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莱州湾沉积物重金属分布特征及生态风险评价

发表时间:2017-06-30  浏览量:63  下载量:33
全部作者: 肖彩玲,李丹,李雁宾
作者单位: 中国海洋大学海洋化学理论与工程技术教育部重点实验室;中国海洋大学化学化工学院
摘 要: 为探明莱州湾沉积物重金属的时空分布特征及生态风险,分别于2016年7月和10月调查采集了莱州湾表层沉积物样品,测定As、Cd、Cr、Cu、Ni、Pb和Zn 7种重金属的含量,并采用潜在生态风险指数(potential ecological risk index,PERI)法和沉积物质量基准(sediment quality guidelines,SQGs)法对7种重金属的生态风险进行评价。结果表明,莱州湾表层沉积物中重金属高值区主要出现在黄河入海口和小清河河口等西部河口附近,Cd、As、Cu和Cr是莱州湾污染较为严重的重金属。
关 键 词: 环境化学;重金属;沉积物;生态风险;莱州湾
Title: Distribution characteristics and potential risk of heavy metals in the sediment of Laizhou bay
Author: XIAO Cailing, LI Dan, LI Yanbin
Organization: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China; College of Chemistry and Chemical Engineering, Ocean University of China
Abstract: Two cruises were conducted to investigate the distribution, controlling factors and potential risk of heavy metals in the surface sediments of Laizhou bay in July and October of 2016. The concentrations of seven heavy metals (As, Cd, Cr, Cu, Ni, Pb and Zn) in the sediments were measured. The potential ecological risks of heavy metals were then evaluated by both the potential ecological risk index (PERI) and sediment quality guidelines (SQGs) methods. The results indicate that the “hot spots” of heavy metals mainly distribute near the Yellow river estuary and Xiaoqing river mouths. Risk assessment indicates that Cd, As, Cu and Cr should be listed as the priority contaminant metals in Laizhou bay.
Key words: environmental chemistry; heavy metals; sediment; risk assessment; Laizhou bay
发表期数: 2017年6月第12期
引用格式: 肖彩玲,李丹,李雁宾. 莱州湾沉积物重金属分布特征及生态风险评价[J]. 中国科技论文在线精品论文,2017,10(12):1352-1359.
 
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