Field-based heavy metal analyser for the simultaneous determination of multiple cations on-site
- 1 January 1994
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 119 (11) , 2337-2341
- https://doi.org/10.1039/an9941902337
Abstract
A hand-held, battery-powered electroanalytical instrument utilizing anodic stripping voltammetry was designed to determine simultaneously solution concentrations of Cu2+, Pb2+ and Cd2+ in environmental samples down to 10 µg l–1, with an overall analysis time of 180 s. The instrument utilizes baseline and peak correction, a glassy carbon working electrode, in situ plating and forced convection to achieve low detection limits. Analysis is undertaken by pre-treatment of the sample with 1 ml of a solution of matrix-modifying electrolyte containing a mixture of hydrochloric acid and mercury(II) salt. The instrument and its application to the determination of heavy metals in rivers, lakes and tap water are described.Keywords
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