Influence of pH Change on Cd Leachability and Chemical Forms of Contaminated Soil
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概要
- 論文の詳細を見る
The influence of pH change on Cd leachability and chemical forms of contaminated soil was investigated. Results of sequential extraction of soil Cd showed that more than 70% of the total Cd in the contaminated soil was associated with the exchangeable, inorganically-bound and organically-bound fractions, suggesting that most of Cd are mobile in soil. As the pH of soils decreased, the water-soluble Cd contents increased remarkably. The increase of the water-soluble Cd was mainly from the exchangeable and inorganically-bound fractions, and also a part from the organically-bound, oxide-occluded and residual fractions. It was concluded when soil becomes acid, not only Cd in the fractions which equilibrated with solution desorpted, but also that some Cd dissolved from oxide-occluded and residual fractions, which must be released from the destruction of oxides and mineral.
- 日本ペドロジー学会の論文
- 1998-06-30
著者
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Kosaki Takashi
Faculty Of Agriculture Kyoto University
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Miura Toshihiko
Technical Research Institute Obayashi Corporation
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Kang Yumei
Faculty Of Agriculture Kochi University
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Yumei Kang
Faculty Of Agriculture Kochi University
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