典型文献
Effect of NOx and RH on the secondary organic aerosol formation from toluene photooxidation
文献摘要：
The secondary organic aerosol(SOA)formation mechanism and physicochemical properties can highly be influenced by relative humidity(RH)and NOx concentration.In this study,we performed a laboratory investigation of the SOA formation from toluene/OH photooxida-tion system in the presence or absence of NOx in dry and wet conditions.The chemical composition of toluene-derived SOA was measured using Aerodyne high-resolution time-of-flight aerosol mass spectrometer(HR-ToF-AMS).It was found that the mass concentra-tion of toluene decreased with increasing RH and NOx concentration.However,the change of SOA chemistry composition(f44,O/C)with increased RH was not consistent in the con-dition with or without NOx.The light absorption and mass absorption coefficient(MAC)of the toluene-derived SOA only increased with RH in the presence of NOx.In contrast,MAC is invariant with RH in the absence of NOx.HR-ToF-AMS results showed that,in the pres-ence of NOx,the increased nitro-aromatic compounds and N/C ratio concurrently caused the increase of SOA light absorption and O/C in wet conditions,respectively.The relative intensity of CHON and CHOxN family to the total nitrogen-containing organic compounds(NOCs)increased with the increasing RH,and be the major components of NOCs in wet con-dition.This work revealed a synergy effect of NOx and RH on SOA formation from toluene photooxidation.
文献关键词：
中图分类号：
作者姓名：
Shijie Liu;Xiaodi Liu;Yiqian Wang;Si Zhang;Can Wu;Wei Du;Gehui Wang
作者机构：
Key Lab of Geographic Information Science of the Ministry of Education,School of Geographic Sciences,East China Normal University,Shanghai 210062,China;Institute of Eco-Chongming,3663 North Zhongshan Road,Shanghai 200062,China
文献出处：
引用格式：
[1]Shijie Liu;Xiaodi Liu;Yiqian Wang;Si Zhang;Can Wu;Wei Du;Gehui Wang-.Effect of NOx and RH on the secondary organic aerosol formation from toluene photooxidation)[J].环境科学学报（英文版）,2022(04):1-9
A类：
photooxidation,photooxida,Aerodyne,f44,CHON,CHOxN,NOCs
B类：
Effect,NOx,RH,secondary,organic,aerosol,formation,from,toluene,SOA,mechanism,physicochemical,properties,can,highly,be,influenced,by,relative,humidity,concentration,In,this,study,performed,laboratory,investigation,system,presence,absence,dry,wet,conditions,composition,derived,was,measured,using,resolution,flight,mass,spectrometer,ToF,AMS,It,found,that,decreased,increasing,However,change,chemistry,increased,not,consistent,without,absorption,coefficient,MAC,only,contrast,invariant,results,showed,aromatic,compounds,concurrently,caused,respectively,intensity,family,total,nitrogen,containing,major,components,This,work,revealed,synergy,effect
AB值：
0.371477
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