Pedosphere 8(2): 175--180, 1998
ISSN 1002-0160/CN 32-1315/P
©1998 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Chemical forms of mercury in soils and their influencing factors |
| QING Chang-Le, MOU Shu-Sen, GUO Tang-Yong and LI Qing-Hua |
| Southwest Agricultural University, Chongqing 400716 (China) |
| ABSTRACT |
| Experiments were carried out to study the transformation of mercury in soils. Results showed that Hg2+ was immediately converted into ot her forms once it entered into soils. Bentonite, humus or CaCO3 accelerated the transformation of Hg2+ by various mechanisms. Bentonite could convert Hg2+ into residual form eventually, and application of CaCO3 enhanced the formation of inorganic Hg. Humus competed strongly with clay minerals for binding Hg2+, thus increase of soil humus content led to increased formation of organically bound Hg. |
| Key Words: bentonite, CaCO3, humus, soil Hg forms |
| Citation: Qing, C. L., Mou, S. S., Guo, T. Y. and Li, Q. H. 1998. Chemical forms of mercury in soils and their influencing factors. Pedosphere. 8(2): 175-180. |
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