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Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China
Xu, Hongmei1,2,4; Sonke, Jeroen E.3; Guinot, Benjamin4; Fu, Xuewu3,6; Sun, Ruoyu3,5; Lanzanova, Aurelie3; Candaudap, Frederic3; Shen, Zhenxing1; Cao, Junji2
2017-04-04
发表期刊ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷号51期号:7页码:3759-3766
文章类型Article
摘要We present a 3-year time series of lead (Pb) and mercury (Hg) concentrations and isotope signatures in total suspended particulate (TSP) matter, and as total gaseous Hg (TGM) in)(fan, Northwestern China. Mean concentrations of TSP (299 +/- 120 mu g m(-3)), Pb-TSP (0.33 +/- 0.15 mu g m(-3)) and: Hg-Tsp. (0.64 +/- 0.54 ng m(-3)), and TGM (5.7 +/- 2.7 ng m(-3)) were elevated. We find that atmospheric Pb levels in winter in Xi'an have decreased by 4.6% per year since 2003, yet remain elevated relative to air quality guidelines and therefore a major health concern. delta Hg-202(Tsp) and Delta Hg-199(Tsp) averaged -0.80 +/- 0.30 parts per thousand (1 sigma) and -0.02 +/- 0.10 parts per thousand (1 sigma) and delta Hg-202(TGM) and Delta Hg-199(TGM) averaged -0.08 +/- 0.41 parts per thousand (10) and 0.00 +/- 0.04 parts per thousand (1 sigma). Relative to raw coal from Shaanxi and surrounding provinces, delta Hg-202(TSP) is enriched in the light Hg isotopes, whereas delta Hg-202(TGM) is enriched in the heavy isotopes. TSP and TGM Delta Hg-199 signatures are indistinguishable from raw coal, indicating little photochemical mass independent fractionation of atmospheric Hg in the near-field urban-industrial environment. delta Hg-202(TGM) correlates significantly with TGM levels (r(2) = 0.3, p < 0.01) and likely reflects binary mixing of local industrial TGM emissions with global background TGM.
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1021/acs.est.6b06145
关键词[WOS]GASEOUS ELEMENTAL MERCURY ; LEADED GASOLINE ; PARTICULATE MATTER ; COAL DEPOSITS ; AMBIENT AIR ; URBAN ; EMISSIONS ; SHANGHAI ; METALS ; RATIOS
收录类别SCI
语种英语
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS类目Engineering, Environmental ; Environmental Sciences
WOS记录号WOS:000398646500020
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5490
专题粉尘与环境研究室
作者单位1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian, Peoples R China
3.Univ Toulouse, CNRS, IRD, Observ Midi Pyrenees,Lab Geosci Environm Toulouse, Toulouse, France
4.Univ Toulouse, CNRS, UPS, Lab Aerol, Toulouse, France
5.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
6.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China
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Xu, Hongmei,Sonke, Jeroen E.,Guinot, Benjamin,et al. Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2017,51(7):3759-3766.
APA Xu, Hongmei.,Sonke, Jeroen E..,Guinot, Benjamin.,Fu, Xuewu.,Sun, Ruoyu.,...&Cao, Junji.(2017).Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(7),3759-3766.
MLA Xu, Hongmei,et al."Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.7(2017):3759-3766.
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