Chemical characteristics and sources apportionment of volatile organic compounds in the primary urban area of Shijiazhuang,North China Plain  

作　　者：Xiao Zhang Junfeng Wang Jiangwei Zhao Junliang He Yali Lei Kai Meng RuiWei Xue Zhang Miaomiao Zhang Shuangying Ni Eleonora Aruffo 

机构地区：[1]College of geographical sciences and Environment,Shijiazhuang University,Shijiazhuang 050035,China [2]Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control,Collaborative Innovation Center of Atmospheric Environment and Equipment Technology,School of Environmental Science and Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China [3]Hebei Province Ecology Environmental Monitoring Center,Shijiazhuang 050037,China [4]Key Lab of Geographic Information Science of the Ministry of Education,School of Geographic Sciences,East China Normal University,Shanghai 200241,China [5]Hebei Provincial Institute of Meteorological Sciences,Shijiazhuang 050021,China [6]Key Laboratory of Meteorology and Ecological Environment of Hebei Province,Shijiazhuang 050021,China [7]Hebei Provincial Academy of Ecological Environmental Science,Shijiazhuang 050037,China [8]Department of Advanced Technologies in Medicine&Dentistry,University“G.d’Annunzio”of Chieti-Pescara,Chieti 66100,Italy [9]Center for Advanced Studies and Technology-CAST,Chieti 66100,Italy

出　　处：《Journal of Environmental Sciences》2025年第3期465-475,共11页环境科学学报(英文版)

基　　金：supported by the Natural Science Foundation of Hebei Province(Nos.D2019106042,D2020304038,and D2021106002);the National Natural Science Foundation of China(No.22276099);the State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex(No.2021080544);the Environmental Monitoring Research Foundation of Jiangsu Province(No.2211).

摘　　要：VOCs(Volatile organic compounds)exert a vital role in ozone and secondary organic aerosol production,necessitating investigations into their concentration,chemical characteristics,and source apportionment for the effective implementation of measures aimed at preventing and controlling atmospheric pollution.FromJuly to October 2020,onlinemonitoringwas conducted in the main urban area of Shijiazhuang to collect data on VOCs and analyze their concentrations and reactivity.Additionally,the PMF(positive matrix factorization)method was utilized to identify the VOCs sources.Results indicated that the TVOCs(total VOCs)concentration was(96.7±63.4μg/m^3),with alkanes exhibiting the highest concentration of(36.1±26.4μg/m^3),followed by OVOCs(16.4±14.4μg/m^3).The key active components were alkenes and aromatics,among which xylene,propylene,toluene,propionaldehyde,acetaldehyde,ethylene,and styrene played crucial roles as reactive species.The sources derived from PMF analysis encompassed vehicle emissions,solvent and coating sources,combustion sources,industrial emissions sources,as well as plant sources,the contribution of which were 37.80%,27.93%,16.57%,15.24%,and 2.46%,respectively.Hence,reducing vehicular exhaust emissions and encouraging neighboring industries to adopt low-volatile organic solvents and coatings should be prioritized to mitigate VOCs levels.

关 键 词：Volatile organic compounds Pollution characteristics Ozone formation potential OH radical loss rate Source apportionment 

分 类 号：X51[环境科学与工程—环境工程]