Vertical concentration distributions of arsenic in a reservoir and its sediment.
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概要
- 論文の詳細を見る
Vertical concentration distributions of arsenite and arsenate in a reservoir (depth, ≈31 m) and its bottom sediment (core depth, ≈18 cm) have been investigated. The concentrations of arsenite and arsenate in the water were determined by a spectrophotometric method, and those in the sediment were also determined by the same method after the following leaching-treatments of the sediment. The leaching of arsenic from the sediment was carried out by using three solutions; (1) 0.1 M hydrochloric acid (acid-soluble fraction), (2) 1 M sodium hydroxide solution (alkali-soluble fraction), and (3) hydrofluoric and perchloric acid mixture (silicate fraction). It was found that arsenic was rich in the surface layer of the sediment, and most of it existed as arsenite fixed with iron hydroxide. Based on the analytical and leaching results of arsenic, iron, manganese, zinc, copper, and others in the reservoir and in its sediment respectively, the sedimentation process of arsenic from the reservoir and its dissolution process from the sediment have been discussed.
- 公益社団法人 日本化学会の論文
著者
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Tamari Yuzo
Department Of Chemistry Faculty Of Science Konan University
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Nishimura Kimio
Department Of Food And Nutrition Faculty Of Home Economics Kochi Women's University
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Tsuji Haruo
Department of Chemistry Faculty of Science Konan University
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Kusaka Yuzuru
Department of Chemistry Faculty of Science Konan University
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Nishimura Kimio
Department of Chemistry, Faculty of Science, Konan University
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