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Voltammetric Determination of Arsenic in Plant Material

✍ Scribed by Joanna Kowalska; Ewa Stryjewska; Paweł Szymański; Jerzy Golimowski

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
80 KB
Volume
11
Category
Article
ISSN
1040-0397

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✦ Synopsis

Cathodic stripping voltammetry (CSV) with a hanging mercury drop electrode (HMDE) was applied to the determination of arsenic content in samples of nettle plants growing in the area characterized by contamination of anthropogenic origin. The arsenic determinations, preceded by As(V) to As(III) reduction, were carried out in acidic medium in the presence of Cu(II). The plant material digestion was conducted in a HNO 3 aHClO 4 mixture using a modi®ed pressurized microwave decomposition method to improve the sensitivity 10-fold. ETAAS technique was used as a reference method. The whole procedure was tested on OTL 1 (Tobacco leaves) certi®ed reference material.

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