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Evaluation of the effects of Hg/DOC ratios on the reduction of Hg(II) in lake water TEXT SIZE: A A A
Reduction of mercury (Hg) in natural waters, which releases a substantial amount of gaseous Hg(0) to the atmosphere, has a close relationship to Hg/DOC ratios. However, the role of Hg/DOC ratio on the Hg(II) reduction in natural waters remains poorly understood. In this study, natural water collected from Hongfeng Lake, SW China, was used to study the effects of Hg/DOC ratio on the Hg(II) reduction. The lake water was spiked with variable amounts of Hg to make different Hg/DOC solutions. Through a 72 h Hg(II) reduction process, we demonstrated that the maximum percentage reduction of Hg (29 +/- 3%) occurred when Hg/DOC ratio was 1134 ng mg(-1). Further increase or decrease of the Hg/DOC ratios would inhibit the reduction of Hg(II). This study clearly demonstrated that Hg/DOC ratio has a dual role in the reduction of Hg(II) from natural waters. (C) 2020 Elsevier Ltd. All rights reserved.
 

Publication name

 CHEMOSPHERE Volume: 253 Article Number: 126634 DOI: 10.1016/j.chemosphere.2020.126634 Published: AUG 2020

Author(s)

 Wang, Zhuhong; Fei, Zhijun; Wu, Qixin; Yin, Runsheng

Corresponding author(s) 

 YIN Runsheng 
 yinrunsheng@mail.gyig.ac.cn   
 Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Peoples R China.

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