宝鸡市不同时期地表灰尘重金属空间分布及其健康风险研究  

Spatial Distribution and Health Risk of Heavy Metals in Surface Dust of Different Periods in Baoji City

作　　者：金梓函 张军[1,2] Jin Zihan;Zhang Jun(Shanxi Key Laboratory of Disaster Monitoring and Mechanism Simulation,Baoji University of Arts and Sciences,Baoji 721013,China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education,Chang an University,Xi’an 710064,China)

机构地区：[1]宝鸡文理学院陕西省灾害监测与机理模拟重点实验室,陕西宝鸡721013 [2]长安大学旱区地下水文与生态效应教育部重点实验室,陕西西安710064

出　　处：《环境科学与管理》2022年第11期172-177,共6页Environmental Science and Management

基　　金：旱区地下水文与生态效应教育部重点实验室(长安大学)开放基金项目(300102290504);陕西省灾害监测与机理模拟重点实验室项目(20JS012);宝鸡文理学院校级研究生创新科研项目(YJSCX22ZD09)。

摘　　要：为了研究宝鸡市地表灰尘重金属采暖期和非采暖期的含量、空间分布和健康风险差异,采用GIS空间分析和健康风险评价方法对元素含量空间分布和健康风险进行研究与评估,分析两个时期重金属含量空间分布和健康风险差异。结果表明,采暖期Cr、Cu、Zn含量均值高于非采暖期。采暖期Cd、Cr、Zn含量均值高于陕西省背景值,分别为其背景值的3.67、1.55和1.36倍;非采暖期只有Cd含量均值高于陕西省背景值,为其背景值的5.56倍。除As、Co和Ni外,其余元素在采暖期与非采暖期存在一定差异。两个时期均不存在健康风险,但采暖期成人和儿童的非致癌风险高于非采暖期。In order to study the differences in content,spatial distribution and health risks of heavy metals in surface dust between heating and non-heating periods in Baoji City,GIS spatial analysis and health risk assessment methods were used to study and evaluate the spatial distribution of elements and health risks,and the differences in spatial distribution of heavy metals and health risks between the two periods were analyzed.The results showed that the average contents of Cr,Cu and Zn in heating period were higher than those in non-heating period.The average contents of Cd,Cr and Zn in the heating period were 3.67,1.55 and 1.36 times higher than the background values of Shaanxi Province,respectively.In the non-heating period,only the average Cd content was 5.56 times higher than the background value of Shaanxi Province.In addition to As,Co and Ni,there are certain differences in the elements during heating period and non-heating period.There was no health risk during both periods,but the non-carcinogenic risk of adults and children in heating period is higher than that in non-heating period.

关 键 词：地表灰尘 重金属 采暖期 非采暖期 空间分布 

分 类 号：X53[环境科学与工程—环境工程]