设为首页 加入收藏 登录旧版
广州不同环境空气PM2.5中金属元素污染特征与风险评价
Pollution Characteristics and Risk Assessment of Metals in Ambient PM2.5 in Guangzhou
投稿时间:2020-12-14  修订日期:2021-06-03
DOI:10.19316/j.issn.1002-6002.2021.06.10
中文关键词:  环境空气  PM2.5  重金属  潜在生态风险  健康风险
英文关键词:ambient air  PM2.5  heavy metal  potential ecological risk  health risk
基金项目:东莞市社会科技发展(重点)项目(2019507101161);国家环境保护区域空气质量监测重点实验室开放基金(SRAQM02202002);环保公益性行业科研专项(201409009)
作者单位
袁鸾 广东省生态环境监测中心 国家环境保护区域空气质量监测重点实验室, 广东 广州 510308 
徐伟嘉 广东旭诚科技有限公司, 广东 广州 510220
东莞中山大学研究院, 广东 东莞 523808 
岳玎利* 广东省生态环境监测中心 国家环境保护区域空气质量监测重点实验室, 广东 广州 510308 
钟流举 广东环境保护工程职业学院, 广东 佛山 528216 
江明 广东省生态环境监测中心 国家环境保护区域空气质量监测重点实验室, 广东 广州 510308 
黄建彰 中山大学智能工程学院, 广东 深圳 518000 
傅绍杰 中山大学公共卫生学院, 广东 广州 510080 
通讯作者:岳玎利*  广东省生态环境监测中心 国家环境保护区域空气质量监测重点实验室, 广东 广州 510308  
摘要点击次数: 80
全文下载次数: 4
中文摘要:
      根据2015年广州城区磨碟沙、内陆郊区天湖和近海郊区万顷沙不同环境空气PM2.5中金属元素(Pb、Cd、Cr、Ni、As等23种)监测数据,分析其污染特征与富集程度,并评估潜在生态风险和健康风险,为大气污染风险防控提供支持。结果显示:广州大气PM2.5中金属K、Na、Fe、Ca、Al和Zn含量相对较高。总元素浓度总体呈冬季最高、夏季最低的特征,且随PM2.5污染加重而升高,但总元素在PM2.5中的占比下降。Cd、Se、Zn、Cu、Mo、Pb和Na富集严重(富集因子>100),体现了人类活动的重要影响,磨碟沙城区站富集因子通常高于另2个站点。广州大气总金属元素潜在生态危害程度为"很强",Cd贡献为主,Pb、Cu和As元素贡献分别在天湖、磨碟沙和万顷沙位列第二。As、Cr和Mn是大气金属元素健康风险的主要贡献者;磨碟沙的总致癌效应风险高于万顷沙和天湖,但万顷沙的总非致癌效应风险最高。
英文摘要:
      Based on 1-year observation in 2015 at the urban site (Modiesha,MDS),inland regional site (Tianhu,TH),and offshore regional site (Wanqingsha,WQS) in Guangzhou,chemical properties and enrichment factors were investigated for 23 metals,including Pb,Cd,Cr,Ni,As,etc.The potential ecological and health risks for the typical metals were evaluated to provide support for air pollution risk prevention and control.The results showed that the contents of K,Na,Fe,Ca,Al,and Zn in PM2.5 in Guangzhou were relatively high.Generally,the total metals showed highest mass concentration in winter and lowest in summer,and they increased with increasing PM2.5 concentrations,while the ratio of total metals to PM2.5 decreased.The enrichment factors of Cd,Se,Zn,Cu,Mo,Pb,and Na were higher than 100,indicating significant effect of human activity.The enrichment factors were usually the highest at MDS urban site.The ecological risk of total metals was high in Guangzhou.Cd was the major contributor,followed by Pb,Cu and As at TH,MDS and WQS,respectively.As,Cr and Mn were the main contributors to the health risk.The carcinogenic effect of metals in PM2.5 at MDS was higher than WQS and TH,while the non-carcinogenic effect at WQS was the highest.
查看全文  查看/发表评论  下载PDF阅读器