2022年朔州PM2.5中重金属污染特征分析与潜在生态风险评价
Pollution Characteristic Analysis and Potential Ecological Risk Assessment of Heavy Metal in PM2.5 in Shuozhou in 2022
高芳 1贾俊 2田园园1
作者信息
- 1. 山西工学院材料工程学院
- 2. 山西省朔州生态环境监测中心 山西朔州 036000
- 折叠
摘要
目的 研究大气中重金属的污染特征,并评估重金属对人体健康的影响,为采取针对性措施提供支持依据.方法 于2022 年 1 月 1 日—12 月 31 日采用PM2.5自动监测超级站对朔州市PM2.5中 21 种重金属元素进行监测,通过富集因子法和潜在生态风险评价法,分析了大气重金属的污染特征、富集程度和潜在风险状况.结果 Zn、Pb、Sb、Sn、Se和Cd的EF值均大于100,为高度富集甚至超富集水平,说明这些元素受人为因素影响较大.朔州市PM2.5中重金属的潜在生态风险大小依次为:Cd>Se>Pb>Cu>Ni>Zn>V>Cr>Mn>Ti;Cd和Se表现出较高的生态风险潜力,其中,Cd元素的生态风险最大.
Abstract
Objective To study the pollution characteristics of heavy metal in the atmosphere and evaluate its im-pact on human health,so as to provide a supporting basis for taking targeted measures.Method A PM2.5 automatic monitoring super station was used to monitor 21 heavy metal elements in PM2.5 in Shuozhou from January 1 to De-cember 31 in 2022,and by the enrichment factor method and potential ecological risk assessment method,the pol-lution characteristics,enrichment degree and potential risk status of atmospheric heavy metal were analyzed.Result The EF value of Zn,Pb,Sb,Sn,Se and Cd was all greater than 100,with high enrichment or even super enrich-ment levels,indicating that these elements were greatly influenced by human factors.The potential ecological risk of heavy metal in PM2.5 in Shuozhou was as follows:Cd>Se>Pb>Cu>Ni>Zn>V>Cr>Mn>Ti,Cd and Se exhib-ited high ecological risk potential,and the Cd element had the highest ecological risk.
关键词
PM2.5/重金属污染/富集因子/潜在生态风险评价Key words
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出版年
2024
NETL
NSTL
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