2023年荆州市大气污染物特征及潜在源分析  

Characteristics and potential sources of air pollutants in Jingzhou City in 2023

作　　者：陈建文 杜承冬 张明涛 CHEN Jian-wen;DU Cheng-dong;ZHANG Ming-tao(Jingzhou Ecological Environment Monitoring Center,Hubei Provincial Department of Ecology and Environment,Jingzhou,Hubei 434000,China)

机构地区：[1]湖北省生态环境厅荆州生态环境监测中心,湖北荆州434000

出　　处：《环境与健康杂志》2025年第2期160-163,共4页Journal of Environment and Health

摘　　要：目的了解2023年荆州市大气污染物特征和潜在源,为大气污染防控治理提供参考依据。方法收集2023年荆州市大气污染物(PM_(2.5)、PM_(10)、O_(3)、NO_(2)、SO_(2)和CO)浓度数据,对空气质量等级及大气污染物特征进行描述性分析,探讨不同时间尺度下的污染变化趋势。结果从大气污染物浓度年变化可知,优、良天数分别为67 d和213 d,总占比为76.71%。从大气污染物浓度季节和月变化可知,PM_(2.5)、PM_(10)和NO_(2)浓度先减少后增加,呈现“夏低冬高”的变化分布,在1月达到最大值,分别为118、140和32μg/m3;O_(3)浓度先增加后急剧减少,呈现“夏高冬低”的变化分布,在8月达到最大值139μg/m^(3);而SO_(2)和CO浓度较低,且无明显变化。从首要污染物分布可知,春、夏、秋季的首要污染物以O_(3)为主,且在夏季达到最大,天数占比为79.35%;冬季(12—2月)首要污染物以PM_(2.5)为主,天数占比为86.67%。结论大气污染物浓度和首要污染物与季节和月份相关,建议根据时间变化进行针对性的空气质量治理。Objective To understand the characteristics and potential sources of air pollutants in Jingzhou City in2023,and provide the reference basis and direction for air pollution prevention and control.Methods The concentration data of air pollutants(PM_(2.5),PM_(10),O_(3),NO_(2),SO_(2)and CO)in Jingzhou City in 2023 were collected to conduct a descriptive analysis of air quality grade and characteristics of air pollutants,and to explore the change trend under different time scales.Results According to the annual change of atmospheric pollutant concentration,the number of good and good days was 67 and 213,respectively,accounting for 76.71%.From the seasonal and monthly changes of atmospheric pollutant concentrations,it could be seen that the concentrations of PM_(2.5),PM_(10)and NO_(2)decreased first and then increased,showing a“low summer and high winter”variation distribution,reaching the maximum values in January,which were 118μg/m^(3),140μg/m^(3)and 32μg/m^(3),respectively.O_(3)concentration increased first and then sharply decreased.The concentration of SO_(2)and CO was low in August and reached a maximum of 139μg/m^(3),while the concentration of SO_(2)and CO was low and had no significant change.According to the distribution of primary pollutants,O_(3)was the predominant pollutant in spring,summer and autumn,and reached the maximum in summer,accounting for 79.35% of the total number of days.In winter(December to February),the main pollutant was PM_(2.5),accounting for 86.67% of the days.Conclusion The concentration of air pollutants and primary pollutants are strongly related to season and month,so it is recommended to consider targeted time-sharing air quality control.

关 键 词：大气污染物 首要污染物 污染特征 

分 类 号：R122.2[医药卫生—环境卫生学]