| 马鞍山市典型O3污染过程VOCs组分特征分析 |
| Characteristics of VOCs Composition During Typical Ozone Pollution Episodes in Ma'anshan City |
| 投稿时间：2024-12-27 修订日期：2025-11-03 |
| DOI：10.19316/j.issn.1002-6002.2026.02.15 |
| 中文关键词: 臭氧 挥发性有机物 臭氧生成潜势 来源分析 |
| 英文关键词:ozone volatile organic compounds ozone formation potential source apportionment |
| 基金项目:国家重点研发计划项目(2018YFC0213800);宿州市细颗粒物与臭氧污染协同防控“一市一策”驻点跟踪研究项目(DQGG202116) |
|
| 摘要点击次数: 0 |
| 全文下载次数: 0 |
| 中文摘要: |
| 基于2023年9月5—15日马鞍山市大气环境挥发性有机物(VOCs)监测数据,开展污染特征分析和来源解析。结果表明,O3污染时段马鞍山市VOCs平均值为21.17×10-9,比污染前、污染后时段分别高21.4%和17.0%;NO2平均质量浓度为18.5 μg/m3,比污染前升高了35.9%。污染时段O3前体物(VOCs和NO2)浓度升高叠加高温(>30 ℃)、低湿(<60%)和小风(<3 m/s)等天气条件,导致O3浓度升高54.2%。VOCs组分构成显示烷烃占比最大(33.6%),其次是含氧挥发性有机物(OVOCs)和卤代烃,贡献占比分别为25.5%和21.1%;烯烃、芳香烃和OVOCs对O3生成影响较大,贡献占比均超过25%。源解析结果表明,O3污染过程中VOCs主要来自工业源(38.3%)和燃烧源(32.7%),并对臭氧生成潜势产生显著贡献(超过20%)。因此,工业和燃烧工艺的调整对马鞍山市O3及其前体物污染防控具有重要意义。 |
| 英文摘要: |
| In this study,based on the monitoring of ambient volatile organic compounds (VOCs) in Ma'anshan City from September 5 to 15,2023,the characteristics of VOCs and source appointment were analyzed.The results showed that the average concentration of VOCs during the mid-term of O3 pollution episode was 21.17×10-9 in Ma'anshan City,which was 21.4% and 17.0% higher than that in the pre-pollution and post-pollution phases,respectively.The NO2 average concentration was 18.5 μg/m3,which was 35.9% higher than the pre-pollution level.During the pollution period,elevated concentrations of O3 precursors (VOCs and NO2) combined with meteorological conditions such as high temperature (>30 ℃),low humidity (<60%),and light wind (<3 m/s),led to a 54.2% increase in O3 concentration.Composition analysis revealed that alkane constituted the largest proportion of VOCs (33.6%),followed by oxygenated volatile organic compounds (OVOCs) and halogenated hydrocarbons,contributing 25.5% and 21.1%,respectively.Alkenes,aromatic hydrocarbons,and OVOCs had significant impacts on the generation of O3,each contributing over 25%.The results of source apportionment showed that VOCs in the O3 pollution episode mainly came from industrial sources (38.3%) and combustion sources (32.7%),and contributed significantly to ozone formation potential (over 20%).Therefore,the adjustment of industrial and combustion processes is important for the prevention and control of O3 and its precursor pollution in Ma'anshan City. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
