New insights into the chemical forms of extremely high methylmercury in songbird feathers from a contaminated site | |
Zhidong Xu; Kasun S. Abeysinghe; Xiaohang Xu; Chunhao Gu; Longchao Liang; Qinhui Lu; Yubo Zhang; Lirong Zheng; Wen-Xiong Wang; Guangle Qiu | |
刊名 | Chemosphere
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2019 | |
卷号 | 225页码:803-809 |
关键词 | Songbird Feathers me hg chemical Forms speciation xanes |
英文摘要 | The chemical forms of mercury (Hg), particularly methylmercury (MeHg), in songbird feathers from an abandoned mining region were analyzed via X-ray absorption near-edge structure analysis (XANES). In feathers, proportions of MeHg as total mercury (75.6–100%) quantified by the XANES were directly comparable to the chemical extraction values (74.1–95.9%). Most of MeHg were bound with cysteine (Cys) and reduced glutathione (GSH), whereas inorganic mercury (IHg) was mainly bound with GSH. These results were consistent with those found in fish muscles and human hairs of both fish consumers and occupational Hg exposure populations. Our study suggested that chemical forms and speciation of Hg were highly dependent on the exposure sources and food consumption, respectively. Bird feathers were able to selectively accumulate MeHg due to their special binding ways. However, detailed mechanisms of Hg accumulation in bird feathers remain to be further elucidated. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10210] ![]() |
专题 | 地球化学研究所_环境地球化学国家重点实验室 |
作者单位 | 1.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China 2.College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, China 3.Department of Ecosystems Science and Management, University of Wyoming, 82071, United States 4.University of Chinese Academy of Sciences, Beijing, 100049, China 5.State Key laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China 6.Department of Ocean Science, Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong 7.Department of Agricultural Sciences, Anshun College, Anshun, 561000, China |
推荐引用方式 GB/T 7714 | Zhidong Xu;Kasun S. Abeysinghe;Xiaohang Xu;Chunhao Gu;Longchao Liang;Qinhui Lu;Yubo Zhang;Lirong Zheng;Wen-Xiong Wang;Guangle Qiu. New insights into the chemical forms of extremely high methylmercury in songbird feathers from a contaminated site[J]. Chemosphere,2019,225:803-809. |
APA | Zhidong Xu;Kasun S. Abeysinghe;Xiaohang Xu;Chunhao Gu;Longchao Liang;Qinhui Lu;Yubo Zhang;Lirong Zheng;Wen-Xiong Wang;Guangle Qiu.(2019).New insights into the chemical forms of extremely high methylmercury in songbird feathers from a contaminated site.Chemosphere,225,803-809. |
MLA | Zhidong Xu;Kasun S. Abeysinghe;Xiaohang Xu;Chunhao Gu;Longchao Liang;Qinhui Lu;Yubo Zhang;Lirong Zheng;Wen-Xiong Wang;Guangle Qiu."New insights into the chemical forms of extremely high methylmercury in songbird feathers from a contaminated site".Chemosphere 225(2019):803-809. |
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