Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China

doi:10.1021/acs.est.6b06145

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	Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China
	Cao, Junji 3; Xu, Hongmei 2,3,5; Sonke, Jeroen E.4; Guinot, Benjamin 5; Sun, Ruoyu 4,6; Fu, Xuewu 1,4; Lanzanova, Aurelie 4; Candaudap, Frederic 4; Shen, Zhenxing 2
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2017-04-04
卷号	51 期号:7 页码:3759-3766
DOI	10.1021/acs.est.6b06145
文献子类	Article
英文摘要	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关键词	GASEOUS ELEMENTAL MERCURY ; LEADED GASOLINE ; PARTICULATE MATTER ; COAL DEPOSITS ; AMBIENT AIR ; URBAN ; EMISSIONS ; SHANGHAI ; METALS ; RATIOS
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000398646500020
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5490]
专题	地球环境研究所_粉尘与环境研究室
作者单位	1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Peoples R China 2.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian, Peoples R China 4.Univ Toulouse, CNRS, IRD, Observ Midi Pyrenees,Lab Geosci Environm Toulouse, Toulouse, France 5.Univ Toulouse, CNRS, UPS, Lab Aerol, Toulouse, France 6.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Cao, Junji,Xu, Hongmei,Sonke, Jeroen E.,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	Cao, Junji.,Xu, Hongmei.,Sonke, Jeroen E..,Guinot, Benjamin.,Sun, Ruoyu.,...&Shen, Zhenxing.(2017).Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China.ENVIRONMENTAL SCIENCE & TECHNOLOGY,51(7),3759-3766.
MLA	Cao, Junji,et al."Seasonal and Annual Variations in Atmospheric Hg and Pb Isotopes in Xi'an, China".ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.7(2017):3759-3766.