Source apportionment of PM_(2.5)using PMF combined online bulk and single-particle measurements:Contribution of fireworks and biomass burning  

作　　者：Yanjing Zhang Wenshuai Li Lei Li Mei Li Zhen Zhou Jianzhen Yu Yang Zhou 

机构地区：[1]Frontier Science Center for Deep Ocean Multispheres and Earth System(FDOMES)and Physical Oceanography Laboratory,Ocean University of China,Qingdao,Shandong 266100,China [2]College of Oceanic and Atmospheric Sciences,Ocean University of China,Qingdao,Shandong 266100,China [3]Institute of Atmospheric Environment Safety and Pollution Control,Jinan University,Guangdong 510632,China [4]Institute of Environment,Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong,China [5]Department of Chemistry,Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong,China [6]Division of Environment,The Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong,China

出　　处：《Journal of Environmental Sciences》2024年第2期325-336,共12页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.41875155);Natural Key Research and Development Program of China (No.2019YFA0607004);Environment and Conservation Fund/Woo Wheelock Green Fund (No.ECWW09EG04);Strategic Priority Research Program (B)of the Chinese Academy of Sciences (No.XDB05040502)。

摘　　要：Fireworks(FW)could significantly worsen air quality in short term during celebrations.Due to similar tracers with biomass burning(BB),the fast and precise qualification of FW and BB is still challenging.In this study,online bulk and single-particle measurements were combined to investigate the contributions of FW and BB to the overall mass concentrations of PM_(2.5)and specific chemical species by positive matrix factorization(PMF)during the Chinese New Year in Hong Kong in February 2013.With combined information,fresh/aged FW(abundant ^(140)K_(2)NO_(3)^(+)and ^(213)K_(3)SO_(4)^(+)formed from ^(113)K_(2)Cl^(+)discharged by fresh FW)can be extracted from the fresh/aged BB sources,in addition to the Second Aerosol,Vehicles+Road Dust,and Sea Salt factors.The contributions of FW and BB were investigated during three high particle matter episodes influenced by the pollution transported from the Pearl River Delta region.The fresh BB/FW contributed 39.2%and 19.6%to PM_(2.5)during the Lunar Chinese New Year case.However,the contributions of aged FW/BB enhanced in the last two episodes due to the aging process,evidenced by high contributions from secondary aerosols.Generally,the fresh BB/FW showed more significant contributions to nitrate(35.1%and15.0%,respectively)compared with sulfate(25.1%and 5.9%,respectively)and OC(14.8%and11.1%,respectively)on average.In comparison,the aged FW contributed more to sulfate(13.4%).Overall,combining online bulk and single-particle measurement data can combine both instruments’advantages and provide a new perspective for applying source apportionment of aerosols using PMF.

关 键 词：Source apportionment PMF Online bulk measurements Single particle analysis FIREWORKS Biomass burning 

分 类 号：X513[环境科学与工程—环境工程] X831