德阳市2023年6-9月VOCs源分布与臭氧形成
VOCs Source Distribution and Ozone Formation in Deyang City from June to September in 2023
王春艳 1吴加禄 1关垚 2高韦韦1
作者信息
- 1. 四川省德阳生态环境监测中心站,四川德阳 618000
- 2. 河北先河环保科技股份有限公司,河北石家庄 051000
- 折叠
摘要
对德阳市 2023 年 6-9月臭氧及其前体物质NO2、VOCs的气象条件和监测数据进行了分析,6-9 月德阳VOCs平均浓度为 39.52 ppbv.臭氧浓度的日时间序列变化呈单峰型分布,在 16∶00-18∶00 时达到峰值.此次臭氧重污染基本伴有高温、低湿、低风速等气象条件.采用正矩阵分解(PMF)受体模型进行VOCs源解析.移动源、固定燃烧源和工艺过程源是VOCs的主要来源,对VOCs的贡献率分别为 21.00%、17.40%和 14.96%.臭氧生成潜势(OFP)值表明,主要活性物质为OVOCs和烯烃,以丙醛和乙烯为代表.
Abstract
The meteorological conditions and monitoring data of ozone and its precursors NO2,VOCs in Deyang City June-September 2023)were analyzed.The average VOCs concentration in Deyang from June to September was 39.52 ppbv.The daily time series of ozone concentration showed a unimodal distribution and reached its peak at 16∶00-18∶00.The ozone heavy pollution is basically accompanied by high temperature,low humidity,low wind speed and other meteorological conditions.The positive matrix decomposition(PMF)receptor model was used for VOCs source analysis.Mobile source,fixed combustion source and process process source were the main sources of VOCs,contributing 21.00%,17.40%and 14.96%to VOCs,respectively.The ozone formation potential(OFP)values showed that the main active substances were OVOCs and olefin,represented by propionaldehyde and ethylene.
关键词
VOCs/臭氧生成潜势/源解析/臭氧Key words
VOCs/ozone generation potential/source apportionment/ozone引用本文复制引用
出版年
2024
NETL
NSTL
万方数据