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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
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume51Issue:7Pages:3759-3766
SubtypeArticle
AbstractWe 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 HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1021/acs.est.6b06145
WOS KeywordGASEOUS ELEMENTAL MERCURY ; LEADED GASOLINE ; PARTICULATE MATTER ; COAL DEPOSITS ; AMBIENT AIR ; URBAN ; EMISSIONS ; SHANGHAI ; METALS ; RATIOS
Indexed BySCI
Language英文
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000398646500020
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5490
Collection粉尘与环境研究室
Affiliation1.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
Recommended Citation
GB/T 7714
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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