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A microwave assisted wet digestion method for organoarsenic compounds and subsequent determination of total arsenic in aqueous, biological and sediment samples by means of flow injection hydride generation electrothermal atomic absorption spectrometry (FI-HG-ETAAS) is described. Sodium persulfate, sodium fluoride and nitric acid serve as digestion reagents, which allow a quantitative transformation...
A new method for the multielemental determination of arsenic and selenium species in sediment extracts is detailed. Anion exchange separation of As(III), As(V), DMA, MMA, Se(IV) and Se(VI) coupled to ICP-MS detection was accomplished in 10min on a Hamilton PRP-X100 column with step gradient of a NH 4 H 2 PO 4 based mobile phase (pH = 6). The extraction procedure used 1g of...
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