342023年8月第39卷第4期广东省汕头市某电子垃圾拆解区河道底泥重金属污染特征及生态风险评价*麦泳诗1魏伟2，3（1.广东智环创新环境科技有限公司，广东广州510180；2.广东省环境科学研究院，广东广州510045；3.广东环科院环境科技有限公司，广东广州510045）摘要以汕头市某电子垃圾拆解活动影响的河道为研究对象，沿河道中线间隔50m采集表层底泥样品，检测分析其重金属含量，研究底泥重金属污染特征并综合评价了其生态风险。结果表明，参照GB4284—2018中的A级污泥产物标准，调查区域河道底泥主要受到镉、铜、砷、镍、铅、锌等重金属污染。内梅罗综合污染指数法评价结果表明，河道底泥重金属总体呈重度污染。潜在生态危害指数范围为132.60~5668.65，平均值为1982.97，总体生态风险为极高风险，亟需开展河道底泥的生态修复工程。关键词电子垃圾拆解；河道底泥；重金属；生态风险评价中图分类号：X53文献标志码：A文章编号：2096-2053（2023）04-0034-06PollutionCharacteristicsandEcologicalRiskAssessmentofHeavyMetalsPollutionCharacteristicsandEcologicalRiskAssessmentofHeavyMetalsinRiverSedimentaroundE-wasteDismantlingAreainShantouCity,inRiverSedimentaroundE-wasteDismantlingAreainShantouCity,GuangdongProvinceGuangdongProvinceMAIYongshi1WEIWei2,3(1.GuangdongZhihuanInnovationEnvironmentTechnologyCo.,Ltd.,Guangzhou,Guangdong510180,China:2.GuangdongProvincialAcademyofEnvironmentalSciences,Guangzhou,Guangdong510045,China:3.GuangdongHuankeyuanEnvironmentalTechnologyCo.Ltd.,Guangzhou,Guangdong510045,China)AbstractTakingtheriverchannelaffectedbythetypicale-wastedismantlingactivityinShantoucityastheresearchobject,thesurfacesedimentsampleswerecollectedatintervalsof50malongthemiddlelineoftheriverchannel,andtheheavymetalcontentwasdetectedandanalyzed.Thepollutioncharacteristicsofheavymetalsinsedimentwerestudied,andtheecologicalriskwascomprehensivelyevaluated.TheresultsshowedthataccordingtothegradeAsludgeproductstandardinGB4284-2018,theriversedimentinthesurveyareawasmainlycontaminatedbyCd,Cu,As,Ni,Pb,Zn,andotherheavymetals.TheevaluationresultsoftheNemerocomprehensivepollutionindexmethodshowedthattheheavymetalsintheriversedimentaregenerallyheavilypollut...
