Characterisation of aerosol particles in the Sao Paulo Metropolitan Area

被引：22

作者：

de Miranda, RM

Andrade, MD

Worobiec, A

Van Grieken, R

机构：

[1] Univ Sao Paulo, Dept Atmospher Sci, Inst Astron Geophys & Atmospher Sci, BR-05508900 Sao Paulo, Brazil

[2] Univ Instelling Antwerp, Dept Chem, B-2610 Wilrijk, Belgium

来源：

ATMOSPHERIC ENVIRONMENT | 2002年 / 36卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

atmospheric aerosols; sources of air pollution; trace elements; micro analysis techniques; urban atmosphere;

D O I：

10.1016/S1352-2310(01)00363-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aerosol samples were collected in the Sao Paulo Metropolitan Area, Brazil, during two periods (winter and summer) for fine and coarse particles; they were analysed by gravimetry, scanning electron microscopy, particle induced X-ray emission (PIXE) and electron probe X-ray micro analysis (EPXMA) in order to investigate the mass concentration, morphology and physico-chemical properties of the particles. The gravimetry and PINE results confirmed that the aerosol concentration is higher in winter than in summer, as expected from the climatological conditions (dry winter and humid summer). Hierarchical cluster analysis of the EPXMA results showed the presence of metal compounds, silicon-rich particles, sulphates, carbonates, chlorides, organics and biogenic particles. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：345 / 352

页数：8

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