胶州湾海域表层沉积物重金属元素分布特征与风险评价  

DISTRIBUTION PATTERN AND RISK ASSESSMENT FOR HEAVY METALS IN THE SURFACE SEDIMENTS OF JIAOZHOU BAY

作　　者：胡睿 窦衍光 邹亮 林曦 薛碧颖 王蜜蕾 王青 解永健 HU Rui;DOU Yanguang;ZOU Liang;LIN Xi;XUE Biying;WANG Milei;WANG Qing;XIE Yongjian(Qingdao Institute of Marine Geology,China Geological Survey,Qingdao 266237,China;Laboratory for Marine Mineral Resources,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China;Qingdao Geo-Engineering Surveying Institute(Qingdao Geological Exploration Development Bureau),Qingdao 266100,China;Key Laboratory of Geological Safety of Coastal Urban Underground Space,Ministry of Natural Resources,Qingdao 266100,China)

机构地区：[1]中国地质调查局青岛海洋地质研究所,青岛266237 [2]青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室,青岛266237 [3]青岛地质工程勘察院(青岛地质勘查开发局),青岛266100 [4]自然资源部滨海城市地下空间地质安全重点实验室,青岛266100

出　　处：《海洋地质前沿》2021年第11期11-21,共11页Marine Geology Frontiers

基　　金：中国地质调查局地质调查二级项目“青岛多要素城市地质调查”(DD20189230);山东省自然资源厅2019年度省级地质勘查项目“山东省胶州湾海岸带综合地质调查项目”(鲁勘字(2019)50号)。

摘　　要：分析了胶州湾海域150个站位表层沉积物Hg、Cd、Pb、Zn、Cu、Cr、As等7种重金属元素的分布特征,对海洋沉积物质量进行标准分类,利用地质积累指数法和潜在生态风险指数法,对重金属元素的污染程度和生态风险等级进行评价。结果表明,研究区表层沉积物重金属元素呈现由岸向海逐渐减少的分布特征,且胶州湾东部近岸区域高于西部区域。经计算评价,胶州湾内表层沉积物7种重金属元素平均含量均未超过《海洋沉积物质量(GB 18668−2002)》规定的第一类沉积物标准,研究区东侧部分站位达到二类和三类标准。研究区表层沉积物重金属总体污染程度属清洁−轻度污染,综合潜在生态风险程度低。自20世纪80年代以来,人类活动已成为影响胶州湾表层沉积物重金属元素分布的主要因素。In this paper,the distribution patterns of heavy metals of Hg,Cd,Pb,Zn,Cu,Cr and As taken from 150 surface sediment samples of Jiaozhou Bay are analyzed for assessment of environment qualities.The pollution level and ecological risk of the heavy metals are evaluated with the geological accumulation index and the potential ecological risk index.The results show that the amount of heavy metal elements in surface sediments of Jiaozhou Bay gradually decrease from coast towards the sea in general,and is relatively higher in the eastern nearshore area comparing to the western.According to our evaluation,the overall quality of sediments in Jiaozhou Bay is quite good,and the sediment quality according to average content of heavy metal elements belongs to the first type of sediments stipulated in Specifications of Marine Sediment Quality(GB 18668−2002),except for the sediments in the eastern part,which may reach the second or even the third type of sediment according to the standards.The overall heavy metals pollution levels of the sediments are clean to light polluted,and the integrated potential ecological risk is low.Since 1980s,human activities have become the main factor affecting the distribution of heavy metals in the surface sediments of Jiaozhou Bay.

关 键 词：胶州湾 表层沉积物 重金属 分布特征 风险评价 

分 类 号：P736.21[天文地球—海洋地质]