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  

Pollution Characteristics and Ecological Risk Assessment of Heavy Metals in River Sediment around E-waste Dismantling Area in Shantou City,Guangdong Province

作　　者：麦泳诗 魏伟 MAI Yongshi;WEI Wei(Guangdong Zhihuan Innovation Environment Technology Co.,Ltd.,Guangzhou,Guangdong 510180,China;Guangdong Provincial Academy of Environmental Sciences,Guangzhou,Guangdong 510045,China;Guangdong Huankeyuan Environmental Technology Co.Ltd.,Guangzhou,Guangdong 510045,China)

机构地区：[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

出　　处：《林业与环境科学》2023年第4期34-39,共6页Forestry and Environmental Science

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50 m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。Taking the river channel affected by the typical e-waste dismantling activity in Shantou city as the research object,the surface sediment samples were collected at intervals of 50 m along the middle line of the river channel,and the heavy metal content was detected and analyzed.The pollution characteristics of heavy metals in sediment were studied,and the ecological risk was comprehensively evaluated.The results showed that according to the grade A sludge product standard in GB4284-2018,the river sediment in the survey area was mainly contaminated by Cd,Cu,As,Ni,Pb,Zn,and other heavy metals.The evaluation results of the Nemero comprehensive pollution index method showed that the heavy metals in the river sediment are generally heavily polluted.The potential ecological hazard index ranged from 132.60-5668.65,with an average value of 1982.97.The overall ecological risk was extremely high,and it was urgent to carry out ecological restoration projects of river sediment.

关 键 词：电子垃圾拆解 河道底泥 重金属 生态风险评价 

分 类 号：X53[环境科学与工程—环境工程]