气候变化领域集成服务门户(CCPortal): Seasonal Variation of Mercury and Its Isotopes in Atmospheric Particles at the Coastal Zhongshan Station, Eastern Antarctica

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DOI	10.1021/acs.est.0c04462
	Seasonal Variation of Mercury and Its Isotopes in Atmospheric Particles at the Coastal Zhongshan Station, Eastern Antarctica
	Li, Chuanjin; Chen, Jiubin; Angot, Helene; Zheng, Wang; Shi, Guitao; Ding, Minghu; Du, Zhiheng; Zhang, Qianggong; Ma, Xiangyu; Kang, Shichang; Xiao, Cunde; Ren, Jiawen; Qin, Dahe
发表日期	2020
ISSN	0013-936X
起始页码	11344
结束页码	11355
卷号	54 期号:18
英文摘要	Mercury (Hg) is a globally spread trace metal due to its long atmospheric residence time. Yet, our understanding of atmospheric processes (e.g., redox reactions and deposition) driving Hg cycling is still limited, especially in polar regions. The Antarctic continent, by virtue of its remoteness, is the perfect location to investigate Hg atmospheric processes in the absence of significant local anthropogenic impact. Here, we present the first 2 year record (2016-2017) of total suspended particulate mercury (PHg) concentrations along with a year-round determination of an Hg stable isotopic composition in particles collected at Zhongshan Station (ZSS), eastern Antarctic coast. The mean PHg concentration is 21.8 +/- 32.1 pg/m(3), ranging from 0.9 to 195.6 pg/m(3), and peaks in spring and summer. The negative mass-independent fractionation of odd Hg isotopes (odd-MIF, average -0.38 +/- 0.12% for Delta Hg-199) and the slope of Delta Hg-199/Delta Hg-201 with 0.91 +/- 0.12 suggest that the springtime isotope variation of PHg is likely caused by in situ photo-oxidation and reduction reactions. On the other hand, the increase of PHg concentrations and the observed odd-MIF values in summer are attributed to the transport by katabatic winds of divalent species derived from the oxidation of elemental Hg in the inland Antarctic Plateau.
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158816
作者单位	Chen, JB (corresponding author), Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China.
推荐引用方式 GB/T 7714	Li, Chuanjin,Chen, Jiubin,Angot, Helene,et al. Seasonal Variation of Mercury and Its Isotopes in Atmospheric Particles at the Coastal Zhongshan Station, Eastern Antarctica[J],2020,54(18).
APA	Li, Chuanjin.,Chen, Jiubin.,Angot, Helene.,Zheng, Wang.,Shi, Guitao.,...&Qin, Dahe.(2020).Seasonal Variation of Mercury and Its Isotopes in Atmospheric Particles at the Coastal Zhongshan Station, Eastern Antarctica.ENVIRONMENTAL SCIENCE & TECHNOLOGY,54(18).
MLA	Li, Chuanjin,et al."Seasonal Variation of Mercury and Its Isotopes in Atmospheric Particles at the Coastal Zhongshan Station, Eastern Antarctica".ENVIRONMENTAL SCIENCE & TECHNOLOGY 54.18(2020).