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
Website: @unf

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Classification: Industrial -> boiler water

Citations 2

"Simultaneous Determination Of Copper, Lead, Cadmium And Zinc Using Differential Pulse Anodic Stripping Voltammetry In A Flow System"
Anal. Chim. Acta 2000 Volume 411, Issue 1-2 Pages 201-207
J. F. van Staden and M. C. Matoetoe

Abstract: The use of differential pulse anodic stripping voltammetry (DPASV) in a how system for the simultaneous determination of Cu, Cd, Fe, Pb and Zn was evaluated for applicability with a glassy carbon electrode. Simultaneous quantitative analysis for these elements is possible at low concentrations of Fe when using pyrophosphate as a supporting electrolyte (pH 4.0). An application of the proposed method is reported for the determination of these elements in water samples. The working ranges are 50-500 µg L-1 for Cu, Cd and Pb and 100-400 µg L-1 for Zn. The Fe content was negligible in these samples. Recovery studies and metallic interferences are reported. Detection limits of 39, 9.6, 16.6 and 14.7 µg L-1 for Cu, Cd, Pb and Zn, respectively, were obtained.
Copper Lead Cadmium Zinc Voltammetry Electrode Interferences Optimization

"Evaluation Of Flow Injection Analysis Method For Total Water Hardness Using A Copper(II) Ion Detector And Correlation With Japanese Industrial Standard Method"
J. Flow Injection Anal. 1991 Volume 8, Issue 2 Pages 148-159
Aki SAKAI, Akihide HENMI, Satoshi ITO, Yasukazu ASANO and Yoshito FUSHINUKI

Abstract: To assay tap-water, river water or industrial boiler water, a 200 µL sample is injected into a stream of water and carried to a reaction tube (500 cm x 0.5 mm) to mix with streams of 0.01 M EDTA - 0.01 M Cu(NO3)2 - 1 mM triethylenetetramine and 0.5 M KNO3 (all streams at 0.9 mL min-1) before detection with a Cu2+-selective electrode (structure of flow cell and electrode shown). The calibration graph is rectilinear for 0.1 to 0.6 mM Ca2+, and the detection limit is 25 µM. Average coefficient of variation is 3%. The method shows good response to both Ca2+ and Mg2+. Interference from Fe2+, Zn2+ and Ba2+ is observed. Sampling rate is 30 h-1. Results are satisfactory and correlate well with those obtained by the Japanese industrial standard method.
Hardness Electrode EDTA Interferences Standard method