Individual Particle Analysis of Atmospheric Aerosols at Nam Co, Tibetan Plateau

被引：62

作者：

Cong, Zhiyuan ^{[1
]}

Kang, Shichang ^{[1
,2
]}

Dong, Shuping ^{[3
]}

Zhang, Yulan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Tibetan Environm Changes & Land Surface Proce, Beijing 100085, Peoples R China

[2] Chinese Acad Sci, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China

[3] Natl Ctr Environm Anal & Measurements, Beijing 100029, Peoples R China

来源：

AEROSOL AND AIR QUALITY RESEARCH | 2009年 / 9卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Aerosols; SEM-EDX; Nam Co; Tibetan Plateau; SIZE DISTRIBUTIONS; SOUTHERN AFRICA; SULFATE; CALCIUM; DHAKA;

D O I：

10.4209/aaqr.2008.12.0064

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Twelve filter samples were sampled monthly during a continuous 1-year campaign at a remote site, Nam Co in central Tibetan Plateau. The total aerosol concentrations ranged from 0.48 mu g/m(3) to 36.11 mu g/m(3) with the annual average of 6.74 mu g/m(3), reflecting a typical background level. The composition and morphology of atmospheric aerosols with size ranging from 0.5 to 10 mu m were investigated using a scanning electron microscope coupled with energy dispersive X-ray analysis. Then aerosol particles were classified into 7 groups: soot, tar ball, aluminosilicates/quartz, calcium sulfate, Ca/Mg carbonate, Fe/Ti oxide, and biological particle. Aerosol optical properties from the sun photometer and the results obtained by SEM-EDX could support and verify each other, providing complementary information on aerosol characteristics at Nam Co. Two distinct types of air masses arriving at Nam Co correspond to different aerosol constituent, showing that the summer monsoon circulation may bring considerable pollution from South Asia, while the westerly flow dominated in winter is relative clean.

引用

页码：323 / 331

页数：9

共 36 条

[1] Spatial and seasonal distributions of carbonaceous aerosols over China [J].