GSTDTAP  > 气候变化
DOI10.1029/2018JD028671
Isotopic Composition of Gaseous Elemental Mercury in the Boundary Layer Of East China Sea
Fu, Xuewu1; Yang, Xu2; Tan, Qingyou1; Ming, Lili3; Lin, Tian1; Lin, Che-Jen1,4; Li, Xiangdong3; Feng, Xinbin1
2018-07-27
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:14页码:7656-7669
文章类型Article
语种英语
国家Peoples R China; France; USA
英文摘要

Characterizing the speciation and isotope signatures of atmospheric mercury (Hg) downwind of mainland China is critical to understanding the outflow of Hg emission and the contributing sources. In this study, we measured the concentrations of gaseous elemental mercury (GEM), particulate bound mercury, gaseous oxidized mercury, and the GEM isotopic composition in the marine boundary layer of East China Sea from October 2013 to January 2014. Mean (+/- 1 sigma) GEM, particulate bound mercury, and gaseous oxidized mercury concentrations were 2.25 +/- 1.03 ng/m(3), 26 +/- 38 pg/m(3), and 8 +/- 10 pg/m(3) respectively. Most events of elevated GEM are associated with the outflow of Hg emissions in mainland China. The 24- and 48-hr integrated GEM samples showed large variations in both delta Hg-202 (-1.63 parts per thousand to 0.34 parts per thousand) and Delta Hg-199 (-0.26 parts per thousand to -0.02 parts per thousand). GEM delta Hg-202 and Delta Hg-199 were negatively and positively correlated to its atmospheric concentrations, respectively, suggesting a binary physical mixing of regional background GEM and Hg emissions in mainland China. Using a binary mixing model, highly negative delta Hg-202 (-1.79 +/- 0.24 parts per thousand, 1 sigma) and near-zero Delta Hg-199 (0.02 +/- 0.04 parts per thousand,1 sigma) signatures for China GEM emissions are predicted. Such isotopic signatures are significantly different from those found in North America and Europe and the background global/regional atmospheric GEM pool. It is likely that emissions from industrial and residential coal combustion (lacking conventional air pollutant control devices), cement and mercury production, biomass burning, and soil emissions contributed significantly to the estimated isotope signatures of GEM emissions in China.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000441965400035
WOS关键词MASS-INDEPENDENT FRACTIONATION ; SPECIATED ATMOSPHERIC MERCURY ; FIRED POWER-PLANT ; DRY DEPOSITION ; COAL DEPOSITS ; HG ISOTOPES ; EMISSIONS ; EXCHANGE ; MODEL ; OCEAN
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/32440
专题气候变化
作者单位1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Guizhou, Peoples R China;
2.Univ Toulouse, Lab Geosci Environm Toulouse, Observ Midi Pyrenees, CNRS,IRD, Toulouse, France;
3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China;
4.Lamar Univ, Ctr Advances Water & Air Qual, Beaumont, TX 77710 USA
推荐引用方式
GB/T 7714
Fu, Xuewu,Yang, Xu,Tan, Qingyou,et al. Isotopic Composition of Gaseous Elemental Mercury in the Boundary Layer Of East China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(14):7656-7669.
APA Fu, Xuewu.,Yang, Xu.,Tan, Qingyou.,Ming, Lili.,Lin, Tian.,...&Feng, Xinbin.(2018).Isotopic Composition of Gaseous Elemental Mercury in the Boundary Layer Of East China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(14),7656-7669.
MLA Fu, Xuewu,et al."Isotopic Composition of Gaseous Elemental Mercury in the Boundary Layer Of East China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.14(2018):7656-7669.
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