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Mercury and methylmercury bioaccumulation in a contaminated bay TEXT SIZE: A A A
The bioaccumulation and the main source of total Hg (THg) and methylmercury (MMHg) in the deposit-feeding polychaete Neanthes japonica collected in Jinzhou Bay, China, were investigated. Compared with the historical data, THg bioaccumulation in polychaetes collected in sediment of Jinzhou Bay was distinctly higher due to higher sediment THg concentration, but MMHg bioaccumulation was significantly lower. THg accumulation in polychaetes mainly derived from its accumulation in sediment. However, MMHg bioaccumulation in polychaetes did not correlate with Hg concentration in sediment. Besides sediment ingestion, MMHg accumulation in polychaetes may partially source from the process of in vivo transformation. The in vivo Hg methylation may take place in polychaetes, according to the excellent correlation between MMHg concentration and THg and inorganic Hg concentration in polychaetes. The biochemical characters in polychaete body, the oxidation-reduction environment and the microbial activity in polychaete gut may be beneficial to in vivo Hg methylation.
 

Publication name

 MARINE POLLUTION BULLETIN, 143 134-139; 10.1016/j.marpolbul.2019.04.032 JUN 2019

Author(s)

 Xu, Zhizhen; Fan, Wenhong; Shi, Zhiwei; Tan, Cheng; Cui, Minming; Tang, Shichuan; Qiu, Guangle; Feng, Xinbin

Corresponding author(s) 

 FAN Wenhong
 fanwh@buaa.edu.cn
 Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China. 
 FENG Xinbin
 fengxinbin@vip.skleg.cn 
 Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.

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