The photochemical reduction of divalent mercury and methyl-mercury

被引：8
|
作者：
Liu, JH [1 ]
Wang, WH [1 ]
Peng, A [1 ]
机构：
[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 10085, Peoples R China
来源：
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING | 2000年 / 35卷 / 10期
基金：
中国国家自然科学基金;
关键词：
photochemical; reduction; mercury; methyl-mercury;
D O I：
10.1080/10934520009377081
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this paper, the photochemical transformation of divalent mercury ions and methyl-mercury in water solutions was studied under simulated sunlight in a laboratory setting. The results indicated that the Hg2+ in solution can be reduced to Hg-0 under irradiation, which was subsequently released to gaseous phase. Natural organic matter, such as fulvic acid (FA), can influence the reduction of Hg2+. The reduction rate of Hg2+ in the presence of FA was enhanced in the initial period. Methyl-mercury can also be photochemically reduced to gaseous Hg-0. Both the irradiation and FA can greatly accelerate the transformation process in solution. This study was of significance in understanding the transformation of divalent mercury and methyl-mercury at the water-atmosphere interface.
引用
收藏
页码：1859 / 1867
页数：9
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