人民黄河2024，Vol.46Issue(3)：80-84,5.DOI:10.3969/j.issn.1000-1379.2024.03.015
汾河中游底泥重金属分布特征与来源解析
Distribution Characteristics and Source Analysis of Heavy Metals in Sediments of the Middle Reaches of Fenhe River
摘要
Abstract
In order to understand the distribution of heavy metal pollution in bottom mud and reveal the pollution sources in the middle rea-ches of the Fenhe River,the section of the river from the inlet of Ciyao River to the 2 km below the inlet of Wenyu River was selected as the research object,a total of 35 sediment samples(sediment depth 0-70 cm)were collected from 5 sections.It analyzed its vertical distribution characteristics along the river channel and revealed the source of pollution by using principal component analysis(PCA)and positive definite matrix factor analysis(PMF).The results show that the heavy metals(Hg,Cu,Pb,Cr and Ni)in the sediment of the middle reaches of the Fenhe River are generally enriched at a depth of 40-70 cm,the content at 40-70 cm depth is 1.02-2.82 times that at 0-40 cm depth and its vertical distribution may be related to the history of local industrial pollution.By analyzing the distribution characteristics and sources of sedi-ment from 0 to 40 cm deep along the river course,it is found that the distribution trend of the five heavy metals is similar along the river course,and the content of the five heavy metals appears large values at the inlet of Ciyao River into Fenhe and the inlet of Wenyu River into Fenhe.The content of Pb and Hg exceeds the standard seriously,which are 1.94 and 3.91 times of the local soil background value respective-ly,and the maximum value appears at the inlet of Wenyu River into Fenhe River.Heavy metals Pb,Cr and Ni are mainly from industrial pro-duction,Cu is mainly from industrial production and partly from algae accumulation and Hg is mainly from algae accumulation and partly from industrial production.关键词
底泥/重金属/垂向分布/沿河道分布/来源/汾河中游Key words
bottom mud/heavy metal/vertical distribution/distributed along the river/source/middle reaches of Fenhe River分类
资源环境引用本文复制引用
任晶晶,付兴涛..汾河中游底泥重金属分布特征与来源解析[J].人民黄河,2024,46(3):80-84,5.基金项目
山西省水利科学技术与推广项目(2021LS032) （2021LS032）
山西省科技创新人才团队专项(202204051002027) （202204051002027）
山西省基础研究计划项目(202203021221050) （202203021221050）
