沈阳市大气PM_2.5中PAHs的污染水平及健康风险评估

【摘要】 2020年12月、2021年4月在沈阳市不同功能区分别采集采暖期和非采暖期大气PM_2.5样品进行分析。结果表明，沈阳市PM_2.5中14种多环芳烃（PAHs）主要是中低环的Fla,Pyr,Phe,Chr,Flu；采暖期PAHs浓度平均值为95.0 ng/m³，是非采暖期的2.7倍，其中工业区和居民区的浓度最高。沈阳市的终身致癌危险度在10^-6～10^-4范围内，说明存在潜在致癌风险。更多还原

【Abstract】 Atmospheric PM_2.5 samples were collected in different functional areas of Shenyang in December 2020 and April 2021 for the heating and non-heating periods,respectively.The results showed that the 14 PAHs in PM_2.5 in Shenyang were mainly Fla,Pyr,Phe,Chr and Flu with the middle or low rings;the average PAHs concentration in the heating period was 95.0 ng/m³,which was 2.7 times higher than that in the non-heating period,with the highes concentrations in industrial and residential areas.The lifetime carcinogenic risk in Shenyang was in the range o10^-6～10^-4,indicating a potential carcinogenic risk.更多还原