2018年淄博市某城区大气PM_(2.5)中多环芳烃的源解析及健康风险评估  

Source apportionment and health risk assessment on polycyclic aromatic hydrocarbons in PM_(2.5) in an urban area,Zibo city,2018

作　　者：王敏[1,2] 邢燕 高慧[1,2] 李婷婷 李广益[1] 王钟 王勤[1,2] 徐文杰[1] WANG Min;XING Yan;GAO Hui;LI Ting-ting;LI Guang-yi;WANG Zhong;WANG Qin;XU Wen-jie(Zibo City Center for Disease Control and Prevention,Zibo,Shangdong,255026,China;不详)

机构地区：[1]淄博市疾病预防控制中心,山东淄博255026 [2]淄博市环境有机污染与人群健康监测分析重点实验室,山东淄博255026

出　　处：《预防医学论坛》2021年第6期437-439,444,共4页Preventive Medicine Tribune

基　　金：淄博市重点研发计划(项目编号:2018kj010113);山东省医药卫生科技发展计划项目(项目编号:2017WS378);淄博市科技发展计划项目(项目编号:2017kj010071)。

摘　　要：目的了解淄博市某城区大气PM_(2.5)中多环芳烃(PAHs)来源、污染水平,并评估其对人群的潜在健康风险。方法于2018年每月10~16日,在淄博市某城区采集PM_(2.5)样本,经高效液相色谱法测定大气PM_(2.5)中16种PAHs浓度水平,采用特征比值来判断PM_(2.5)中PAHs来源,并利用呼吸途径暴露PAHs引发癌症的风险(ILCR)模型进行健康风险评估。结果大气PM_(2.5)中16种PAHs每日总质量浓度为1.14~21.72 ng/m^(3),平均8.23 ng/m^(3),其中4环PAHs占比最高,为38.23%。苯并[a]芘日质量浓度为0.08~2.96 ng/m^(3),有1 d超过我国环境空气质量标准限值(_(2.5) ng/m^(3))。经特征比值判断,PM_(2.5)中PAHs受煤燃烧、汽油燃烧和柴油燃烧的综合影响。结论该采样点存在大气PM_(2.5)污染,人群通过吸入途径暴露于PM_(2.5)中16种PAHs的总致癌风险值为2.17×10^(-6),高于1×10^(-6),但低于1×10^(-4),提示该区域居民在目前接触水平下有潜在致癌风险。Objective To understand the source of PAHs and the level of pollution in an urban atmospheric PM_(2.5) in Zibo city, 2018,and assess their potential health risks to the population. Methods PM_(2.5) samples were collected on 10 th-16 th of each month in Zibo city and 16 PAHs concentration levels in PM_(2.5) were determined by HPLC.The characteristic ratios were used to determine PAHs source in the PM_(2.5),and the risk(ILCR) model of respiratory route exposure PAHs initiation of cancer was used for health risk assessment. Results The daily total mass concentration of 16 PAHs in the PM_(2.5) was between 1.14-21.72 ng/m^(3),with an average of 8.23 ng/m^(3),of which 4 rings accounted for the highest proportion of PAHs of 38.23%.The mass concentration of BaP was between 0.08-2.96 ng/m^(3),and 1 day exceed the standard limit of ambient air quality in China(_(2.5) ng/m^(3)).PAHs in Zibo city PM_(2.5) were affected by coal combustion, gasoline combustion and diesel combustion according to the characteristic ratio. Conclusion There is air PM_(2.5) pollution at the sampling site, and the total carcinogenic risk of 16 PAHs of PM_(2.5) exposed by inhalation was 2.17×10^(-6),which is higher than 1×10^(-6),but lower than 1×10^(-4).It is suggested that the residents in the region have a possible carcinogenic risk at the current exposure level.

关 键 词：PM_(2.5) 多环芳烃 源解析 健康风险评估 

分 类 号：R122.7[医药卫生—环境卫生学]