摘要
分析并讨论了杭州市大气中PAHs的浓度、存在形态及其与车流量、气温、风速、NOx、SO2、总悬浮微粒(TSP)浓度之间的关系.结果表明,杭州市城区交通干线空气中PAHs污染十分严重,9种PAHs含量平均达339—1382μg/m3,其主要排放源为汽车尾气.
The concentration and occurrence of PAHs in the air of Hangzhou were determined. Relationships between PAHs' concentration and forms of occurrence in air with traffic intensity, wind velocity, temperature and concentrations of NO x ,SO\-2,TSP were evaluated. The results indicated that the PAHs pollution of the traffic street air is very serious and the total sum of nine PAHs, on the average, are 3 39—13 82?μg/m\+3; communication is the main source of PAHs in the traffic streets air. The correlation between the concentration variation of PAHs and NO x in the air is significant;but as for the SO\-2, the correlation is weak.
出处
《环境科学学报》
CAS
CSCD
北大核心
2000年第2期183-186,共4页
Acta Scientiae Circumstantiae
基金
浙江省科技计划项目! (编号 :97 2 0 87)
关键词
多环芳烃
空气污染
城市交通
大气污染
污染源
polycyclic aromatic hydrocarbons
air pollution
city communication pollution
