Temporal-spatial distributions of road silt loadings and fugitive road dust emissions in Beijing from 2019 to 2020

作     者：Haibin Wang Lihui Han Tingting Li Song Qu Yuncheng Zhao Shoubin Fan Tong Chen Haoran Cui Junfang Liu Haibin Wang;Lihui Han;Tingting Li;Song Qu;Yuncheng Zhao;Shoubin Fan;Tong Chen;Haoran Cui;Junfang Liu

作者机构：Key Laboratory of Beijing on Regional Air Pollution ControlFaculty of Environment and LifeBeijing University of TechnologyBeijing 100124China Beijing Municipal Research Institute of Eco-Environmental ProtectionBeijing 100037China National Engineering Research Center of Urban Environmental Pollution ControlBeijing 100037China 

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

年 卷 期：2023年第132卷第10期

页      面：56-70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] 0818[工学-地质资源与地质工程] 0903[农学-农业资源与环境] 0804[工学-仪器科学与技术] 0706[理学-大气科学] 0835[工学-软件工程] 0833[工学-城乡规划学] 0823[工学-交通运输工程] 

基　　金：This research was funded by the Development and Demonstration of Road Dust Monitoring and Management System(No.Z191100009119011) the National Research Program for Key Issues in Air Pollution Control China(No.DQGG0201) the National Key Research and Development program of China(No.2018YFC0213203). 

主　　题：Road silt loading Temporal-spatial distribution Emission factor Emission inventory 

摘      要：Road silt loading(sL)is an important parameter in the fugitive road dust(FRD)emissions.In this study,the improved Testing Re-entrained Aerosol Kinetic Emissions from Roads(TRAKER)combined with the AP-42 method was firstly developed to quickly measure and estimate the sLs of paved roads in Beijing,China.The annual average sLs in Beijing was 0.59±0.31 g/m^(2)in 2020,and decreased by 22.4%compared with that in 2019.The seasonal variations of sLs followed the order of springwintersummerautumn in the two years.The seasonal mean road sLs on the same type road in the four seasons presented a decline trend from^(2)019 to 2020,especially on the Expressway,decreasing 47.4%-72.7%.The road sLs on the different type roads in the same season followed the order of Major arterial∼Minor arterial∼Branch roadExpress road,and Township road∼Country highwayProvincial highway∼National highway.The emission intensities of PM10 and PM_(2.5)from FRD in Beijing in 2020 were lower than those in 2019.The PM10 and PM_(2.5)emission intensities at the four planning areas in the two years all presented the order of the capital functional core areathe urban functional expansion areathe urban development new areathe ecological conservation and development area.The annual emissions of PM10 and PM_(2.5)from FRD in Beijing in 2020 were 74,886 ton and 18,118 ton,respectively,decreasing by∼33.3%compared with those in 2019.