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时间:2019-02-27
《青岛市区大气降尘重金属对人体健康风险的评价》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第35卷第7期环境科学Vol.35,No.72014年7月ENVIRONMENTALSCIENCEJul.,2014青岛市区大气降尘重金属对人体健康风险的评价1231张春荣,吴正龙,姚春卉,高宗军(1.山东科技大学山东省沉积成矿作用与沉积矿产重点实验室,青岛266590;2.山东科技大学学生工作处,青岛266590;3.山东省煤田地质局第五勘探队,泰安271000)摘要:在青岛市区采集大气降尘、土壤样品各89件,并分析化验了样品中Cd、Cr、Cu、Hg、Ni、Pb、Zn等的含量.在这些分析化验结果的基础上,应用美国EPA人体暴露风险评价方法,对青
2、岛市区大气降尘重金属对人体的健康风险进行评价.结果表明,市南市北崂山区大气降尘重金属Cd、Cr、Cu、Hg、Pb、Zn平均值的含量最高,比李沧城阳区和黄岛区污染严重.大气降尘重金属平均值与相应土壤比,除市南市北崂山区大气降尘Hg的平均含量低于土壤均值外,其它均高于土壤.整体来看青岛市区大气降尘重金属对人体健康的风险差异不大,危害较小;但如果市南、崂山和城阳区大气降尘Cr、Pb一直保持这种高浓度,则有4个采样点可能对人体的健康造成危害;且不同途径、不同种类的大气降尘重金属累积将明显加大危害人体健康的风险.关键词:大气降尘;重金属;健康;风险;评价;
3、青岛市中图分类号:X502;X820.4文献标识码:A文章编号:0250-3301(2014)07-2736-06DOI:10.13227/j.hjkx.2014.07.042HealthRiskAssessmentofHeavyMetalsinAtmosphericDustofQingdaoCity1231ZHANGChun-rong,WUZheng-long,YAOChun-hui,GAOZong-jun(1.ShandongProvincialKeyLaboratoryofDepositionalMineralization&Sedimen
4、taryMinerals,ShandongUniversityofScienceandTechnology,Qingdao266590,China;2.DepartmentofStudentAffairs,ShandongUniversityofScienceandTechnology,Qingdao266590,China;3.TheFifthProspectingTeamofShandongProvincialBureauofCoalGeology,Taian271000,China)Abstract:Basedonthe89atmosphe
5、ricdustsamplesandsoilsamplesthatwerecollectedaroundQingdao,wetestedandanalyzedthecontentsofCd,Cr,Cu,Hg,Ni,Pb,Zn.Basedontheseanalysisresults,theriskofheavymetalsinatmosphericduststohumanhealthwereassessedbyusingtheUSEPAHealthRiskAssessmentModel.Analysisshowedthattheaveragecont
6、entsofCd,Cr,Cu,Hg,Pb,ZnintheatmosphericdustofShinan,ShibeiandLaoshandistrictswerethehighest.Therefore,theairpollutionofthesedistrictswasmoreseriousthanthedistrictsofLicang,ChengyangandHuangdao.Comparingtheaveragecontentsofheavymetalsinatmosphericdustwiththoseinsoil,wefoundtha
7、tonlythecontentofHginatmosphericdustcollectedfromthedistrictsofShinan,ShibeiandLaoshanwaslowerthanthatinthecorrespondingsoil.Allthecontentsofotherheavymetalsinatmosphericdustwerehigherthanthoseincorrespondingsoil.Asawhole,theheavymetalsinatmosphericdustofQingdaoCityshowedslig
8、htdifferenceandwerelessharmfultohumanhealth.However,itwasharmfulinso
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