Study of atmospheric particulate matter in Buenos Aires city

被引:89
作者
Bogo, H
Otero, M
Castro, P
Ozafrán, MJ
Kreiner, A
Calvo, EJ
Negri, RM
机构
[1] Univ Buenos Aires, INQUIMAE, Fac Ciencias Exactas & Nat, Dept Quim Inorgan Analit & Quim Fis, Buenos Aires, DF, Argentina
[2] Co Tecn Int Techint, RA-2999 Buenos Aires, DF, Argentina
[3] Univ San Martin, Escuela Ciencia & Tecnol, RA-1653 Buenos Aires, DF, Argentina
关键词
urban air pollution; atmospheric particles; carbon monoxide; atomic force microscopy; PIXE;
D O I
10.1016/S1352-2310(02)00977-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The data reported here constitute the results of the first long-term monitoring campaign of daily PM10 and PM2.5 concentration levels in Buenos Aires city. Twenty-four hour averages atmospheric concentrations of PM 10 and PM2.5 were measured (not simultaneously) at a site near downtown Buenos Aires, since December 1998-September 1999. The values of PM2.5 concentrations correlate well with the concentrations of carbon monoxide (CO) during the winter period, indicating that direct traffic emissions have an important contribution to PM2.5. The data are less correlated for the case of PM10, indicating that the sources of the coarse fraction are not only traffic emissions, with an important contribution of other sources, for example re-suspended material. Scanning electron microscopy and atomic force microscopy images of atmospheric particles on nucleopore filters are shown. Information about the ion and metal content of these particles is reported. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1135 / 1147
页数:13
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