma AES. The method is based on the continuous evolution of volatile iodine by oxidation of iodide with sodium nitrate. Differentiation of iodide and iodate is achieved by pre-reduction of iodate to iodide with ascorbic acid. The detection limit is 2.3 ng mL-1 of iodine. Recoveries of added iodine were 94.2 to 103. 5%.
Iodate Iodide Environmental Water Spectrophotometry Selectivity

"Fluorimetric Determination Of Trace Amounts Of Calcium By Flow Injection Analysis"
Chem. Express 1989 Volume 4, Issue 6 Pages 381-384
Wada, H.;Atsumi, H.;Nakagawa, G.

Abstract: The trace amt. of calcium in 5 mol L-1 sodium chloride solution was determined with 2-[(2-amino-5-methylphenoxy)methyl]-6-methoxy-8-aminoquinoline-N,N,N',N'-tetraacetic acid (Quin 2) by fluorometric flow-injection anal. When highly concentrated sodium chloride samples (ca. 5 mol L-1) were injected into the carrier solution not containing NaCl, no ghost peaks were observed The detection limit (S/N = 3) of calcium was 3 mg L-1. The method provides the determination of calcium in chlor-alkali brine. (SFS)
Calcium Industrial Fluorescence

"Flow Injection Analysis Of Aqueous Ozone Based On The Ozone Decoloration Reaction Of 1-(2-hydroxy-5-sulfophenylazo)-2-napthol"
Chem. Express 1989 Volume 4, Issue 6 Pages 369-372
Onari, Y.

Abstract: The determination of ozone (O3) in water based on the decoloration reaction of 1-(2-hydroxy-5-sulfophenylazo)-2-naphthol was examined by using flow injection analysis (FIA) technique. The precision of FIA signal was good and the rapid determination (120 samples/h) of sub mg/L - mg/L levels of aqueous O3 were obtained. (SFS)
Ozone Water Spectrophotometry Indirect

"Determination Of Trace Amounts Of Alcohols By Gaseous Flow Injection Analysis"
Chem. Express 1988 Volume 3, Issue 9 Pages 539-542
Maeda, Y.;Fujio, Y.;Suetaka, T.;Munemori, M.

Abstract: Flow-injection analysis for rapid and reproducible determination of trace amounts of alcohols was developed on the basis of formation of an alkyl nitrite in the heterogeneous reaction of alcohols with NO2 on clean Pyrex glass surfaces. Detection limits for Me, Et and iso-Pr alcohols were 4.0, 0.8 and 2.3 ppb, respectively, using gas chromatography with electron capture detection. The method was applied to gas stove waste gases and automobile exhaust gases. (SFS)
Alcohols Exhaust Automobile Waste GC Gas stream Method comparison

"Simultaneous Assay Of Glucose And Cholesterol In Blood Serum By Combined Use Of Immobilized Enzyme Reactors And Enzyme Electrode In A Flow Injection System"
Chem. Express 1988 Volume 3, Issue 5 Pages 275-278
Yao, T.;Akasaka, R.;Wasa, T.

Abstract: The system comprises glucose oxidase and cholesterol oxidase reactors in parallel and a peroxidase electrode. Sep. peaks are obtained for glucose and cholesterol. The peak current is linearly related to glucose in the range 4-400 mg/dL and to cholesterol in the range 2-220 mg/dL. (SFS)
Glucose Cholesterol Blood Serum Amperometry Electrode Electrode Immobilized enzyme

"Flow Injection Analytical System For Simultaneous Determination Of Glucose And Sucrose Utilizing Immobilized Enzyme Bioreactors"
Chem. Express 1988 Volume 3, Issue 1 Pages 13-16
Yao, T.;Akasaka, R.;Wasa, T.

Abstract: A flow-injection anal. system with immobilized enzyme bioreactors (invertase-mutarotase-glucose oxidase) is described for the highly selective and highly sensitive simultaneous determination of glucose and sucrose. The simultaneous determination of glucose and sucrose in soft drinks could be performed on 30 samples/h with satisfactory precision (<1% relative standard deviation). (SFS)
Glucose Sucrose Soft drink Immobilized enzyme Multicomponent