红河州蒙自市大气VOC_(S)污染特征及其对臭氧生成贡献的研究  

Research on the Characteristics of VOC_(S)Pollution and its Contribution to the Ozone Generation in Mengzi City,Honghe Prefecture

作　　者：李琴芳 王微微 徐嘉瑞 LI Qin-fang;WANG Wei-wei;XU Jia-rui(HongheInformation and Monitoring Center of Ecology and Environment,Honghe Yunnan 661100,China)

机构地区：[1]红河州生态环境信息监控中心,云南蒙自661100

出　　处：《环境科学导刊》2025年第2期53-60,共8页Environmental Science Survey

基　　金：中央财政资金项目:红河州生态环境信息化建设项目(使用2020年度中央大气污染防治资金)。

摘　　要：为研究红河州蒙自市挥发性有机物(VOC_(S))化学组分及来源,于2021年4月14—19日利用离线监测仪器对红河州蒙自市VOC_(S)化学组分进行连续观测。结果表明:通过蒙自市观测期内VOC_(S)质量分数分析,高碳烷烃是挥发性有机物中最主要的成分;通过对蒙自市臭氧生成潜势(OFP)分析,非甲烷碳氢化合物活性最高,对OFP贡献为77.71%,其中正丁烯为OFP最大物种;据臭氧生成敏感性分析可得,包括蒙自市在内的红河州大部分区域属于VOC_(S)控制区;据日变化分析,VOC_(S)组分整体呈“夜高昼低”趋势;通过源解析,表明蒙自市VOC_(S)主要来源为工业排放源。In order to study the chemical components and sources of volatile organic compounds(VOC_(S))in Mengzi City,Honghe Prefecture,offline monitoring equipment was used to continuously observe the chemical components of VOC_(S)in Mengzi City from April 14 to April 19,2021.The results showed that through the analysis of VOC_(S)mass fraction in Mengzi City,high-carbon alkanes were the most important components of volatile organic compounds;through the analysis of ozone generation potential(OFP)in Mengzi City,non-methane hydrocarbons had the highest activity,The contribution to OFP was 77.71%,of which n-butene was the largest species of OFP;according to the sensitivity analysis of ozone generation,most areas of Honghe Prefecture,including Mengzi City,belong to the VOC_(S)control area;The overall trend was"high at night and low in the daytime";the source analysis results showed that the main source of VOC_(S)in Mengzi City was industrial emission source.

关 键 词：挥发性有机物 反应活性 污染特征 源解析 蒙自市 

分 类 号：X51[环境科学与工程—环境工程]