English Abstract From an environmental point of view, methods to
determine low concentrations of As(III) in surface waters are of great
interest. The performance characteristics of Differential Pulse Anodic
Stripping Voltammetry (DPASV) at a rotating gold electrode for the
determination of low concentrations of AS(III) were investigated. It
appeared that in a 1 M H2SO4 medium the calibration curves for As(III) were
linear over the concentration range investigated, up to 5 mug/l. Measurement
of As(III) is possible down to about 0.2 mug/l As(III). The presence of Cu
2+ and Cd 2+ had a severe, and Pb 2+ a moderate disturbing effect on the
determination of AS(III), turning the method inadequate for water polluted
with heavy metals.
