摘要
2004年冬季对上海市交通干道附近空气中苯系物的浓度水平进行了监测,并采用气相色谱法进行分析.结果表明,采样期间大气中苯、甲苯、乙苯、二甲苯的浓度分别为1.77～27.7μg/m^3、7.29～195μg/m^3、3.11～40.2μg/m^3、4.49～82.4μg/m^3.每日6：30～9：30和15：30～19：00两个时段苯系物的浓度要高于中午时间的浓度,与国内其他城市相比,上海市甲苯的浓度要高,浓度水平要远远高于国外城市的测定结果.苯系物的浓度受风速和风向影响较大.提出了制订空气中苯系物的排污清单和加强机动车尾气中苯系物控制的建议.
The levels of benzene, toluene, ethylbenzene and xylene （BTEX） in ambient air around main traffic road of Shanghai were monitored in wintertime of 2004. The results indicated that the concentrations of benzene, toluene , ethylbenzene and xylene were in ranges of 1.77 - 27.7μg/m^3 ,7.29 - 195μg/m^3 ,3.11 - 40.2μg/m^3 and 4.49 - 82.4μg/m^3 respectively. The concentrations in both spells of 6：30 - 9：30 and 15：30 - 19：00 were higher than that at noon every day. The toluene concentration in Shanghai was relatively high by comparison with other cities in China, while much higher than that in most of foreign cities. It was also found that BTEX concentrations changed greatly with the wind speed and wind direction. More efforts should be made to BTEX emission inventory and BTEX control over vehicle exhaust emission.
出处
《中国环境监测》
CAS
CSCD
北大核心
2006年第2期52-55,共4页
Environmental Monitoring in China
关键词
苯系物
空气污染
交通干道
上海
BTEX
Air pollution
Main traffic road
Shanghai
