江西省贵溪市水系沉积物重金属污染及其潜在生态风险评价  

Evaluation of Heavy Metal Pollution and Its Potential Ecological Risk in Stream Sediments in Guixi City,Jiangxi Province

作　　者：蒋起保 欧阳永棚 章敬若 饶建锋 吴美仁 张伟 JIANG Qibao;OUYANG Yongpeng;ZHANG Jingruo;RAO Jianfeng;WU Meiren;ZHANG Wei(10^(th) Geological Party of Jiangxi Bureau of Geology,Yingtan 335001,Jiangxi,China;School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China)

机构地区：[1]江西省地质局第十地质大队,江西鹰潭335001 [2]中国地质大学(北京)地球科学与资源学院,北京100038

出　　处：《西北地质》2022年第3期326-334,共9页Northwestern Geology

基　　金：江西省重大科技研发专项“江西省土壤重金属污染源解析及安全利用关键成套技术研发与应用”(20194ABC28010)资助成果。

摘　　要：为了解江西省贵溪市水系沉积物中重金属含量及污染程度,笔者收集了该地区600个1∶20万水系沉积物测量数据。对水系沉积物中各重金属含量进行统计分析,结合研究区地质体分布特征,笔者认为重金属高值区的形成与地质背景密切相关。地积累指数显示贵溪南部水系沉积物中Pb重金属污染程度较高,分析认为该区Pb污染主要由燕山期火山岩富含Pb元素引起。潜在生态危害指数法显示研究区Hg、Cd 2种重金属潜在生态危害较高。研究结果对该区域的环境污染治理和土地规划具有参考意义。In order to reveal the content and pollution degree of heavy metal in stream sediments in Guixi city,Jiangxi Province,this paper collected 600 data sets of 1∶200000 sediments measurement in Guixi city.Combined with the distribution characteristics of geological bodies in the study area,it is considered that the formation of high value areas of heavy metals is closely related to the geological background.Content of heavy metals in sediments were statistically analyzed,the Geo-accumulation Index indicated that the heavy metal pollution of Pb in the stream sediments of the southern Guixi is higher.The author analyzes that Pb pollution in this area was come from Yanshanian volcanic rock.The Potential Ecological Risk Index indicated that the potential ecological hazards of Hg and Cd in the study area were higher.The research results have reference significance for environmental pollution control and land planning in this area.

关 键 词：水系沉积物 重金属污染 地积累指数 潜在生态危害指数 贵溪 

分 类 号：P736.41[天文地球—海洋地质]