摘要
分析了北戴河近岸海域表层沉积物重金属含量和空间分布特征,利用修正综合指数法和潜在生态风险指数法对其污染程度进行了评价。结果表明,该区表层沉积物重金属平均含量较低,高值区主要分布在西南角和东北角河口,低值区主要分布在中部;区内重金属污染程度总体上处于较低至中等等级,污染相对明显的为人造河口、石河口和秦皇岛城区近岸海域。相对而言,Hg是主要的致污元素。
This study deals with the concentration and spatial distribution of heavy metals in the nearshore sediments of Beidaihe.The modified degree of contamination（mCd）and potential ecological risk index are adopted to assess the heavy metals contamination.The results show that the mean concentrations of heavy metals are low in the study area in general.They are higher in the estuaries in the southwest part and northeast part and lower in the central part of the study area.It is obviously polluted in the estuaries of the Shihe and Renzaohe rivers and the urban inshore area of Qinhuangdao.Hg is the main element leading to pollution among the heavy metals.
出处
《海洋地质前沿》
2015年第7期47-51,共5页
Marine Geology Frontiers
基金
国土资源大调查项目"莱州湾地质环境调查评价"(12120113003800)
国土资源部公益性行业科研专项(201011019)
国家海洋局海域使用金项目"北戴河海域综合整治区近现代沉积物污染特征调查评价"(QHY)
关键词
重金属
沉积物
污染评价
北戴河
heavy metals
sediment
pollution assessment
Beidaihe
