Abstract
Three sediment cores were collected from Lake Biwa, and analysed for their dimethylarsinate (DMA), monomethylarsonate (MMA), and inorganic arsenic (I-As) content. The analytical technique used included solvent extraction, anion-exchange chromatography, and final determination of arsenic by flameless atomic absorption spectrophotometry. The sediment was found to contain trace levels of DMA (undetectable-24.7 μg·kg-1) and MMA (20.8-44.1 μg·kg-1) in addition to I-As which tended to be present in the greatest amount. The depth profiles of DMA, MMA, and I-As were also analysed in detail.
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Schedule a callMore From: Japanese Journal of Limnology (Rikusuigaku Zasshi)
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