Atmospheric BTX and polyaromatic hydrocarbons in Rio de Janeiro, Brazil

被引:64
作者
Fernandes, MB
Brickus, LSR
Moreira, JC
Cardoso, JN
机构
[1] Fdn Oswaldo Cruz, ENSP, CESTEH, Toxicol Lab, BR-21041210 Rio De Janeiro, RJ, Brazil
[2] Univ Fed Rio de Janeiro, Inst Quim, LADETEC, BR-21949900 Rio De Janeiro, RJ, Brazil
关键词
PAHs; benzo[a]pyrene; benzene; toluene; xylene; air pollution;
D O I
10.1016/S0045-6535(01)00319-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Polycyclic aromatic and monoaromatic (benzene, toluene and xylene, or BTX) hydrocarbons were monitored in Rio de Janeiro, Brazil, during the summer of 1998/1999. The levels of these aromatic chemicals decreased with distance from main roads, indicating mobile sources are the main pollutant emitters in this Latin American city. Benzo[ghi]perylene/ indeno[1,2,3-cd]pyrene and benzene/toluene ratios corroborate this idea. However, higher benzene/toluene ratios at one of the major access routes into the city suggest pollutant inputs from a nearby refinery. Literature data were reviewed in order to outline differences and similarities among sources and levels of aromatic pollutants in large urban agglomerations worldwide. Concentrations of benzo[a]pyrene and benzene, which are well-known carcinogenic chemicals, were relatively low in Rio de Janeiro. This fact was attributed to specific atmospheric conditions during the tropical summer and differences in vehicle fuel composition. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:417 / 425
页数:9
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