Characteristics,evolution,and regional differences of biomass burning particles in the Sichuan Basin,China

作     者：Jinqi Luo Junke Zhang Xiaojuan Huang Qin Liu Bin Luo Wei Zhang Zhihan Rao Yangchun Yu Jinqi Luo;Junke Zhang;Xiaojuan Huang;Qin Liu;Bin Luo;Wei Zhang;Zhihan Rao;Yangchun Yu

作者机构：Faculty of Geosciences and Environmental EngineeringSouthwest Jiaotong UniversityChengdu 611756China Plateau Atmosphere and Environment Key Laboratory of Sichuan ProvinceSchool of Atmospheric SciencesChengdu University of Information TechnologyChengdu 610225China Sichuan Environmental Monitoring CenterChengdu 610074China Shandong Academy for Environmental PlanningJinan 250101China 

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

年 卷 期：2020年第32卷第3期

页      面：35-46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 the National Natural Science Foundation of China (No.41805095) the Sichuan Science and Technology Program (Nos.2018SZ0288 and2019YFS0476) the Fundamental Research Funds for the Central Universities (2682017CX080) 

主　　题：Single particles Biomass burning particles Evolution Regional differences Sichuan basin 

摘      要：The Sichuan Basin has experienced serious air pollution from fine particulate matter(PM2.5) in the past few years with biomass burning has been identified as a major source of PM2.5 in this *** used single particle aerosol mass spectrometer to investigate the characteristics of biomass burning particles in three interacting cities representing different types of urban environment in the Sichuan Basin.A total of 739,794,279,610,and380,636 biomass burning particles were detected at Ya’an,Guang’an,and Chengdu,which represented 42%,69%,and 61%,respectively,of the total number of *** analyzed the chemical composition,transportation,and evolution of biomass burning *** contribution of K-elemental carbon and K-secondary inorganic particles was highest in Ya’an(36%) and Guang’an(47%),respectively,reflecting the important role of fresh biomass burning particles and long-distance transport in these two *** masses originating from different directions corresponded to different levels of PM2.5 and the contributions of polluted clusters increased significantly on polluted *** and secondary inorganic biomass burning particles increased pollution at Ya’an and Guang’an,respectively,but dominated different stages of pollution in Chengdu.K-nitrate particles were formed by photochemical reactions,whereas K-sulfate particles were formed by both photochemical and liquid-phase *** of the degree of particle aging showed that there were more fresh particles at Ya’an and more aged particles at Guang’*** results are useful in helping our understanding of the characteristics of biomass burning particles and evaluating their role in PM2.5 pollution in the Sichuan Basin.