长春市秋、冬季大气PM_(2.5)中多环芳烃污染特征及致癌风险评价  

Pollution Characteristics and Cancer Risk Assessment of Polycyclic Aromatic Hydrocarbons(PAHs) in Atmospheric PM_(2.5) During Autumn and Winter in Changchun

作　　者：罗馨雨 刘宝林(指导) 刘思序 尹方圆 袁琴 马丽丽 LUO Xin-yu;LIU Bao-lin;LIU Si-xu;YIN Fang-yuan;YUAN Qin;MA Li-li(College of Chemistry,Changchun Normal University,Changchun 130032,China)

机构地区：[1]长春师范大学化学学院,吉林长春130032

出　　处：《长春师范大学学报》2023年第2期191-195,共5页Journal of Changchun Normal University

基　　金：吉林省大学生创新创业训练计划项目“长春市大气PM_(2.5)中重金属的污染特征分析”(S202110205053)。

摘　　要：为了解长春市秋、冬季大气PM_(2.5)中多环芳烃(polycyclic aromatic hydrocarbons,PAHs)的污染特征,本研究采集了2020年9至12月10份大气PM_(2.5)样品,采用气相色谱-质谱法分析PM_(2.5)中多环芳烃的浓度。结果表明,采样期间7种多环芳烃的平均浓度由大到小依次是菲(2.49 ng/m^(3))、荧蒽(1.51 ng/m^(3))、苯并[g,h,i]苝(0.96 ng/m^(3))、苯并[k]荧蒽(0.74 ng/m^(3))、苯并[a]芘(0.68 ng/m^(3))、茚并芘(0.66 ng/m^(3))、蒽(0.23 ng/m^(3))。3环多环芳烃占总多环芳烃含量比例较高。燃煤和机动车尾气是长春市大气PM_(2.5)中多环芳烃的主要来源。长春市大气PM_(2.5)中多环芳烃的毒性当量均没有超过国家苯并[a]芘日均限值。长春市大气PM_(2.5)中多环芳烃对成人和儿童的终身致癌风险较低。In order to understand the pollution characteristics of polycyclic aromatic hydrocarbons(PAHs)in PM_(2.5)during autumn and winter seasons in Changchun,PM_(2.5)samples were collected from September to December in 2020.The concentrations of 7 PAHs were determined by gas chromatography-mass spectrometry(GC-MS).The results showed that the mean concentrations of 7 PAHs ranked in the order of phenanthrene(PHE)(2.49 ng/m^(3)),fluoranthene(FLA)(1.51 ng/m^(3)),benzo[g,h,i]perylene(BghiP)(0.96 ng/m^(3)),benzo[k]fluoranthene(BkF)(0.74 ng/m^(3)),benzo[a]pyrene(BaP)(0.68 ng/m^(3)),indenopyrene(INcdP)(0.66 ng/m^(3)),anthracene(ANT)(0.23 ng/m^(3)).The concentrations of three-cyclic PAHs accounted for higher ratios of total PAHs concentrations than those of the other PAHs.Coal combustion and vehicle exhaust were the main sources of PAHs in PM_(2.5)in Changchun.The toxic equivalent of PAHs in PM_(2.5)in Changchun did not exceed the daily standard of BaP in China.Low incremental lifetime risks were found in adults and children of Changchun.

关 键 词：PM 2.5 多环芳烃 污染特征 致癌风险评价 

分 类 号：X831[环境科学与工程—环境工程]