Seasonal variation and health risk assessment of polycyclic aromatic hydrocarbons in atmospheric fine particulate matter in Changchun
To study the seasonal variation and health risk assessment of polycyclic aromatic hydrocarbons(PAHs)in atmospheric fine particulate matter(PM2.5)in Changchun,atmospheric PM2.5 samples were collected from September 2020 to April 2021.The concentration of 16 priority PAHs in PM2.5 was determined.The results showed that all of the PAHs were detected except DahA.The total mass concentration of 15 PAHs ranged from 0 to 198.00 ng/m3 with an average value of 67.80 ng/m3,presented the tendency of winter(average 71.90 ng/m3)＞spring(average 70.50 ng/m3)＞autumn(average 55.20 ng/m3).The seasonal variation of BAP toxic equivalents of PAHs was obvious,with winter(average 4.40 ng/m3)was significantly higher than autumn(average 1.26 ng/m3)and spring(average 0.38 ng/m3).The average ILCR values for adults and children in winter were 2.15 × 10-5 and 2.43 × 10-5,respectively,significantly higher than those in autumn(adults 6.18×10-6 and children 6.98×10-6)and spring(adults 1.84×10-6 and children 2.08×10-6),indicating that PAHs in atmospheric PM2.5 in winter might pose a certain carcinogenic risk to human body.
万方数据
维普
