The effects of mariculture activities on the adsorption/desorption and chemical fractionations of mercury on sediments

Marine Pollution Bulletin
Peng LiangMing H Wong

Abstract

The aims of the present study were to investigate the effects of mariculture activities on inorganic mercury (Hg(2+)) adsorption/desorption on sediments and the distributions of newly adsorbed Hg(2+) on different chemical fractionations. The adsorption amount and binding energy of Hg(2+) on mariculture sediment (MS) were significantly higher (p<0.05) than reference sediment (RS). This may be explained by the strong complexation role that exists between Hg(2+) and organic matter (OM), which derived from unconsumed fish feed and fish metabolites. The reducible Hg(2+) in MS was significantly lower (p<0.01) than RS, which may have been caused by the decreasing amount of iron and manganese hydroxide in MS, lead to the decrease of Hg(2+) bound to them. On the contrary, the residual Hg(2+) was significantly higher (p<0.01) in MS than RS, which suggests that newly adsorbed Hg(2+) was more stable in MS than RS.

References

Feb 28, 2004·Chemosphere·Mahalingam Ravichandran
Aug 18, 2006·Environment International·L Zhang, M H Wong
Feb 27, 2007·Environmental Pollution·Qusheng LiJianhong Fang
Apr 10, 2008·Journal of Environmental Quality·Y D JingX E Yang
Apr 16, 2009·Environmental Toxicology and Chemistry·Huan Zhong, Wen-Xiong Wang

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Citations

Jun 19, 2014·Environmental Science and Pollution Research International·Zai-Wang ZhangJia-Xi Peng
May 2, 2016·Environmental Research·Ray Zhuangrui Chen, Ming-Hung Wong
Sep 25, 2017·Environmental Science and Pollution Research International·Peng LiangSheng-Chun Wu
Jul 19, 2017·Environmental Science and Pollution Research International·Wenzhong TangXinhui Wang
Jan 9, 2020·Environmental Science and Pollution Research International·Xin MengBaoqing Shan

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