玛纳斯河流域地表水重金属分布特征及风险评价
Distribution characteristics and risk assessment of heavy metals in surface water of the Manas river basin
田兵兵 1刘丰羽 1来志庆 1王俊启 1宫姝逸 1李敏 1童延斌1
作者信息
- 1. 石河子大学化学化工学院,环境监测与污染物控制兵团重点实验室,新疆石河子 832003
- 折叠
摘要
为了解玛纳斯河流域地表水重金属特征,本文选取Zn,As,Cr,Cu,Ni,Pb,Cd,Hg 8种重金属元素,通过单因子污染指数、内梅罗综合污染指数和水体健康风险评价模型等方法评估了水体中重金属的污染状况、潜在风险及可能的来源.结果表明,研究区内的重金属含量水平大小顺序为:Zn＞As＞Cr＞Cu＞Ni＞Pb＞Cd＞Hg,整个玛河流域重金属污染水平低.致癌重金属Cr,As,Cd是玛河流域水体污染的主要污染物.玛河流域水体中Cd,Ni,Cu,Cr,Pb,Zn污染来源于流域内盛行的养殖、农业、工业产业的人为污染源;As的污染来源于成土母质自然污染源.
Abstract
To better understand the characteristics of heavy metals in the surface water of the Manas river basin,eight heavy metal elements,i.e.,Zn,As,Cr,Cu,Ni,Pb,Cd and Hg,were analyzed.These elements were subjected to various water health risk assessment models and methods,including the single-factor pollution index and the Nemerow comprehensive pollution index which help assess the pollution status,potential risks and possible sources of heavy metals in water bodies.Results revealed that the level of heavy metal content in the study area followed the order Zn＞As＞Cr＞Cu＞Ni＞Pb＞Cd＞Hg.Moreover,the heavy metal pollution level in the entire Manas river basin was observed to be low,and the carcinogenic heavy metals Cr,As and Cd were the main water pollutants in the basin.The pollution of Cd,Ni,Cu,Cr,Pb and Zn in the Manas river basin was attributed to human sources in aq-uaculture,agriculture and industrial industries,which were prevalent in the basin.Further,the pollu-tion of As was attributed to the natural sources of soil-forming parent materials.
关键词
玛河流域/重金属元素/健康风险/可能来源Key words
Manas river basin/heavy metal elements/health risk/possible sources引用本文复制引用
基金项目
国家重点研发计划(2016YFC0400704)
石河子大学新疆兵团化工绿色过程重点实验室开放基金(KF201803)
石河子大学双一流入职博士科研启动专项(SHYL-BQ201802)
石河子大学高层次人才启动基金(RCZK201829)
出版年
2024
NETL
NSTL
万方数据