Redox substoichiometric determination of arsenic in biological materials by neutron activation analysis |
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Authors: | Y Kanda N Suzuki |
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Institution: | (1) National Research Institute of Police Science, Sanban-cho, Chiyoda-ku, 102 Tokyo, (Japan);(2) Department of Chemistry, Faculty of Science, Tohoku University, 980 Sendai, (Japan) |
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Abstract: | A redox substoichiometry is proposed for an accurate and precise determination of arsenic. This method is based on the substoichiometric
oxidation of trivalent arsenic to pentavalent with potassium bromate or ceric sulfate followed by the separation of these
species by thionalide extraction of trivalent arsenic. It was applied to neutron activation analysis of arsenic in the NBS
SRM Orchard Leaves and the Shark Powder. The results were obtained with an excellent accuracy and precision. |
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Keywords: | |
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