Chronic health risk assessment on metal elements in atmospheric PM2.5 in Wucheng District
10.19485/j.cnki.issn2096-5087.2019.01.006
- VernacularTitle:婺城区大气PM2.5金属元素污染的慢性健康风险评估
- Author:
Xiaoqing HE
1
;
Jinbin LUO
;
Zuoyi WANG
;
Wei SHENG
Author Information
1. Department of Environmental and Occupational Health,Jinhua Center for Disease Control and Prevention
- Publication Type:Journal Article
- Keywords:
Fine particulate matter，Metal element，Carcinogenicity，Risk assessment
- From:
Journal of Preventive Medicine
2019;31(1):23-27
- CountryChina
- Language:Chinese
-
Abstract:
Objective :To investigate the characteristics and the chronic health risks of metals in fine particulate matter（PM2.5） of Wucheng District,Jinhua .
Methods:The PM2.5 samples were collected in Wucheng District of Jinhua from the year 2015 to 2017.Chromium(Cr), manganese (Mn),nickel(Ni),arsenic(As),selenium(Se),cadmium(Cd),antimony(Sb),lead(Pb),beryllium(Be),aluminum(Al),thallium（Tl）and mercury（Hg） were measured by inductively coupled plasma mass spectrometry（ICP-MS）. The health risks of the metals were assessed based on the standard method recommended by United States Environmental Protection Agency .
Results:From 2015 to 2017,the average concentration of PM2.5 in Wucheng District was（53.42±26.95）μg/m3,and the average concentration of PM2.5 in each season and each year were significantly different（P<0.05）. The median（interquartile range）concentration of metal elements in PM2.5 was 136.66（117.14）ng/m3,with higher concentration of Al,Pb,Mn,Cd and Se. From 2016 to 2017,the average concentration of Cd exceeded the reference limit（5.00 ng/m3）. The median （interquartile range） concentration of metal elements in PM2.5 in winter was 175.12（132.45）ng/m3,the highest,and in summer was 92.55（52.81）ng/m3,the lowest. The total hazard quotient（HQ）of nine kinds of metal elements in PM2.5 was 2.90;the HQ of As,Be,Ni,Se,Hg,Al,Mn and Sb were all less than 1,except Cd. The total carcinogenic risk of five kinds of metal elements in PM2.5 was more than 10-6,among which the carcinogenic risk of As and Cd were more than 10-6,and the carcinogenic risk of Be,Pb and Ni were less than 10-6 .
Conclusion:The concentrations of Al,Pb,Mn,Cd and Se in PM2.5 of Wucheng District were higher and the concentration of Cd exceeded the reference limit. The non-carcinogenic and carcinogenic risk of Cd were both higher,the carcinogenic risk of As was also higher.
- Full text:婺城区大气PM2.5金属元素污染的慢性健康风险评估1.pdf
