鞍山市城区采暖期大气PM_(2.5)中PAHs的污染特征研究

通过对鞍山市(1个工业区、2个工业区周边、3个居住区、1个对照点)2015年1月采暖期大气PM_(2.5)中多环芳烃(PAHs)的监测,采用BaP当量致毒系数TEF,分析了鞍山市大气PM_(2.5)中典型PAHs毒性当量分布特征。研究表明,鞍山市大气PM2.5中工业区及工业区周边Ba P毒性当量浓度要远高于居住区和对照点,污染物主要由4~6环的PAHs组成,很强致癌BaP当量浓度为9.351~38.59 ng/m3。

Research of Pollution Characteristics of PAHs in PM2.5 in Anshan During Heating Period

The polycyclic aromatic hydrocarbons (PAHs) in atmosphere PM2.5 of Anshan city (one industrial zone,two indus-trial zone surroundings ,three residential areas and one control point ) were monitored in January 2015 .Adopted the BaP equiv-alent toxic coefficient ( TEF) ,analyzed the toxic equivalent distribution characteristics of PAHs in atmosphere of Anshan .The results showed that the BaP toxic equivalent concentration in atmosphere PM 2.5 of the industrial zone and the industrial zone surrounding was much higher than the residential areas and the control points .The pollutant was mainly composed of PAHs which contains 4~6 rings.The strongly carcinogenic BaP equivalent concentration was ranged from 9.351 ng/m3 to 38.59 ng/m3 .