摘要
为研究广安市城区大气细颗粒物污染特征及成因,选取2017~2018年广安市委国控站点四个季度监测数据,运用移动式在线单颗粒气溶胶飞行时间质谱仪(SPAMS)对广安市大气细颗粒物污染特征、季节性变化规律开展源解析。主要结果为:(1)2017~2018年广安市大气细颗粒物污染源贡献率季节性差异较大,春季和秋季扬尘源贡献突出,夏季和冬季为工艺过程源、燃煤源;(2)不同组分贡献率季节性差异不大。夏季、秋季、冬季有机碳、元素碳贡献较大,春季有机碳贡献较大;(3)冬季和夏季细颗粒物污染表现明显,颗粒物老化程度冬季>秋季>春季>夏季。研究为广安市加强大气细颗粒物污染防治研究提供参考依据,也为科学应对重污染天气提供一些借鉴意义。
In order to study the characteristics and causes of atmospheric fine particulate matter pollution in the urban area of Guang ’an city, four quarterly monitoring data of the state control station of Guang ’an Municipal Party Committee from 2017 to 2018 were selected, and the characteristics and seasonal variation of atmospheric fine particulate matter pollution in Guang ’an city were analyzed by using mobile online single particle aerosol time-of-flight mass Spectrometer(SPAMS). The main results were as follows:(1) the contribution rate of atmospheric fine particulate matter pollution sources in guang ’an city from 2017 to 2018 had a large seasonal difference, and the contribution of dust sources in spring and autumn was prominent, the contribution of process sources and coal burning sources in summer and winter was prominent.(2) There were little seasonal difference in the contribution rate of different components. The contribution rate of organic carbon and elemental carbon was larger in summer, autumn and winter, and the contribution rate of organic carbon was larger in spring.(3) Fine particulate matter pollution was obvious in winter and summer, and the aging degree of particulate matter was winter > autumn > spring > summer. This study provides a reference for guang ’an city to strengthen the prevention and control of atmospheric fine particulate matter pollution, and also provides some reference for scientific response to heavy pollution weather.
作者
舒洲
梅林德
熊文朋
陈军辉
冯小琼
SHU Zhou;MEI Lin-de;XIONG Wen-ming;CHEN Jun-hui;FENG Xiao-qiong(Ecological Environment Monitoring Center of Guang'an,Sichuan Province,Guang'an,Sichuan 638500,China;Sichuan Academy of Eco-Environmental Sciences,Chengdu 610000,China;Sichuan Qingoasis Environmental Protection Technology Co.,LTD.,Chengdu 610000,China)
出处
《四川环境》
2023年第1期80-86,共7页
Sichuan Environment
基金
四川省科技厅2022年科技创新基地(平台)和人才计划项目(2022JDR0066)。
关键词
大气细颗粒物(PM_(2.5))
污染特征
季节性变化
贡献率
Atmospheric fine particulate matter(PM_(2.5))
pollution characteristics
seasonal variation
contribution rate
