【摘要】 为了解城市大气可吸入颗粒物污染状况,对抚顺市望花区2013年4、7、10、12月进行了四次大气采样,分别代表春、夏、秋、冬四个季节,采用气质联用技术分析了大气细颗粒物PM 2.5中美国优先控制的16种PAHs的含量。结果表明,PAHs总浓度年均值为712.4 ng/m3,冬季浓度最高为2 306.4 ng/m3,夏季最低为63.5 ng/m3,其中冬季的苯并[α]芘超标2.2倍,表明抚顺市望花区大气PM2.5中PAHs污染较重,且冬季明显高于其它季节。更多还原

【Abstract】 To understand the pollution of inhalable particles in city,then sampled four times in Fushun Wanghua district in April,July,October and December 2013,representing spring,summer,autumn and winter four seasons. And the 16 polycyclic aromatic hydrocarbons( PAHs) in ambient PM 2. 5,which are controlled at first in the United States were studied quantitatively by GC /MS. The result showed that the annual average concentration of the total PAHs was 712. 4 ng /m3,the concentration in winter was the highest,which was 2 306. 4 ng /m3,and the concentration in summer was the lowest,which was63.5 ng/m3. And the BaP in PAHs in winter was 2. 2 times than standard one. All reflects the fact that the pollution of PAHs in ambient PM 2. 5 was heavier,and winter was significantly higher than other seasons.更多还原