石油污染滩涂沉积物中TPH和PAHs分布及健康风险评估.pdf

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1、摹l毛斜2014年第33卷第4期ShanghaiEnvironmentalSciences石油污染滩涂沉积物中TPH和PAHs分布及健康风险评估DistributionOfTPHandPAHsContentsinSedimentfrOmOiIPollutedTidaIMarshesandHealthRiskAssessment谭娟。马婧卢洋吴健，王敏吴建强(1．上海市环境科学研究院，上海200233；2．华东师范大学资源与环境科学学院，上海200062；3．上海环境保护有限公司，上海200233)TanJuanMaJingLuYangWuJian1,2

2、WangMinWuJianqiangr1．ShanghaiAcademyofEnvironmentalSciences，Shanghai200233；2．CollegeofResourcesandEnvironmentalScience，EastChinaNormalUniversity，Shanghai200062；3．ShanghaiEnvironmentalProtectionCo．，Ltd．，Shanghai200233)摘要研究某石油污染滩涂区域沉积物中TPH(TotalPetroleumHydrocarbons)和PAHs(Polycycl

3、icAromaticHydrocarbons)分布特征，并采用USEPA人体暴露风险评价方法进行人体健康风险评估。结果表明，污染区域沉积物中TPH浓度分布范围为1964～46327．2mg／kg，PAHs浓度分布范围为0．15～11．06mg／kg，TPH浓度垂直分布呈现出表层>中层>深层。污染物质的区域分布存在较大空间异质性。总体而言，沉积物中TPH浓度与PAHs浓度分布规律一致，两者存在着正相关关系。健康风险评估结果显示，就捕鱼渔民而言。污染区域7个采样点位沉积物中TPH非致癌风险超过可接受水平，其危害商在1．06～7．64之间，就拾蟹人员而言，污

4、染区域10个采样点位非致癌风险超过可接受水平，其危害商在1．02～11．2O之间，建议采取相关修复措施进行修复。关键词：石油污染滩涂沉积物总石油烃多环芳烃分布风险评估AbstraclDistributioncharaclerIslicsoflotaIpetroleumhydrocarbon(TPH)andpolycyclicaromatichydrocarbons(PAHs)insedimenlaroundlidalmarshespollutedbyanoilspillaccidentwereanalysed，andtheirhealthriskswe

5、reevaluatedbyapplyingahumanexposureassessmentapproachofUSEPA．ResultsshowedIhaIlhecontenlofTPHinsedimenlrangedfr0m1，964to46，327mg／kg，andlhalofPAHsdidfrOm0．15to11．06mg／kg．TPHconcentrationhadaverticallydecliningprofilealongwiththedepthwhilstitsarealdistributionbeingspatiallyheler0q

6、eneOus．Ingeneral，lhedistributionofTPHandFIAHscontentsinsedimenthadconsistenlpatternswithapositivecorrelationbetweeneachother．ThehumanhealthriskassessmenfindicatedcI1alfhenon．carcinogenicrisksofTPHinsedimenlcollectedalsomeofsamplingspotsinthepollutedareawerebeyondacceptableleve1．

7、Tofishermen，thehazardquotient(HQ)rangedfrom1．O6t07．64atsevensamplingspots，andlOcrabpickers．theHQrangedfrOm1．02t011．2Oaltenspots．Itwasthereforesuggestedthatrelatedremediationmeasuresshouldbefaken．Keywords：PetroleumpollutionTidaIflatSedimenlTotaIpetroleumhydrocarbon(TPH)Polycyclic

8、aromatichydrocarbons(PAHs)DistributionRiskasses