Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation
	Chen, Baowei; Chen, Ping; He, Bin; Yin, Yongguang; Fang, Linchuan; Wang, Xiaowei; Liu, Hongtao; Yang, Lihua; Luan, Tiangang
刊名	MARINE POLLUTION BULLETIN
	2015-09-15
卷号	98 期号:2016-01-02 页码:40-46
关键词	Methylation Monomethylmercury Tert-butyl compounds Ultraviolet irradiation Aqueous solution
英文摘要	The methylation of mercury (Hg) is of great concern as methylmercury (MeHg), the most toxic species, is produced. This study examined the possibilities of tert-butyl compounds (tert-butyl alcohol (TBA) and tert-butyl hydroperoxide (TBH)) and other alcohols serving as methyl donors for Hg photo-methylation under light irradiation. The yield of MeHg varied among the methyl donors, and it was also significantly influenced by salinity and pH. MeHg could be generated in the presence of TBH under visible light irradiation. The hydroxyl radical ((OH)-O-center dot) was found to promote MeHg production at low levels, but degrade MeHg in excess. The photo-production of MeHg was tentatively proposed via the complexation of Hg and methyl donors, the formation of an intermediate (O-center dot(Hg)C(CH3)(3)), and the intramolecular methyl transfer from methyl donors to Hg. This study implicates photoreactions between Hg and organic pollutants in understanding the fate and transformation of Hg in the aquatic environment. (C) 2015 Elsevier Ltd. All rights reserved.
研究领域[WOS]	Environmental Sciences ; Marine & Freshwater Biology
WOS记录号	WOS:000362134100018
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32596]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
推荐引用方式 GB/T 7714	Chen, Baowei,Chen, Ping,He, Bin,et al. Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation[J]. MARINE POLLUTION BULLETIN,2015,98(2016-01-02):40-46.
APA	Chen, Baowei.,Chen, Ping.,He, Bin.,Yin, Yongguang.,Fang, Linchuan.,...&Luan, Tiangang.(2015).Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation.MARINE POLLUTION BULLETIN,98(2016-01-02),40-46.
MLA	Chen, Baowei,et al."Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation".MARINE POLLUTION BULLETIN 98.2016-01-02(2015):40-46.