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Mass-Independent Fractionation of Mercury Stable Isotopes Reveals Atmospheric Transport Impact on Particulate-Bound Mercury

文献类型：期刊论文

作者Qin, Xuechao4,5; Dong, Xinyuan1; Liu, Congqiang1; Wei, Rongfei4; Tao, Zhenghua4; Zhang, Hua2; Guo, Qingjun3,4
刊名GEOPHYSICAL RESEARCH LETTERS
出版日期2025-09-06
卷号52期号:17页码:e2025GL116080
关键词particulate-bound mercury mercury isotopes mass-independent fractionation mercury pollution atmosphere transport
ISSN号0094-8276
DOI10.1029/2025GL116080
产权排序1
文献子类Article
英文摘要Atmospheric particulate-bound mercury (PBM), adsorbed onto aerosols like TSP and PM2.5 (PBMTSP and PBM2.5), is crucial to the Hg biogeochemical cycle. However, the mechanisms underlying the formation and transportation of PBM remain unclear. This study aims to explore these mechanisms by utilizing Hg isotopes and collecting PBMTSP and PBM2.5 samples at five distinct sites in North China. Both PBMTSP and PBM2.5 exhibited positive odd and even mass-independent fractionation (MIF), with Delta 199Hg values in PBM2.5 enriched by 0.25 +/- 0.35 parts per thousand relative to PBMTSP. The slopes between Delta 199Hg and Delta 201Hg, along with sulfur MIF and backward trajectories, suggest that intense photoreduction reactions during long-distance and high-altitude transport are the primary driver of the elevated Delta 199Hg in fine particulate matter. Importantly, significant positive MIF signatures can occur not only in remote areas but also in anthropogenic Hg emission regions, underscoring the underestimated role of atmospheric transport, particularly on clean days.
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WOS关键词SOURCE IDENTIFICATION ; AIRBORNE PARTICLES ; SPECIATED MERCURY ; EVEN ; HG ; COMBUSTION ; SIGNATURES ; HEALTH ; SITES ; CHINA
WOS研究方向Geology
语种英语
WOS记录号WOS:001564835100001
出版者AMER GEOPHYSICAL UNION
源URL[http://ir.igsnrr.ac.cn/handle/311030/216165]  
专题资源利用与环境修复重点实验室_外文论文
通讯作者Guo, Qingjun
作者单位1.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China;
2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China;
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Beijing 100101, Peoples R China;
5.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr Resources & Environm, Beijing, Peoples R China;
推荐引用方式
GB/T 7714		 Qin, Xuechao,Dong, Xinyuan,Liu, Congqiang,et al. Mass-Independent Fractionation of Mercury Stable Isotopes Reveals Atmospheric Transport Impact on Particulate-Bound Mercury[J]. GEOPHYSICAL RESEARCH LETTERS,2025,52(17):e2025GL116080.
APA Qin, Xuechao.,Dong, Xinyuan.,Liu, Congqiang.,Wei, Rongfei.,Tao, Zhenghua.,...&Guo, Qingjun.(2025).Mass-Independent Fractionation of Mercury Stable Isotopes Reveals Atmospheric Transport Impact on Particulate-Bound Mercury.GEOPHYSICAL RESEARCH LETTERS,52(17),e2025GL116080.
MLA Qin, Xuechao,et al."Mass-Independent Fractionation of Mercury Stable Isotopes Reveals Atmospheric Transport Impact on Particulate-Bound Mercury".GEOPHYSICAL RESEARCH LETTERS 52.17(2025):e2025GL116080.

入库方式： OAI收割

来源：地理科学与资源研究所

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