Heavy Metal-Polluted Aerosols Collected at a Rural Site,Northwest China  

作　　者：Xiaoyu Zhang Zhongqin Li Nozomu Takeuchi Feiteng Wang Shengjie Wang Xiaoni You Ping Zhou 

机构地区：[1]State Key Laboratory of Cryospheric Sciences,Cold and Arid Regions Environment and Engineering Research Institute,Tianshan Glaciological Station,Chinese Academy of Sciences,Lanzhou 730000,China [2]Department of Earth Sciences,Graduate School of Scienee,Chiba University,Chiba 263-8522,Japan [3]College of Geography and Environment Science,Northwest Normal University,Lanzhou 730000,China [4]Tianshui Normal University,Tianshui 741001,China

出　　处：《Journal of Earth Science》2017年第3期535-544,共10页地球科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.41201065,41121001,41261017,41171057,41161012);the fund for Creative Research Groups of China(No.41121001);the foundation for Excellent Youth Scholars of CAREERI,CAS(No.51Y251B51);the SKLCS Foundation(No.SKLCSZZ-201201-01);the National Basic Research Program of China(Nos.2010CB951003,2010CB951404);the Knowledge Innovation Project of the Chinese Academy of Sciences(No.KZCX2EW-311)

摘　　要：Daily samples of aerosol（n=27） were collected from September 21 st to October 4th, 2013 in Fukang（44.17°N, 88.45°E, 475 m a.s.l.）, Xinjiang, Northwest China. The enrichment factors（EFc） of selected 49 elements showed that the aerosols had extremely high concentrations of heavy metals, probably indicating their anthropogenic origins. Morphology of individual aerosol particles was determined by scanning electron microscopy and energy-dispersive X-ray microanalysis. Based on morphology and elemental composition, the particles were clustered into three dominant types：（Ⅰ） crustal originated particles： Si/Al-rich particles（36%） and Si/Fe-rich particles（24%）;（Ⅱ） mixed source particles; and（Ⅲ） pollution derived particles： Pb-rich particles（10%）. The backward trajectories were calculated using the HYSPLIT model, and the results indicated the different anthropogenic sources for heavy metals in Fukang aerosols. Air mass from north was identified as the most polluted source when compared to south and west.Daily samples of aerosol（n=27） were collected from September 21 st to October 4th, 2013 in Fukang（44.17°N, 88.45°E, 475 m a.s.l.）, Xinjiang, Northwest China. The enrichment factors（EFc） of selected 49 elements showed that the aerosols had extremely high concentrations of heavy metals, probably indicating their anthropogenic origins. Morphology of individual aerosol particles was determined by scanning electron microscopy and energy-dispersive X-ray microanalysis. Based on morphology and elemental composition, the particles were clustered into three dominant types：（Ⅰ） crustal originated particles： Si/Al-rich particles（36%） and Si/Fe-rich particles（24%）;（Ⅱ） mixed source particles; and（Ⅲ） pollution derived particles： Pb-rich particles（10%）. The backward trajectories were calculated using the HYSPLIT model, and the results indicated the different anthropogenic sources for heavy metals in Fukang aerosols. Air mass from north was identified as the most polluted source when compared to south and west.

关 键 词：heavy metal pollution aerosols Central Asia 

分 类 号：X513[环境科学与工程—环境工程] X53