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Chemistry and environmental significance of aerosols collected in the eastern Tianshan
Received:December 28, 2016  Revised:May 09, 2017  Click here to download the full text
Citation of this paper:XiaoYu Zhang,ShengJie Wang,Xin Zhang,Ping Zhou,Shuang Jin,ZhongQin Li,Nozomu Takeuchi,2017.Chemistry and environmental significance of aerosols collected in the eastern Tianshan.Sciences in Cold and Arid Regions,9(5):455~466.
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Author NameAffiliationE-mail
XiaoYu Zhang State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China zhangxiaoyu@lzb.ac.cn 
ShengJie Wang College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China  
Xin Zhang College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China  
Ping Zhou State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China  
Shuang Jin State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China  
ZhongQin Li State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China;College of Geography and Environment Science, Northwest Normal University, Lanzhou, Gansu 730070, China  
Nozomu Takeuchi Department of Earth Sciences, Graduate School of Science, Chiba University, 1-33, Yayoicho, Inage-ku, Chiba-city, Chiba 263-8522, Japan  
基金项目:This research was jointly supported by the National Natural Science Foundation of China (41201065, 41121001, 41261017, 41171057, 41161012); the Funds for Creative Research Groups of China (41121001); the foundation for Excellent Youth Scholars of CAREERI, CAS (51Y251B51); the SKLCS foundation (Grant No. SKLCSZZ-2012-01-01); the National Basic Research Program of China (2010CB951003, 2010CB951404); and the Knowledge Innovation Project of the Chinese Academy of Sciences (KZCX2-EW-311). We would like to thank Wang Wenbin, Xia Mingying, She Yuanyang, Li Xuliang, and Jin Shuang for the sampling; and Zhu Yuman, Bao Qiufang, and Liu Yaping for the chemical analysis.
 
Abstract:Aerosol samples were collected at altitudes from 584 m a.s.l. to 3,804 m a.s.l. at seven sites of the eastern Tianshan. The occurrence, distribution, and possible sources of 47 trace metals-including alkali metals and alkali earth metals, transition metals, lanthanoids, and heavy metals-were investigated. It was found that four sampling sites (Shuinichang, 1,691 m a.s.l.; Urumqi City, 809 m a.s.l.; FuKang Station, 584 m a.s.l.; and Bogeda Glacier No. 4, 3,613 m a.s.l.) were contaminated mainly by heavy metals. Other three high-altitude sites (Urumqi Glacier No. 1, 3,804 m a.s.l.; WangFeng road-maintenance station, 3,039 m a.s.l.; and Tianshan Glaciology Station, 2,135 m a.s.l.) were not polluted. The aerosol particles were clustered into two dominant types:crust-originated particles and pollution-derived particles. Aerosols from UG1, WF, and TGS were characterized by crust-originated particles such as clay, plagioclase, dolomite, alkali feldspar, and biotite; while those from SNC, Urumqi, FK, and BG4 were characterized by high content of Cl-rich particles, S-rich particles, and soot. The backward-trajectories results indicated that air masses arriving at SNC, Urumqi, FK, and BG4 were identified as the more polluted source, when compared to the short-range air mass transport from the North to UGI and WF. Relatively lower altitude, as well as terrain blocking, might be another important reason for the gradient difference in pollution influence among these seven places in the Urumqi River Basin.
keywords:heavy-metal pollution  aerosols  central Asia
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