渤海沉积物中重金属分布及环境背景值

 讨论了渤海25柱岩芯样细颗粒（<0.063mm）中重金属含量分布，采用统计学方法确定了底质重金属的分布类型，通过渤海中部岩芯样分析结果，获得渤海沉积物中Cu、Pb、Zn、Cd的环境背景值。在研究中，借助Pb²¹⁰测年技术测定了百年前沉积层中重金属含量，结果与渤海底质Cu、Pb、Zn和Cd环境背景值是吻合的。

THE DISTRIBUTION AND ENVIRONMENTAL BACKGROUND VALUES OF THE HEAVY METALS IN SEDIMENT OF THE BOHAI SEA

ore samples were collected with the long-box and static pressuresampler from the Bohai Sea and adjacent estuary areas during 1983-1985.By means of statistical method, the distribution of heavy metals in sediment and the distribution types of Cu Pb Zn and Cd in the fine grains(less than 0.063mm)of the cores were determined.Based on the analytical results of the Bohai central part cores(uninfluenced by mankind),the environmental background values of these heavy metals were obtained.In the researching with the help of Pb-210 age dating data,Cu.Pb.Zn.and Cd contents about 100 years ago were determined from dated sedimentary core which is reconciled with the environmental background values of the heavy metals in sediment of the Bohai Sea.