2020年徐州市区PM_(2.5)和PM_(10)污染特征分析  

Analysis of PM_(2.5)and PM_(10)Pollution Characteristics in Urban Area of Xuzhou in 2020

作　　者：孙瑞 SUN Rui(Xuzhou Environmental Monitoring Center of Jiangsu Province,Xuzhou 221000,China)

机构地区：[1]江苏省徐州环境监测中心,江苏徐州221000

出　　处：《中国资源综合利用》2022年第8期176-179,共4页China Resources Comprehensive Utilization

基　　金：基于海量大气环境监测数据的徐州秋冬季大气重污染追因及应急减排联动机制研究(KC20057)。

摘　　要：环境空气自动监测站能够连续自动在线监测SO_(2)、NO_(2)、O_(3)、CO、细颗粒物(PM_(2.5))和可吸入颗粒物(PM_(10))等参数。基于2020年1月1日至12月31日国控站点的六参数连续监测数据,本文研究了徐州市区PM_(2.5)和PM_(10)浓度的季节和月份变化特征。结果表明,徐州市区空气质量全年以优良为主,优良率为71.9%,但颗粒物污染仍较重,PM_(2.5)、PM_(10)超标率分别为15.2%、9.4%。2020年,徐州市区PM_(2.5)和PM_(10)浓度分别为50μg/m^(3)、86μg/m^(3),是国家二级标准限值的1.43倍、1.23倍;PM_(2.5)和PM_(10)污染呈现出季节性变化和月度变化规律,冬季污染最重,夏季相反;PM_(2.5)和PM_(10)浓度月变化曲线呈U形,12月和1月最高,7月和8月最低;徐州市区PM_(2.5)/PM_(10)年均值为0.58,冬季(0.74)高于年均值,表明冬季PM_(2.5)贡献较大,冬季仍是空气质量管控关键时期。The ambient air automatic monitoring station can continuously and automatically monitor parameters such as SO_(2),NO_(2),O_(3),CO,fine particulate matter(PM_(2.5))and inhalable particulate matter(PM_(10)).Based on the six-parameter continuous monitoring data from the state-controlled site from January 1 to December 31,2020,this paper studies the seasonal and monthly variation characteristics of PM_(2.5)and PM_(10)concentrations in the urban area of Xuzhou.The results show that the air quality in the urban area of Xuzhou is mainly good throughout the year,with an excellent and good rate of 71.9%,but the particulate matter pollution is still relatively heavy,and the exceeding rates of PM_(2.5)and PM_(10)are 15.2%and 9.4%,respectively.In 2020,the concentrations of PM_(2.5)and PM_(10)in the urban area of Xuzhou were 50μg/m^(3)and 86μg/m^(3),respectively,which were 1.43 times and 1.23 times the national secondary standard limits;the pollution of PM_(2.5)and PM_(10)showed seasonal and monthly changes,with the most serious pollution in winter and the opposite in summer;the monthly variation curves of PM_(2.5)and PM_(10)concentrations were U-shaped,with the highest in December and January and the lowest in July and August;the annual average of PM_(2.5)/PM_(10)in the urban area of Xuzhou was 0.58,and the winter(0.74)was higher than the annual average,indicating that the PM_(2.5)contribution in winter was large,and winter was still a critical period for air quality control.

关 键 词：徐州市区 PM_(2.5) PM_(10) 污染特征 

分 类 号：X5[环境科学与工程—环境工程]