宝鸡长青镇铅锌厂周围灰尘中铅的污染水平与健康风险  

Human Health Risk Related to Pollution Level of Lead in Dust around a Lead-zinc Plant in Changqing Town,Baoji City

作　　者：任春辉[1] 卢新卫[1] 王利军[1] 陈灿灿[1] 杨光[1] 李楠[1] 杨林娜[1] 

机构地区：[1]陕西师范大学旅游与环境学院,陕西西安710062

出　　处：《干旱区研究》2012年第1期155-160,共6页Arid Zone Research

基　　金：教育部新世纪优秀人才支持计划项目(NCET-05-0861);中央高校基本科研业务费专项资金项目(GK200901008)

摘　　要：利用X-Ray荧光光谱仪,在宝鸡长青镇铅锌厂周围对灰尘中铅含量测试的基础上,采用污染指数及健康风险评价方法,对灰尘中铅的污染状况及健康风险进行分析。结果显示:宝鸡市长青镇铅锌厂周围灰尘中铅的平均含量为2 631.13 mg/kg,显著高于文献报道的其他城市街尘中铅的含量及陕西土壤背景值。污染指数评价结果表明,铅锌厂周围灰尘中均存在不同程度的铅污染,大多数样品达到了严重污染和极为严重污染的程度。健康风险评价结果显示,手—口摄入行为是人体摄入灰尘中铅的主要途径,儿童经手—口摄入铅的暴露风险商及总危害指数均大于1,说明灰尘铅对儿童健康具有严重危害。The concentration of Pb in dust samples collected from surrounding environment of a lead-zinc plant in Changqing Town,Baoji City was measured by X-ray fluorescence spectrometry,and the pollution index and human health risk assessment were used to assess the pollution of Pb in dust.The results show that the average concentration of Pb in dust was 2 631.13 mg/kg,it was higher than that reported in other references about urban street dust.The assessment results of lead pollution index show that the Pb pollution level in dust was different from different sites around the lead-zinc plant.Pollution of most samples was very serious.The human health risk assessment shows that contact was the main ingestion behavior.Both the exposure risk through contact ingestion and the total harmful index of children were higher than 1,which reveals that pollution of lead in dust is very harmful to children＇s health.

关 键 词：灰尘 铅 污染指数 健康风险 铅锌厂 长青镇 宝鸡 

分 类 号：X53[环境科学与工程—环境工程]