Hand-held instrumentation for environmental monitoring

Abstract

A prototype hand-held electroanalytical instrument has been developed for the simultaneous detection and determination of four electroactive ions in solution. The instrument, which can be battery powered, utilizes the technique of anodic linear-scan stripping voltammetry at a mercury thin-film electrode. The instrumentation and its application to the measurement of solution concentrations of cadmium, copper and lead in the range 10^–4–10^–5 mol dm^–3 are described.