Electrochemical Preconcentration of Arsenic(III) in Its Determination by Stripping Voltammetry at Graphite Electrodes Modified with Gold and Copper

Journal of Analytical Chemistry - Tập 56 - Trang 850-855 - 2001
A. I. Kamenev1, S. E. Orlov1, A. B. Lyakhov1
1Department of Chemistry, Moscow State University, Leninskie gory, Moscow, Russia

Tóm tắt

The effect of some factors (potential and time of electrolysis, nature and concentration of supporting electrolyte) on the electrochemical preconcentration of arsenic at graphite electrodes modified with copper and gold adatoms was studied. The data obtained were used for the determination of 10–7to 10–6M arsenic(III) by stripping voltammetry. The detection limits for arsenic using graphite electrodes modified with copper and gold were 6.3 × 10–7and 2.3 × 10–7M, respectively.

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Thông tin xuất bản

Journal of Analytical Chemistry

Tập 56

850-855

Thông tin tác giả