北京市空气质量特征与典型区域污染源贡献分析  

Analysis of air quality characteristics and contribution of typical regional pollution sources in Beijing

作　　者：马瑞[1,2] 陈莎 樊守彬[2,3] 焦玉方 王东洋[5] MA Rui;CHEN Sha;FAN Shoubin;JIAO Yufang;WANG Dongyang(Faculty of Environment and Life,Beijing University of Technology,Beijing 100124;Beijing Municipal Research Institute of Eco-Environmental Protection,Beijing 100037;National Engineering Research Center of Urban Environmental Pollution Control,Beijing 100037;Beijing Hengshun Technology Co.,Ltd.,Beijing 101407;China North Industries Co.,Ltd.,Beijing 100053)

机构地区：[1]北京工业大学环境与生命学部,北京100124 [2]北京市生态环境保护科学研究院,北京100037 [3]国家城市环境污染控制工程技术研究中心,北京100037 [4]北京恒瞬科技有限公司,北京101407 [5]中国北方工业有限公司,北京100053

出　　处：《环境科学学报》2024年第3期317-326,共10页Acta Scientiae Circumstantiae

基　　金：北京市环科院基金项目(No.Y2023-008);促进和利用气候行动实现净零排放研究项目(No.ELEVATE-101056873)。

摘　　要：为持续改善环境空气质量,探究空气污染的来源,本研究采用SPSS、GIS、CAMx-PSAT模型对2022年北京市大气污染物浓度的时空分布相关性、区域颗粒污染物行业溯源及空间溯源进行分析.结果表明:①本次北京市PM污染出现阶梯型浓度递增现象,PM_(10)浓度呈南高北低的趋势,机动车源(20%)与工业源(50%)是主要来源;PM_(2.5)浓度呈现东南高、西北低的趋势,工业源(37%)是主要来源.②本次通州区PM_(10)质量浓度对机动车源有较高敏感性,污染过程1、2的贡献占比分别约为15%、18%.PM_(2.5)的主要来源为工业源,污染过程1、2的贡献占比分别约为37%、54%.③外地排放源(72%)是本次通州区PM_(10)污染过程1的主要来源;本地排放源(51%)是污染过程2的主要来源.外地排放源是通州区PM_(2.5)的主要来源,污染过程1、2的贡献占比分别为68%、72%.研究表明,北京市空气质量变化与污染源及区域输送相关,建议强化与周边城市的协同减排,实施精细化污染源排放管控.Using statistical product service solutions(SPSS),geographic information system(GIS),and comprehensive air quality model with extensions-particulate matter source apportionment technology(CAMx-PSAT)models,this study analyzed the spatio-temporal distribution correlation of air pollutant concentrations,regional particle pollutant industry traceability,and spatial traceability in Beijing in 2022 to improve the ambient air quality and explore the sources of air pollution.Results indicated that the particulate matter pollution in Beijing exhibited a step-wise concentration increase with PM_(10)(i.e.,aerodynamic diameter of<10.0μm)concentration showing a trend of high in the south and low in the north.The PM_(10)concentration were dominate by vehicle and industrial sources with the contribution of 20%and 50%,respectively.The PM_(2.5)(i.e.,aerodynamic diameter of<2.5μm)concentration showed a trend of high in the southeast and low in the northwest with the highest contribution from industrial sources(37%).The PM_(10)concentration in Tongzhou District showed high sensitive to vehicle sources,with the contribution of 15%and 18%for pollution processesⅠandⅡ,respectively.The dominate PM_(2.5)contributor was industrial source,with the contribution of 37%and 54%for pollution processesⅠandⅡ,respectively.Non-local sources were the dominate PM_(10)contributor during pollution processⅠin Tongzhou district with the contribution of 72%,while local sources for processⅡ(51%).Non-local sources were also the dominate PM_(2.5)contributor in Tongzhou district,with the contribution of 68%and 72%for pollution processesⅠandⅡ,respectively.The study indicates that the air quality change in Beijing is related to pollution sources and regional transportation.It is recommended to strengthen synergistic emission reduction with neighboring cities and implement refined pollution source emission control.

关 键 词：空气质量 CAMx-PSAT 源解析 溯源分析 

分 类 号：X513[环境科学与工程—环境工程]