摘要
基于日照东侧海域17个采样站点的表层沉积物样品数据,系统分析了Pb、Cd、Cu、Zn、Cr、As、Hg7种重金属的含量特征与空间分布规律,并采用单因子指数(Ii)、地累积指数(I_(geo))和潜在生态风险指数(RI)进行污染评估。结果显示:研究区沉积物重金属元素平均含量表现为Zn>Cr>Cu>Pb>As>Cd>Hg。三种评价方法均显示研究区沉积物重金属污染程度较低。重金属含量及RI值平面分布整体上表现港口及海州湾附近的高值特征,表明研究区沉积物重金属污染主要受到日照港和海州湾陆源河流物质的双重影响。
Based on the data of surface sediment samples from 17 sampling sites in the eastern sea area of Rizhao,the content characteristics and spatial distribution patterns of seven heavy metals(Pb,Cd,Cu,Zn,Cr,As,Hg)were systematically analyzed.The pollution was assessed using the single-factor index(Ii),the geo-accumulation index(I_(geo)),and the potential ecological risk index(RI).The results show that the average content of heavy metals in the sediments of the study area is in the order of Zn>Cr>Cu>Pb>As>Cd>Hg.All three evaluation methods indicate that the heavy metal pollution level in the sediments of the study area is relatively low.The planar distribution of heavy metal content and RI values generally shows high-value characteristics near the port and Haizhou Bay,indicating that the heavy metal pollution in the sediments of the study area is mainly influenced by the dual effects of materials from the land-based rivers of Rizhao Port and Haizhou Bay.
作者
王岩
侯世磊
于滨
胡传琦
朱颖涛
Wang Yan;Hou Shi-lei;Yu Bin;Hu Chuan-qi;Zhu Ying-tao(Rizhao Port Oil Terminal Co.,Ltd.,Rizhao 276800,Shandong,China;Tianjin Research Institute of Water Transport Engineering,Ministry of Transport,Tianjin,300456,China)
出处
《中国水运》
2025年第19期135-137,共3页
基金
国家重点研发计划项目(2022YFB3207400)
中央级公益性科研院所基本科研业务费项目(TKS20230205)。
关键词
日照
表层沉积物
重金属污染
生态风险
Rizhao
surface sediment
heavy metal pollution
ecological risk
