Secondary organic aerosol formation from straw burning using an oxidation flow reactor

作     者：Hui Wang Song Guo Zhijun Wu Kai Qiao Rongzhi Tang Ying Yu Weizhao Xu Wenfei Zhu Liwu Zeng Xiaofeng Huang Lingyan He Mattias Hallquist Hui Wang;Song Guo;Zhijun Wu;Kai Qiao;Rongzhi Tang;Ying Yu;Weizhao Xu;Wenfei Zhu;Liwu Zeng;Xiaofeng Huang;Lingyan He;Mattias Hallquist

作者机构：State Key Joint Laboratory of Environmental Simulation and Pollution ControlInternational Joint Laboratory for Regional Pollution ControlMinistry of Education(IJRC)College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyNanjing University of Information Science&TechnologyNanjing 10044China Key Laboratory for Urban Habitat Environmental Science and TechnologyCollege of Environment and EnergyPeking University Shenzhen Graduate SchoolShenzhen 518055China Department of Chemistry and Molecular BiologyAtmospheric ScienceUniversity of GothenburgSE-41296 GothenburgSweden 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2022年第34卷第4期

页      面：249-258页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：supported by National Natural Science Foundation of China(Nos.51636003,91844301,41977179) Beijing Municipal Science and Technology Commission(No.Z201100008220011) Natural Science Foundation of Beijing(No.8192022) China Postdoctoral Science Foundation(No.2020M680242) the Open Research Fund of State Key Laboratory of Multi-phase Complex Systems(No.MPCS-2021-D-12) 

主　　题：Gothenburg:Potential Aerosol Mass(Go:PAM)reactor Wheat straw burning Flaming Non-flaming Secondary organic aerosol formation 

摘      要：Herein,we use an oxidation flow reactor,Gothenburg:Potential Aerosol Mass(Go:PAM)reactor,to investigate the secondary organic aerosol(SOA)formation from wheat straw *** burning emissions are exposed to high concentrations of hydroxyl radicals(OH)to simulate processes equivalent to atmospheric oxidation of 0-2.55 *** volatile organic compounds(VOCs)were investigated,and particles were measured before and after the Go:PAM *** influence of water content(i.e.5%and 11%)in wheat straw was also *** burning stages,the flaming stage,and non-flaming stages,were *** particle emission factors(EFs)at a water content of 11%(~3.89 g/kg-fuel)are significantly higher than those at a water content of 5%(~2.26 g/kg-fuel)during the flaming ***,the water content showed no significant influence at the non-flaming *** of aromatics at a non-flaming stage(321.8±46.2 mg/kg-fuel)are larger than that at a flaming stage(130.9±37.1 mg/kg-fuel).The OA enhancement ratios increased with the increase in OH exposure at first and decreased with the additional increment of OH *** maximum OA enhancement ratio is~12 during the non-flaming stages,which is much higher than~1.7 during the flaming *** mass spectrum of the primary wheat burning organic aerosols closely resembles that of resolved biomass burning organic aerosols(BBOA)based on measurements in ambient *** results show that large gap(0%-90%)still remains to estimate biomass burning SOA if only the oxidation of VOCs were included.