Determining Trace Concentrations of Copper in Water by Cathodic Film Stripping Voltammetry with Adsorptive Collection
作者:
C.M.G. van den Berg,
期刊:
Analytical Letters
(Taylor Available online 1984)
卷期:
Volume 17,
issue 19
页码: 2141-2157
ISSN:0003-2719
年代: 1984
DOI:10.1080/00032718408065362
出版商: Taylor & Francis Group
关键词: cathodic stripping voltammetry;copper;hanging mercury drop electrode.
数据来源: Taylor
摘要:
A technique is presented for the determination of trace concentrations of copper (II) in natural water samples by cathodic stripping voltammetry of a film of copper-catechol complex ions adsorbed on the hanging mercury drop electrode. The peak height of the copper-catechol reduction peak is linearly dependent upon the copper (II) concentration between 10−10and 10−7M. The detection limit of the technique is below 10−10M copper (II) for a collection time of 3 minutes, but the sensitivity can be further increased four-fold by collecting for 15 minutes. The sensitivity is reduced by high concentrations of competing trace metals and of surfactants, which necessitate the use of standard additions to the sample.
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