中国资源综合利用2025，Vol.43Issue(4)：208-216,9.DOI:10.3969/j.issn.1008-9500.2025.04.059
2023年1-2月达州市NO2污染特征及潜在源区分析
Analysis of NO2 Pollution Characteristics and Potential Source Areas in Dazhou City from January to February 2023
邓小函 1江慧娴 1王金星1
作者信息
- 1. 四川省达州生态环境监测中心站,四川 达州 635000
- 折叠
摘要
Abstract
Based on the automatic monitoring data of NO2 concentration in Dazhou city from January to February 2023,the spatiotemporal distribution characteristics of NO2 concentration in Dazhou city are analyzed,and the Potential Source Contribution Factor method(PSCF)is used to analyze the cross regional transmission sources of NO2 pollution in Dazhou city.The results show that the cumulative concentration of NO2 in Dazhou city from January to February 2023 is 45.7 μg/m3,an increase of 33.6%year-on-year.Compared with most cities in Sichuan province,the NO2 concentration in Dazhou city is consistently high throughout the year.The daily variation of NO2 indicates that vehicle exhaust may be one of the important contributing sources of nitrogen oxides.The hourly variation of NO2 indicates that the conversion of NO2 and O3 is relatively insignificant,and the outlier phenomenon is prominent during the evening peak.In January and February 2023,among the four national control stations in Dazhou city,the NO2 concentration at the Dachuan Government Hotel was the highest(52.6 μg/m3),the pollution characteristic radar map indicated that the regional pollution type was typical motor vehicle exhaust pollution.In January and February 2023,NO2 pollution in Dazhou city was greatly affected by regional transmission,and potential pollution sources were mainly distributed in long-distance areas such as the main urban area of Chongqing-Yuxi and Jingzhou-Yichang in Hubei province.关键词
NO2/污染特征/潜在源贡献因子法(PSCF)/达州市Key words
NO2/pollution characteristics/Potential Source Contribution Factor method(PSCF)/Dazhou city分类
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邓小函,江慧娴,王金星..2023年1-2月达州市NO2污染特征及潜在源区分析[J].中国资源综合利用,2025,43(4):208-216,9.
