摘要
通过对贵州省各市(州)大气污染物观测资料分析表明:PM_(2.5)、PM_(10)、SO_(2)、NO_(x)年均浓度逐年降低,而O3-8h max出现逐年增高。2017年PM_(2.5)超过国家《环境空气质量标准》(GB 3095-2012)的二级标准限值的天数排前三位分别为六盘水市、遵义市和毕节市,为27、21和22 d,基本出现在冬季;贵阳市超标16 d,超标率为4.1%,最高浓度为107μg/m^(3)。对PM_(2.5)进行溯源分析表明:贵阳市、遵义市和六盘水市主要来自于本地源贡献,分别占了85%、93%和90%。本地排放源中,贵阳市主要是移动源、道路扬尘、建筑扬尘,贡献比例分别为26%、22%、20%;遵义市主要是居民燃煤和移动源,贡献比例分别为25%和20%;六盘水市主要是工业源和居民燃煤,贡献率分别为28%和20%。不同季节气团传输存在差异,并且不同城市在相同季节的传输也存在差异。中长距离气团传输主要来自于成渝地区,短距离主要是本地传输。溯源及气团传输分析表明,成渝地区出现大气污染时,气团传输对贵州省PM2.5浓度有一定传输贡献。
To study the characteristics of atmospheric pollutants and emission sources in the urban area of Guizhou province,the detailed atmospheric pollutant observation data and atmospheric pollutant emission inventory were collected and analyzed in this study.The results showed that the annual average concentration of PM_(2.5),PM_(10),SO_(2),and NOx reduced in recent years,but that of O3-8nmaxincreased.In 2017,the cities of Liupanshui,Zunyi and Bijie ranked the top three of the daily average concentration of PM2.5which exceeded the secondary limited values of the National Ambient Air Quality Standards(NAAQS)(GB 3095—2012),corresponding to the 27,21 and 22 days,which mainly appeared in winter.The PM2.5concentration of Guiyang had 16 days exceeding the secondary value of NAAQS.The exceeding standard rate was 4.1%and peaked at 107μg/m^(3).The sources apportionment analysis of PM_(2.5)showed that the local sources contribution accounted for 85%,93%and 90%in Guiyang,Zunyi and Liupanshui,respectively.Among the local emission sources,the mobile source,road dust source and construction dust source contribution respectively accounted for 26%,22%and 20%in Guiyang;the residential coal source and mobile source respectively contributed 25%and 20%in Zunyi;the industrial sources and residential coal respectively contributed 28%and 20%in Liupanshui.There are differences in air mass transmission in different seasons,and also differences in air mass transmission in different cities in the same season.Mid-long distance air mass mainly comes from Chengdu-Chongqing area,while short-distance air mass mainly comes from local emission.The sources apportionment of air mass transmission showed that when there was air pollution in Chengdu-Chongqing,the air mass transmission contributed to the increase of PM2.5concentration in Guizhou Province.
作者
徐鹏
孙海燕
李清
费学海
张春辉
刘凯
王显钦
杨爱江
XU Peng;SUN Haiyan;LI Qing;FEI Xuehai;ZHANG Chunhui;LIU Kai;WANG Xianqin;YANG Aijiang(College of Resources and Environmental Engineering,Key Laboratory of Karst Georesources and Environment,Ministry of Education,Guizhou Karst Environmental Ecosystems Observation and Research Station,Ministry of Education,Guizhou University,Guiyang 550025,China;The Blue Technology Limited Company of Guizhou,Guiyang 550081,China;Guiyang Environmental Information Center,Guiyang 550081,China)
出处
《贵州大学学报（自然科学版）》
2023年第1期101-111,共11页
Journal of Guizhou University:Natural Sciences
基金
贵州省科技计划项目(黔科合基础[2020]1Y175,黔科合基础[2020]1Y073,黔科合支撑[2022]一般209)
贵州大学引进人才科研项目(贵大人基合字(2018)28号)。
关键词
大气污染物
浓度特征
溯源解析
气团传输
atmospheric pollutants
characteristics of atmospheric pollutants concentration
source apportionment
air mass transmission
作者简介
徐鹏(1988-),男,讲师,博士,研究方向:大气环境与大气化学,E-mail:xupeng@gzu.edu.cn;通讯作者:杨爱江,E-mail:yangaij8818@sina.com.
