摘要
于2017-2018年对临安区不同功能区的道路进行道路降雨径流采样,分析降雨量、季节变化和街尘对临安区道路降雨径流重金属污染特征的影响,并运用主成分分析法进行重金属源解析。结果表明,临安区道路降雨径流污染较严重;降雨强度越大,重金属浓度下降更快且末期浓度更低;道路降雨径流中Cu呈现春夏季大于秋冬季,Zn、Cr呈现秋冬季大于春夏季,Pb、Ni呈现冬春季大于夏秋季的季节变化趋势;临安区街尘与道路降雨径流重金属污染存在一定的相关性;主成分分析表明重金属污染源主要为以电线电缆为主的工业活动和汽车损耗。
From 2017 to 2018,road rainfall runoff samples were taken from roads in different functional areas of Lin’an District,and the effects of rainfall,seasonal changes and street dust on heavy metal pollution characteristics of road rainfall runoff in Lin’an District were analyzed.The pollution source of heavy metal were identified based on principal component analysis.The results showed that the road rainfall runoff in the Lin’an District was seriously polluted.The higher the rainfall intensity,the faster the heavy metal concentration decreased and the lower the terminal concentration.The road rainfall runoff showed Cu in spring and summer was greater than in autumn and winter.Zn,Cr in autumn and winter were greater than those in spring and summer.Pb,Ni in winter and spring were greater than those in summer and autumn.There was a certain correlation between street dust and heavy metal pollution of road rainfall runoff in Lin’an District.Principal component analysis showed that heavy metal pollution sources were mainly industrial activities dominated by wires and cables and automobile losses.
作者
蔡成豪
许立宏
朱方伦
洪家兴
苗涵倩
龚苗苗
方晓波
CAI Chenghao;XU Lihong;ZHU Fanglun;HONG Jiaxing;MIAO Hanqian;GONG Miaomiao;FANG Xiaobo(School of Environmental and Resources Science,Zhejiang A&F University,Hangzhou Zhejiang 311300)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2020年第2期218-222,共5页
Environmental Pollution & Control
基金
浙江省自然科学基金资助项目(No.LY15D010005)
关键词
道路径流
重金属
季节性
主成分分析
街尘
road runoff
heavy metal
seasonal
principal component analysis
street dust
