胶州湾表层沉积物重金属元素分布特征及其影响因素  

DISTRIBUTION OF HEAVY METALS IN SURFICIAL SEDIMENTS OF JIAOZHOU BAY AND ITS INFLUENCING FACTORS

作　　者：何书锋[1,2] 李广雪[1] 史经昊[1] 

机构地区：[1]中国海洋大学海洋地球科学学院,海底科学与探测技术教育部重点实验室,青岛266100 [2]国土资源部青岛海洋地质研究所,青岛266061

出　　处：《海洋地质前沿》2013年第4期41-48,共8页Marine Geology Frontiers

基　　金：国土资源部地质调查项目(1212011120430)

摘　　要：利用胶州湾高密度网格化的306个表层沉积物样品地球化学分析数据,研究了胶州湾表层沉积物重金属空间分布规律,探讨了影响其空间分布差异性的因素。研究结果表明:Cu、Pb、Zn、Cd、Cr、Hg和As重金属元素由近岸向湾内呈现出差异性的分布规律,值得注意的是,Cu、Pb、Zn、Hg和Cr5种重金属元素在黄岛北部也存在一个明显的高值区;20世纪80年代以来人类活动的加强使得胶州湾的物质来源发生了明显的改变,其成为影响胶州湾表层沉积物重金属空间分布的最主要因素,此外,胶州湾的底质类型、复杂海洋水动力环境、底质类型多样性及生物作用等因素也对重金属的空间分布起到了不同程度的影响。Based on the heavy metals concentration data of the surface sediments taken from 306 sites in the Jiaozhou Bay,we studied the distribution pattern of heavy metals and discussed its influencing factors. Results show that the contents of Cu,Pb,Zn,Cd,Cr,Hg and As are high near the east coast of Jiaozhou Bay and low within the Bay,and each heavy metal shows a trend of differentiation from the coast to the center of the bay. High values of Cu,Pb,Zn, Hg and Cr are also found in the north of Huangdao. Since the 1980s, the source of sediments have been changed due to intensification of hu- man activities, which is the main influence factor of the heavy metals spatial distribution pattern in the surface sediments. In addition to the complex Marine hydrodynamic environment, sediment types and biological activities are also important for the spatial distribution of heavy metals.

关 键 词：胶州湾 表层沉积物 重金属 地球化学特征 

分 类 号：P736.13[天文地球—海洋地质]