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A method is described for the cathodic stripping potentiometric determination of arsenic on a mercury film electrode in 1M HCl which contained copper (II) ions. Optimum determination of arsenic in this medium was accomplished with an electrolysis potential of -600mV vs Ag/AgCl (1M HCl) and application of a small constant reducing current (-1.5μA) during the stripping step. As little as 2μg/l of arsenic...
An on-line flow injection hydride generation atomic absorption spectrometry (FI-HG-AAS) system was developed to study the effect of acid concentration on the arsine generation from arsenite (As(III)), arsenate (As(V)), monomethylarsonic acid (MMAA) and dimethylarsinic acid (DMAA) pretreated in different reaction media. The signals for the arsines generated from MMAA and DMAA prepared in aqueous pure...
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