期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 430, 期 -, 页码 184-192出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2012.04.075
关键词
PAHs; PCBs; Urban soils; Human health; Risk assessment
资金
- CESAM
- FCT (Fundacao para a Ciencia e Tecnologia) [POCTI/CTA/44851/2002: SOLURB, SFRH/BD/38418/2007, SFRH/BPD/35068/2007, SFRH/BPD/65410/2009]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/65410/2009, SFRH/BD/38418/2007, SFRH/BPD/35068/2007, POCTI/CTA/44851/2002] Funding Source: FCT
Urban soil quality may be severely affected by PAH and PCB contamination, impairing environmental and human health. A comprehensive study was conducted in two contrasting Portuguese urban areas (Lisbon and Viseu) in order to assess the levels of these contaminants and potential risks to human health, to identify sources and study their behavior in soils. The concentrations of PAHs and PCBs were related to the size of the city. The concentrations found in the larger city (Lisbon) were similar to other urban areas. Differences between profiles of the two urban areas were observed for both groups of contaminants, which could be attributed to differences of sources or climate. Lisbon seems to be affected by nearby sources (traffic, industry and incineration processes) whereas in the smaller city atmospheric transport may be playing an important role. Cluster analysis revealed that PAHs and PCBs were associated with anthropogenic toxic elements (Cu, Pb, Zn and Hg in Lisbon; Pb and Hg in Viseu), therefore reflecting common sources. It was also found that organic carbon was an important factor for PAHs and high chlorinated PCB retention in soils. The incremental probability of developing cancer over lifetime, based on a reasonable maximum exposure to PAHs present in Lisbon residential soils, was 9.0 x 10(-6) and 2.4 x 10(-6) for an occupational exposure, both slightly higher than the target risk of 1 x 10(-6). Similarly, the mutagenic risk of PAHs in Lisbon was 3.3 x 10(-5) for residential soils and 1.8 x 10(-6) in recreational areas. (C) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据