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土壤圈(英文版). 1998, (02)

Chemical Forms of Mercury in Soils and Their Influencing Factors *1English Full Text

QING CHANGLE, MOU SHUSEN, GUO TANGYONG and LI QINGHUA Southwest Agricultural University, Chongqing 400716 (China)

Abstract: Experiments were carried out to study the transformation of mercury in soils. Results showed that Hg 2+ was immediately converted into other forms once it entered into soils. Bentonite, humus or CaCO 3 accelerated the transformation of Hg 2+ by various mechanisms. Bentonite could convert Hg 2+ into residual form eventually, and application of CaCO 3 enhanced the formation of inorganic Hg. Humus competed strongly with clay minerals for binding Hg 2+ , thus increase of soil humus content led to increased formation of organically bound Hg.
Keywords：

bentonite; CaCO 3; humus; soil Hg forms;

  • Series：

    (D) Agriculture; (A) Mathematics/ Physics/ Mechanics/ Astronomy

  • Subject：

    Physical Geography and Topography; Fundamental Science of Agriculture; Agronomy

  • Classification Code：

    S153

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