ISSN:
1040-0397
Keywords:
Copper
;
Speciation
;
Stripping voltammetry
;
Seawater
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Copper in seawater was analyzed with a ‘hybrid’ mercury film-glassy carbon electrode using linear sweep, square wave and differential pulse anodic stripping voltammetry. The analyses were made in HCl (pH 2) and ethylenediamine (EN)-spiked seawater (9 〈 pH 〈 10), with and without purging the sample of dissolved oxygen. The relative slopes of the standard addition plots were used to determine the effect of mode and media alteration on the results. Square-wave voltammetry in EN-altered seawater, without oxygen purging, was found to be not only the most practical technique, but also highly sensitive. The ‘chemistry’ of the oxidation reaction during the stripping step was found to affect the experimental results markedly. For this reason, the peak current is an experimentally dependent measure of the ion flux, both, into and out of the electrode.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/elan.1140080607
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