| 摘要: |
| 为探究濮阳市大气挥发性有机物的污染特征、臭氧生成潜势以及污染来源，依据濮阳市不同功能区设置4个监测点位，使用气质联用仪对样品进行采样分析，获取监测数据。研究结果表明：濮阳市大气挥发性有机物57种PAMS物质平均浓度为32.2×10-9，居民文教区稍高于商住混合区、背景点和郊区。化学组分以烷烃浓度占比较大，约占61.1%—71.7%。对臭氧生成贡献较大的组分是芳香烃、烯烃。关键活性物种乙烯、间/对-二甲苯和甲苯的臭氧生成潜势浓度水平最高占比分别为21.6%、14.3%和11.0%。通过源解析技术确定了大气挥发性有机物主要污染来源，受不同功能区局部环境影响不同，各污染源贡献占比有所差异，其中移动源的贡献占比最大，最高占45.8%，石油化工源和天然源的贡献占比相对较小，分别约占6.6%—15.6%、0—18.5%。 |
| 关键词: 濮阳市 挥发性有机物 污染特征 臭氧生成潜势 源解析 |
| DOI： |
| 分类号: |
| 基金项目:濮阳市重大科技计划项目（No.200119） |
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| Pollution Characteristics and Source Apportionment of Atmospheric Volatile Organic Compounds in different functional areas of Puyang City |
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| Abstract: |
| In order to explore the pollution characteristics, and ozone formation potentials and source apportionment of atmospheric volatile organic compounds in Puyang City, four monitoring sites were set up in different functional areas of Puyang City, and GC-MS was used to sample and analyze the samples to obtain monitoring data. The research showed: The average concentration of PAMS were 32.2×10-9,residential cultural and educational areas were slightly higher than mixed commercial and residential areas,background point and suburb.Alkane accounted for a relatively large proportion, approximately 61.1%—71.7%. Aromatic hydrocarbons and olefins were components that contribute significantly to ozone generation. The key active species were ethylene, m/p-xylene, and toluene, their ozone formation potential concentration levels accounted for 21.6%, 14.3%, and 11.0%, respectively. The main sources of atmospheric volatile organic compounds pollution were identified through source apportionment technology,affected by different local environments in different functional areas,there were differences in the proportion of pollution source contributions,with mobile sources accounting for the largest proportion, with the highest contribution accounting for 45.8%, the contributions of petrochemical and natural sources were relatively small, accounting for approximately 6.6%—15.6% and 0—18.5%, respectively. |
| Key words: Puyang City VOCs pollution characteristics ozone formation potentials source apportionment |
