Assessment of the impact of the vehicular traffic on BTEX concentration in ring roads in urban areas of Bari (Italy)

被引:104
作者
Caselli, Maurizio [1 ]
de Gennaro, Gianluigi [1 ,2 ]
Marzocca, Annalisa [2 ]
Trizio, Livia [1 ,2 ]
Tutino, Maria [1 ]
机构
[1] Univ Bari, Dipartimento Chim, I-70126 Bari, Italy
[2] Univ Bari, Spin Off, LEnviroS Srl, I-70126 Bari, Italy
关键词
Diffusive samplers; Vehicular traffic source; BTEX; High resolution monitoring; VOLATILE ORGANIC-COMPOUNDS; NONMETHANE HYDROCARBONS NMHC; AIR-POLLUTION; AMBIENT AIR; BENZENE; EXPOSURE; ETHYLBENZENE; RATS;
D O I
10.1016/j.chemosphere.2010.07.033
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A BTEX monitoring campaign, consisting of two weekly periods, was carried out in Bari, south-eastern Italy, in order to evaluate the impact of the vehicular traffic on the air quality at the main access roads of the city. Twenty-one sampling sites were selected, the pollution produced by the traffic in the vicinity of all exits from the ring road and some access roads to the city, those with higher traffic density, were monitored Contemporarily the main meteorological parameters (ambient temperature, wind, atmospheric pressure and natural radioactivity) were investigated It was found that in the same traffic conditions, barriers, buildings and local meteorological conditions can have important effects on the atmospheric dispersion of pollutants. This situation is more critical in downtown where narrow roads and high buildings avoid an efficient dispersion producing higher levels of BTEX. High spatial resolution monitoring allowed both detecting the most critical areas of the city with high precision and obtaining information on the mean level of pollution, meaning air quality standard of the city. The same concentration pattern and the correlation among BTEX levels in all sites confirmed the presence of a single source, the vehicular traffic, having a strong impact on air quality. (C) 2010 Elsevier Ltd All rights reserved.
引用
收藏
页码:306 / 311
页数:6
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