摘要
为研究东江水系河流底泥重金属污染状况,在东江主干及各个支流布置了34个采样点采集底泥,测定了Zn、Cu、Cd、Mn、Cr、Ni、Pb、Co及V九种重金属浓度。采用地累积指数法进行风险评估,应用Pearson相关性检验和主成分分析解析了这些重金属污染物的可能来源。研究结果表明,Pb、Cd、Cu是东江水系底泥中的主要污染物。不同区域底泥中重金属的浓度大小为:上游>下游>中游;支流>主干河流。地累积指数法的评价结果表明,东江水系底泥中九种重金属的污染程度大小为:Cd>Pb>Cu>Mn>Zn>Co>V>Cr>Ni,其中Pb和Cd地累积指数均大于0,分别达到偏中度污染和轻度污染。相关性检验与主成分分析结果显示,本次实验所测的九种重金属污染来源主要可以分为两类。
To study the situation of the heavy metal pollution of the Dongjiang River system.,thirty-four sediment samples are collected from the Dongjiang River system,and the concentrations of nine heavy metals including Zn,Cu,Cd,Mn,Cr,Ni,Pb,Co and V were measured.Geoaccumulation index method was used to evaluate the ecological risk of the Dongjiang River system,Pearson correlation coefficient and Principal Component Analysis method are used to analyze the source of these heavy metals.The results indicated that Pb,Cd,Cu are the main pollutants of the Dongjiang River system.The concentrations of these heavy metals in the sediments regions are:Upstream>Downstream>Midstream;Tributary>Main channel.The extent of pollution degree of these heavy metals of the Dongjiang River system are:Cd>Pb>Cu>Mn>Zn>Co>V>Cr>Ni.The results of Pearson correlation coefficient and Principal Component Analysis method showed that the nine heavy metal pollution sources measured in this experiment can be divided into two categories.
作者
林天佳
谢耀锋
许旺
王伟民
曾清怀
孙萍
李会亚
余欣繁
黎栩霞
王飞
Lin Tianjia;Xie Yaofeng;Xu Wang;Wang Weimin;Zeng Qinghuai;Sun Ping;Li Huiya;Yu Xinfan;Li Xuxia;Wang Fei(Shenzhen Ecological and Environmental Monitoring Center of Guangdong Province,Shenzhen 518049;School of Environment,Jinan University,Guangzhou 510000,China)
出处
《广东化工》
CAS
2023年第7期184-187,共4页
Guangdong Chemical Industry
基金
国家重点研发计划项目(2022YFF1301101)
东江流域水生态监测调查(20210904)。
关键词
东江水系
重金属污染
污染风险评价
河流底泥
相关性分析
Dongjiang River system
heavy metal pollution
pollution risk assessment
river sediment
correlation analysis
