Determination of As^<III>/As^V Ratio in Alluvial Sediments of the Bengal Basin Using X-ray Absorption Near-edge Structure
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In this study, we applied X-ray absorption near-edge structure spectroscopy (XANES) to the determination of the As<SUP>III</SUP>/As<SUP>V</SUP> ratios in sediments in the Bengal Basin, where groundwater contamination of As causes serious health hazard. The depth profile of oxidation state of As in sediment shows that As<SUP>III</SUP> is dominant species in the depth where As concentration of groundwater is high. This result is consistent with the general understanding about mobility of inorganic As species in various field observations.
- Chemistry Letters
Chemistry Letters 35(8), 866-867, 2006-08-05
The Chemical Society of Japan