北部湾北部海底表层沉积物重金属污染评价  

Heavy Metal Pollution Assessment in Seafloor Sediments in the Northern Beibu Gulf

作　　者：夏嘉 高苑 林倩妮 宋之光 Xia Jia;Gao Yuan;Lin Qianni;Song Zhiguang(College of Chemistry and Environmental Science,Guangdong Ocean University,Zhanjiang 524088,China)

机构地区：[1]广东海洋大学化学与环境学院,广东湛江524088

出　　处：《广东化工》2021年第16期167-169,166,共4页Guangdong Chemical Industry

基　　金：广东海洋大学博士科研启动项目(R19004;R17001)。

摘　　要：为了解北部湾北部表层沉积物中重金属的污染情况,采集了九个站位的表层沉积物样品,对Cu、Pb、Zn、Hg、Cr、Ni、Cd七种重金属元素和类金属元素As含量和分布特征进行分析,采用潜在生态风险指数法对污染状况进行了评价。结果表明:北部表层沉积物中的重金属的平均含量按从大到小的顺序排列为Zn>Cr>Ni>Pb>Cu>As>Cd>Hg。各元素的平均值均低于国家Ⅰ类海洋沉积物的标准,但Cu、Zn、Cr和Ni的平均值高于南海北部陆架区表层沉积物;S1、S6和S7三站位的潜在生态危害指数RI>150,属于中度危害,而其余站位的总生态危害程度为低度。To understand the pollution of heavy metals in the surface sediments of the northern Beibu Gulf, surface sediment samples from nine sites were collected. Seven heavy metal elements(Cu, Pb, Zn, Hg, Cr, Ni, Cd) and metalloid element(As) in the sediments of the nine sites were analyzed. Degree of contamination was evaluated by the potential ecological risk index. The results revealed that: the average heavy metal content is listed in order from most to least as: Zn>Cr>Ni>Pb>Cu>As>Cd>Hg;The average value of each element is lower than the national standard of class I Marine sediment. Among the nine stations, the potential ecological risk index in S1, S6 and S7 stations was over 150, belong to moderate risk level. The potential ecological risk of other stations can be regarded as low level.

关 键 词：重金属 表层沉积物 北部湾 分布特征 污染评价 

分 类 号：TQ[化学工程]