郑州市2020～2021年大气PM2.5中金属元素污染特征及健康风险评估
Pollution characteristics and health risk assessment of metal elements in PM2.5 in Zhengzhou from 2020 to 2021
靳超美 1阙菡雅 2吴雯 1焦琳琳 1周蓉 1田梅 1张思雨 1陈彦哲 2周舫1
作者信息
- 1. 郑州大学公共卫生学院劳动卫生与职业病学教研室 郑州 450001
- 2. 郑州市疾病预防控制中心公共卫生监测与评价所 郑州 450007
- 折叠
摘要
目的:分析 2020～2021 年郑州市两城区大气PM2.5 中金属元素的浓度,推测其可能的来源并评估其健康风险.方法:测定2020～2021 年郑州市二七区和经开区的PM2.5 及其中金属元素的浓度,利用富集因子(EF)法和主成分分析评估金属元素的来源,并根据相关技术指南进行PM2.5 中金属元素经吸入途径的健康风险评估.结果:2020～2021 年郑州市二七区、经开区的PM2.5浓度分别为50.00(38.00,72.50)、53.00(40.00,74.50)μg/m3,两城区各金属元素浓度比较,差异无统计学意义(P>0.05);两城区Mn、Ni的EF值在10～100 之间,其余元素的EF值均大于100;两城区均筛选出两个主成分,成分1 包括Se、Sb、Pb、Tl、As、Cd、Ni,成分2 包括Al、Mn;两城区金属元素的非致癌风险危害商值均小于1,二七区、经开区As的致癌风险分别为2.20×10-5、2.41×10-5,Cd的致癌风险分别为1.55×10-6、1.71×10-6.结论:目前郑州市仍然存在大气PM2.5 污染情况,其中金属元素As、Cd对人群具有潜在致癌风险.
Abstract
Aim:To analyze the concentration levels of metal elements in atmospheric PM2.5 in two urban areas of Zhengzhou from 2020 to 2021,speculate the possible sources and assess the health risks.Methods:The concentrations of PM2.5 and its metal elements in Erqi District and Jingkai District of Zhengzhou from 2020 to 2021 were determined,and the enrichment factor(EF)method and principal component analysis were used to estimate the metal elements sources.The health risks of metals in PM2.5 through inhalation were assessed according to the relevant technical guidelines.Results:The concentration of PM2.5 in Erqi District and Jingkai District of Zhengzhou from 2020 to 2021 was 50.00(38.00,72.50)and 53.00(40.00,74.50)μg/m3,respectively.There was no significant difference in the concentration of each metal element between the two urban areas(P>0.05).The EF values of Mn and Ni in PM2.5 in the two urban areas were between10 and 100,and the EF values of the remaining metal elements were larger than 100.Two principal components were screened from both urban areas,component 1 included Se,Sb,Pb,Tl,As,Cd,and Ni,and component 2 included Al and Mn.The non-car-cinogenic risk hazard quotient values of metal elements in atmospheric PM2.5 in the two urban areas were less than 1,and the carcinogenic risks of As in Erqi District and Jingkai District were 2.20×10-5 and 2.41×10-5,and the carcinogenic risks of Cd were 1.55×10-6 and 1.71×10-6,respectively.Conclusion:Zhengzhou is still polluted by PM2.5,and As and Cd in PM2.5 pose potential carcinogenic risks.
关键词
PM2.5/金属元素/健康风险评估/郑州Key words
PM2.5/metal element/health risk assessment/Zhengzhou引用本文复制引用
基金项目
河南省自然科学基金(222300420537)
郑州大学大学生创新创业训练计划(2022cxcy582)
出版年
2024
国家科技期刊平台
NSTL
万方数据