New insights into the formation of ammonium nitrate from a physical and chemical level perspective

查看全文 作　　者：Yuting [1,2]Wei;Xiao [1,2]Tian;Junbo [1,2]Huang;Zaihua [3]Wang;Bo [4]Huang;Jinxing [5,6]Liu;Jie [1,2]Gao;Danni [1,2]Liang;Haofei [7]Yu;Yinchang [1,2]Feng;Guoliang [1,2]Shi

机构地区：[1]State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control,Tianjin Key Laboratory of Urban Transport Emission Research,College of Environmental Science and Engineering,Nankai University,Tianjin 300350,China;[2]CMA-NKU Cooperative Laboratory for Atmospheric Environment-Health Research(CLAER),College of Environmental Science and Engineering,Nankai University,Tianjin 300350,China;[3]Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou 510650,China;[4]Guangzhou Hexin Instrument Co.Ltd.,Guangzhou 510530,China;[5]State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin Key Laboratory of Air pollutants Monitoring Technology,School of Precision Instrument and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China;[6]Gigantic Technology(Tianjin)Co.Ltd.,Tianjin 300384,China;[7]Department of Civil,Environmental and Construction Engineering,University of Central Florida,Orlando,FL32816,USA

出　　处：《Frontiers of Environmental Science & Engineering》索引2023年第17卷第11期,共13页

基　　金：the National Natural Science Foundation of China(No.42077191);the Fundamental Research Funds for the Central Universities(Nos.63213072,63213074);the GDAS’Project of Science and Technology Development(No.2021GDASYL-20210103058);the Guangdong Basic and Applied Basic Research Foundation(No.2022A1515012165),The Blue Sky Foundation. 摘　　要：High levels of fine particulate matter(PM_(2.5))is linked to poor air quality and premature deaths,so haze pollution deserves the attention of the world.As abundant inorganic components in PM_(2.5),ammonium nitrate(NH_(4)NO_(3))formation includes two processes,the diffusion process(molecule of ammonia and nitric acid move from gas phase to liquid phase)and the ionization process(subsequent dissociation to form ions).In this study,we discuss the impact of meteorological factors,emission sources,and gaseous precursors on NH4NO3 formation based on thermodynamic theory,and identify the dominant factors during clean periods and haze periods.Results show that aerosol liquid water content has a more significant effect on ammonium nitrate formation regardless of the severity of pollution.The dust source is dominant emission source in clean periods;while a combination of coal combustion and vehicle exhaust sources is more important in haze periods.And the control of ammonia emission is more effective in reducing the formation of ammonium nitrate.The findings of this work inform the design of effective strategies to control particulate matter pollution. 关键词：Ammonium nitrate formation Thermodynamic theory Aerosol liquid water content Source apportionment

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New insights into the formation of ammonium nitrate from a physical and chemical level perspective

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