摘要
BTEX 的一个监视运动(苯，甲苯， ethylbenzene ， o-m-andp-xylene )附近被执行在有在这种城市的 sites.Sampling 的目的 toverify 空气质量的那不勒斯的城市的区域的二扇隧道门用活跃 adsorptiontechnique.Sampling 时间被执行是 1 h.Ambient 温度和交通流动大小被带 outduring 各个采样 operation.The 结果显示平均的苯集中在 bothsites 超过 t 建立的 10 mug/Nm3
A monitoring campaign of BTEX （benzene, toluene, ethylbenzene, o- m- and p-xylene） was carried out nearby two tunnel portals in the urban area of Naples with the aim to verify air quality in this kind of urban sites. Sampling was carried out using the active adsorption technique. Sampling time was 1 h. Ambient temperature and traffic flow measurements were carried out during each sampling operation. The results indicate that average benzene concentrations at both sites exceed the limit value of 10 μg/Nm^3 established by the European Community （EC） （Dir. 2000/69）. Concentration levels of other BTEX are relatively high as well. A correlation between BTEX concentration and two wheeler vehicle flow was observed.
关键词
公路交通隧道
入口附近
空气质量
BTEX
监测
air quality monitoring
BTEX
urban area
active adsorption sampling
tunnel
