某河段重金属空间分布及污染评价  

Spatial Distribution and Pollution Assessment of Heavy Metals in a Certain Stream Segment

作　　者：陈佳伟 笪春年[1,2] CHEN Jia-wei;DA Chun-nian(Hefei University,Hefei,Anhui 230601;Anhui Collaborative Innovation Center for Environmental Pollution Prevention and Ecological Restoration,Hefei,Anhui 230601)

机构地区：[1]合肥学院,安徽合肥230601 [2]安徽省环境污染防治与生态修复协同创新中心,安徽合肥230601

出　　处：《怀化学院学报》2023年第5期30-36,共7页Journal of Huaihua University

基　　金：长江水环境教育部重点实验室开放课题“长江(安徽段)沉积柱中典型持久性有机污染物的赋存特征状况及历史演化规律”(YRWEF202001)。

摘　　要：为了解某河段水体中可溶态重金属空间分布特征及污染情况,在该河段选取10个监测断面采集水样,测定其中7种重金属元素(Cu,Pb,Zn,Cr,Cd,Mn,Fe)的含量,分析重金属元素的空间分布情况,并对该河段水体污染情况进行评价。结果表明,该河段重金属元素在水深不同处浓度相差不大,该河段水上下层混合能力强。重金属元素浓度沿河分布有着较大的差异性,主要是受不同地区人类的日常生活和工业生产的影响。重金属污染评价的结果表明,该河段水体大部分重金属含量都符合地表水三类标准,总体水质较好,其中元素Zn、Cd在部分采样点含量较高,仍需对该河段水体重金属问题关注和防范。In order to understand the spatial distribution characteristics and pollution status of dissolved heavy metals in a certain section of a river,water samples were collected from 10 monitoring sections in the river.The concentrations of seven heavy metal elements(Cu,Pb,Zn,Cr,Cd,Mn,Fe)were determined,and the spatial distribution of these elements was analyzed.Furthermore,an assessment of water pollution in the river section was conducted.The results indicate that the concentrations of heavy metal elements in the river section do not vary significantly with water depth,indicating strong mixing capability between the upper and lower layers of water.There are significant differences in the distribution of heavy metal concentrations along the river,primarily influenced by human daily life and industrial production in different areas.The assessment of heavy metal pollution in the water reveals that most of the heavy metal concentrations in the river section comply with the Class III surface water standards,indicating a generally good water quality.However,high concentrations of Zn and Cd were found at some sampling points,highlighting the need for attention and prevention of heavy metal issues in the river section.

关 键 词：重金属 空间分布 污染评价 

分 类 号：X502[环境科学与工程—环境工程]