环境保护科学2024，Vol.50Issue(6)：58-67,10.DOI:10.16803/j.cnki.issn.1004-6216.202309044
基于PMF模型的兰州市城关区VOCs来源解析研究
Source analysis of VOCs in Chengguan District of Lanzhou based on PMF model
摘要
Abstract
To explore the pollution characteristics and sources of VOCs in Chengguan District of Lanzhou,the pollution characteristics of VOCs in Chengguan District of Lanzhou based on hourly VOCs component monitoring data in 2021 were analyzed.The positive matrix factorization method(PMF)was used to quantitatively analyze the sources of VOCs pollution in Chengguan District of Lanzhou.The results showed that the annual average concentration of VOCs species was 122.810 μ g/m3,and the contribution of VOCs species concentration from high to low was oxygen-containing compounds,alkanes,halogenated hydrocarbons,aromatic hydrocarbons,alkenes,and alkynes.VOCs mass concentration varied greatly in each season,showing the characteristics of high pollution in autumn and winter and low pollution in spring and summer.Most VOCs concentrations showed obvious bimodal diurnal variation in four seasons.The PMF source analysis results showed that there were 5 types of VOCs pollution sources in the whole year,with their contribution rates in descending order being solvent usage sources,vehicle exhaust sources,fixed combustion sources,process sources,and oil and gas volatilization sources.There were 5 types of pollution sources in spring,3 types in summer,4 types in autumn,and 5 types in winter,of which the contribution of each pollution source in summer was the source of solvent use,vehicle exhaust source and process source,and the contribution of each pollution source in winter was the source of solvent use,fixed combustion source,process process source,oil and gas volatilization source and vehicle exhaust source.关键词
大气挥发性有机物(VOCs)/PMF模型/污染特征/来源解析Key words
atmospheric volatile organic compounds(VOCs)/PMF model/pollution characteristics/source analysis分类
资源环境引用本文复制引用
王书苏,万雨勤,刘浩天,刘永乐,仝纪龙..基于PMF模型的兰州市城关区VOCs来源解析研究[J].环境保护科学,2024,50(6):58-67,10.基金项目
国家自然科学基金委项目(42075174) （42075174）
技术开发项目(LZSH-2024-JS-31) （LZSH-2024-JS-31）
