Effect of organic matter and pH on mercury release from soils

文献类型: 外文期刊

第一作者: Yang, Yong-Kui

作者: Yang, Yong-Kui;Zhang, Cheng;Shi, Xiao-Jun;Lin, Tao;Wang, Ding-Yong

作者机构:

关键词: mercury;organic matter;pH;release flux

期刊名称:JOURNAL OF ENVIRONMENTAL SCIENCES ( 影响因子:5.9; 五年影响因子:5.6 )

ISSN: 1001-0742

年卷期: 2007 年 19 卷 11 期

页码:

收录情况: SCI

摘要: An investigation was conducted on the effect of organic matter (OM) and pH on mercury (Hg) release from soils. Hg release flux was measured using the dynamic flux chamber (DFC) combined with the Lumex (R) multifunctional mercury analyzer in both laboratory experiment and field monitoring. The results showed that Hg emission from the OM-added soils was apparently low because of the high affinity of OM to Hg, resulting in the reverse order as the amount of OM addition. Meanwhile, Hg release flux from different pH value soils exhibited the same trend for both Hg2+ and Hg-2(2+) treatment, increasing the Hg flux with pH value of soils increasing. The trend of Hg release in the pH dependence experiment has been well in agreement with that from the field test. In addition, Hg release seemed to be related to its species in the soil, the flux from Hg2+-added soil was obviously higher than that of Hg-2(2+)-added soil by the laboratory experiment.

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