摘要
为研究长春大气细颗粒物(PM_(2.5))中多环芳烃(PAHs)的季节变化及健康风险评价,于2020年9月至2021年4月采集大气PM_(2.5)样品,测定PM_(2.5)中16种优先控制PAHs的浓度。结果表明,除二苯并(a,h)蒽外,其他15种PAHs均有检出,总质量浓度在0~198.00 ng/m^(3),平均值为67.80 ng/m^(3),呈冬季(平均值71.90 ng/m^(3))>春季(平均值70.50 ng/m^(3))>秋季(平均值55.20 ng/m^(3))的特征,PAHs的苯并(a)芘毒性当量季节变化明显,冬季(平均值4.40 ng/m^(3))显著高于秋季(平均值1.26 ng/m^(3))和春季(平均值0.38 ng/m^(3))。成人和儿童在冬季的平均终生致癌风险(ILCR)值分别为2.15×10^(-5)、2.43×10^(-5),显著高于秋季(成人6.18×10^(-6)、儿童6.98×10^(-6))和春季(成人1.84×10^(-6)、儿童2.08×10^(-6)),冬季大气PM_(2.5)中PAHs可能对人体存在一定致癌风险。
To study the seasonal variation and health risk assessment of polycyclic aromatic hydrocarbons(PAHs)in atmospheric fine particulate matter(PM_(2.5))in Changchun,atmospheric PM_(2.5) samples were collected from September 2020 to April 2021.The concentration of 16 priority PAHs in PM_(2.5) 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/m^(3) with an average value of 67.80 ng/m^(3),presented the tendency of winter(average 71.90 ng/m^(3))>spring(average 70.50 ng/m^(3))>autumn(average 55.20 ng/m^(3)).The seasonal variation of BAP toxic equivalents of PAHs was obvious,with winter(average 4.40 ng/m^(3))was significantly higher than autumn(average 1.26 ng/m^(3))and spring(average 0.38 ng/m^(3)).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 PM_(2.5) in winter might pose a certain carcinogenic risk to human body.
作者
赵东洋
安淼
刘宝林
于泳
ZHAO Dongyang;AN Miao;LIU Baolin;YU Yong(College of Environmental Science and Engineering,Liaoning Technical University,Fuxin Liaoning 123000;Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Changchun Jilin 130102;College of Chemistry,Changchun Normal University,Changchun Jilin 130032)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2024年第2期226-232,共7页
Environmental Pollution & Control
基金
长春师范大学自然科学基金资助项目(长师大自科合字[2019]第009号)。
关键词
大气颗粒物
多环芳烃
季节变化
健康风险评价
atmospheric particulate matter
polycyclic aromatic hydrocarbons
seasonal variation
health risk assessment
