Investigation of HO_(2) uptake mechanisms onto multiple-component ambient aerosols collected in summer and winter time in Yokohama,Japan

作     者：Jun Zhou Yukiko Fukusaki Kentaro Murano Tania Gautam Yu Bai Yoshimi Inomata Hiroaki Komatsu Mayuko Takeda Bin Yuan Min Shao Yosuke Sakamoto Yoshizumi Kajii Jun Zhou;Yukiko Fukusaki;Kentaro Murano;Tania Gautam;Yu Bai;Yoshimi Inomata;Hiroaki Komatsu;Mayuko Takeda;Bin Yuan;Min Shao;Yosuke Sakamoto;Yoshizumi Kajii

作者机构：Institute for Environmental and Climate ResearchJinan UniversityGuangzhou 511443China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation forEnvironmental QualityGuangzhou 511443China Graduate School of Global Environmental StudiesKyoto UniversityKyoto606-8501Japan Yokohama Environmental Science Research InstituteYokohama Kanagawa 221–0024Japan Department of ChemistryUniversity of AlbertaAlbertaEdmonton T6G 2G2Canada Graduate School of Human and Environmental StudiesKyoto UniversityKyoto 606-8501Japan Kanagawa Environmental Research CenterKanagawa 254-0014Japan Center for Regional Environmental ResearchNational Institute for Environmental StudiesIbaraki305-8506Japan 

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

年 卷 期：2024年第137卷第3期

页      面：18-29页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 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 the Key-Area Research and Development Program of Guangdong Province (No.2020B1111360003) the Japan Society for the Promotion of Science (JSPS,No.16H06305) the Natural Science Foundation of Guangdong Province (No.2020A1515110526) 

主　　题：HO_(2)uptake kinetics Offine method Impacting factors Mechanism 

摘      要：The heterogeneous loss of HO_(2)radicals onto ambient aerosols plays an important role in tropospheric ***,sparse investigation of the dominating parameters controlling the HO_(2)uptake coefficients onto ambient aerosols(γHO_(2))has largely hindered the application of the measuredγHO_(2)to the global spatial *** we induced an offine method using LFP-LIF technique to measure the kinetics of HO_(2)uptake onto ambient aerosols collected in summertime and wintertime in Yokohama city,a regional urban site near Tokyo,*** controlling the dominating parameters which infuenceγHO_(2),we were able to investigate the detailed HO_(2)uptake *** characterized the chemical composition of the collected ambient aerosols,including organics,inorganics,transition metals ions,*** modeledγHO_(2)using different *** show thatγHO_(2)increased with the increase in RH,and the aerosol states(“dryor wet/aqueous)have large effects onγHO_(2).With fixed RH and aerosol chemical composition,γHO_(2)was highly dependent on pH and inversely correlated with[HO_(2)]_*** combing the measuredγHO_(2)values with the modeled ones,we found that both the HO_(2)self-reaction and transition metal-catalyzed reactions should be accounted for to yield a single parameterization to predictγHO_(2),and different chemical compositions may have collective effects onγHO_(2).Results may serve for extending theγHO_(2)values measured at one observation site to different environmental conditions,which will help us to achieve more accurate modeling results concerning secondary pollutant formation(i.e.,ozone).