基于成都市中心城区秋季地表径流悬浮固体与重金属浓度监测结果的多变量分析  

Multivariate analysis on the monitoring results of suspended solids and heavy metals in autumn surface runoff in the central urban area of Chengdu

作　　者：彭越[1] PENG Yue(Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission,School of Chemistry and Environment,Southwest Minzu University,Chengdu 610041,China)

机构地区：[1]西南民族大学化学与环境学院青藏高原污染控制化学与环境功能材料国家民委重点实验室,四川成都610041

出　　处：《西南民族大学学报（自然科学版）》2022年第4期386-392,共7页Journal of Southwest Minzu University(Natural Science Edition)

基　　金：2016年四川省社科规划项目(SC16B103);西南民族大学中央高校基础研究基金(2021PTJS36)。

摘　　要：为探究成都市中心城区地表径流重金属含量、空间分布特点及其影响因素,选取10个地表径流采样点,秋季降雨过程中采集水样;用重量法测悬浮固体浓度,原子吸收分光光度法测重金属镉、铅、锌、铜浓度;对监测结果做线性相关性分析、模糊聚类分析、主成分分析等多变量分析.结果表明重金属浓度与悬浮固体浓度之间具有线性相关性,其空间分布呈现向市中心递增的特点;镉和铅是监测的4种重金属中主要组分,来自生活与交通.基于以上结论提出城市水环境面污染源治理措施,为成都市公园城市建设提供参考.In order to explore the content, spatial distribution and influencing factors of heavy metals in surface runoff in the central urban area of Chengdu, 10 surface runoff sampling points were selected.Water samples were collected during autumn rainfall.The concentration of suspended solids was measured by gravimetric method, and the concentration of heavy metals cadmium, lead, zinc and copper was measured by atomic absorption spectroscopy.The monitoring results were analyzed by multivariate analysis.The results showed that there was a linear correlation between the concentration of heavy metals and the concentration of suspended solids, and its spatial distribution increased to the city center.Cadmium and lead were the main components of the four heavy metals monitored, which came from daily life and transportation.Based on the above conclusions, this paper puts forward the treatment measures of non-point pollution sources of urban water environment, so as to provide reference for the construction of Park City in Chengdu.

关 键 词：地表径流 重金属 悬浮固体 多变量分析 

分 类 号：X5[环境科学与工程—环境工程] X8