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Determination of As(III) and As(V) in oilseeds by chronopotentiometric stripping analysis: development of a method.

Svarc-Gajić JV, Suturović ZJ, Marjanović NJ, Kravić SZ

Faculty of Technology, Department of Applied and Engineering Chemistry, Novi Sad, Serbia and Montenegro. jaroslava@technol.ns.ac.yu

Chronopotentiometric stripping analysis (CSA) was used for selective determination of As(III) and As(V) in different oilseeds. After the optimization of experimental parameters an appropriate procedure for sample pretreatment was developed. A detection limit of 2 microg/dm3 for As(III) was obtained with an electrolysis time of 600 s. This method was used for arsenic determination in sunflower, pumpkin, and flax seed, as well as for soy flakes and almond.

Published 18 May 2005 in Mol Nutr Food Res, 49(4): 337-42.
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