摘要
为研究北京通惠河底泥重金属污染风险,选取10个采样点对通惠河底泥重金属进行调查,并分析其来源。Hg、Zn、Cu、Cd、Cr、Pb、Ni含量均超过北京市土壤地球化学背景值,其中Hg超标最严重;重金属变异系数可以反映人类活动对底泥的影响,其中Hg、Cd、As变异系数较大,受人类活动干扰较大;Ni、Cr变异系数较小,受人类活动干扰较小;研究河段采样点S4、S7以及Hg的地积累指数、生物毒性风险、潜在生态风险指数较大;Pearson相关性和主成分分析表明通惠河底泥重金属主要来自交通运输。
In order to study the pollution risk of heavy metals in the bottom sediment of Tonghui River in Beijing,10 sites were selected to investigate the heavy metals in the bottom sediment of Tonghui River and analyzd their sources.The contents of Hg,Zn,Cu,Cd,Cr,Pb and Ni all exceed the background values of river sediment in Beijing,and Hg is the most serious.The variation coefficient of heavy metals can reflect the influence of human activities on sediment.Hg,Cd and As have larger variation coefficients and are greatly disturbed by human ac⁃tivities,while Ni and Cr have smaller variation coefficients and are little disturbed by human activities.The soil accumulation index,biotoxic⁃ity risk and potential ecological risk index of S4,S7 and Hg samples in the study reach are larger.Pearson correlation analysis and principal component analysis show that the pollution source of Tonghui River mainly comes from transportation.
作者
韩金龙
杨兰琴
王培京
王昊
郁爽
HAN Jinlong;YANG Lanqin;WANG Peijing;WANG Hao;YU Shuang(School of Architectural Engineering,North China University of Technology,Tangshan 063009,China;Beijing Institute of Water Science and Technology,Beijing 100048,China;Beijing Key Laboratory of Watershed Water Environment and Ecological Technology,Beijing 100048,China)
出处
《人民黄河》
CAS
北大核心
2022年第4期107-111,共5页
Yellow River
基金
国家水体污染控制与治理科技重大专项(2017ZX102,2017ZX07102-104)。
关键词
重金属
风险评价
溯源
通惠河
heavy metals
risk assessment
traceability
Tonghui River
