Investigation by automated differential pulse anodic-stripping voltammetry of the problem of storage of dilute solutions

A. M. Bond, B. W. Kelly

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Abstract

The storage of dilute solutions of metal ions before their laboratory analysis presents a difficult problem in the examination of many environmental samples. By utilizing the solution container as an electrochemical cell and employing the method of differential pulse anodic-stripping voltammetry at a hanging mercury drop electrode, it is shown that an automated read-out system in an enclosed environment can be developed for monitoring the solution-container interactions that occur over short or extended periods of time. In the present work, interactions of dilute solutions (1-10 μg/l.) of cadmium(II), lead(II), copper(II), zinc(II), and thallium(I) in glass, polyethylene and Teflon containers have been investigated at various pH values and in different ionic environments. The results demonstrate the importance of factors other than pH.

Original languageEnglish
Pages (from-to)453-457
Number of pages5
JournalTalanta
Volume24
Issue number7
DOIs
Publication statusPublished - Jul 1977
Externally publishedYes

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