globalchange  > 过去全球变化的重建
DOI: 10.1016/j.marpolbul.2015.07.015
Scopus记录号: 2-s2.0-84941313916
论文题名:
Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation
作者: Chen B.; Chen P.; He B.; Yin Y.; Fang L.; Wang X.; Liu H.; Yang L.; Luan T.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 98, 期:2018-01-02
起始页码: 40
结束页码: 46
语种: 英语
英文关键词: Aqueous solution ; Methylation ; Monomethylmercury ; Tert-butyl compounds ; Ultraviolet irradiation
Scopus关键词: Alcohols ; Alkylation ; Irradiation ; Light ; Mercury (metal) ; Methylation ; Organic pollutants ; Solutions ; Water pollution ; Aquatic environments ; Mercury methylation ; Monomethylmercury ; Tert-butyl alcohols ; Tert-butyl compounds ; Tert-butylhydroperoxide ; Ultraviolet irradiations ; Visible-light irradiation ; Mercury compounds ; environmental chemical ; hydroxyl radical ; methylmercury ; tert butyl alcohol derivative ; tert butyl hydroperoxide derivative ; unclassified drug ; mercury ; methylmercury derivative ; solution and solubility ; water pollutant ; aquatic environment ; aqueous solution ; environmental fate ; hydroxyl radical ; mercury (element) ; methylation ; methylmercury ; organic pollutant ; pH ; salinity ; transformation ; ultraviolet radiation ; aquatic environment ; Article ; chemical analysis ; chemical procedures ; chemical reaction ; chemical structure ; concentration (parameters) ; electron spin resonance ; pH ; physical parameters ; salinity ; ultraviolet irradiation ; analysis ; chemistry ; light ; metabolism ; methylation ; solution and solubility ; water pollutant ; Hydrogen-Ion Concentration ; Hydroxyl Radical ; Light ; Mercury ; Methylation ; Methylmercury Compounds ; Salinity ; Solutions ; Water Pollutants, Chemical
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science ; Earth and Planetary Sciences: Oceanography ; Environmental Science: Pollution
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) 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(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. © 2015 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85971
Appears in Collections:过去全球变化的重建
全球变化的国际研究计划

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作者单位: Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, School of Marine Sciences, Sun Yat-Sen University, Guangzhou, China; MOE Key Laboratory of Aquatic Product Safety, Instrumental Analysis and Research Center/School of Life Sciences, Sun Yat-Sen University, Guangzhou, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center of Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A and F University, Yangling, China

Recommended Citation:
Chen B.,Chen P.,He B.,et al. Identification of mercury methylation product by tert-butyl compounds in aqueous solution under light irradiation[J]. Marine Pollution Bulletin,2015-01-01,98(2018-01-02)
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