Trends in the sizes and carbonaceous fractions of primary emitted particulate matter in China from 1960 to 2019  

作　　者：Yuanzheng Zhang Jin Li Shuxiu Zheng Rong Dai Jinghang Wang Yaqi Zhu Wenxiao Zhang Haoran Xu Guofeng Shen Huizhong Shen Jianmin Ma Xuejun Wang Shu Tao 

机构地区：[1]Institute of Carbon Neutrality,Laboratory for Earth Surface Processes,College of Urban and Environmental Sciences,Peking University,Beijing 100871,China [2]School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China

出　　处：《National Science Review》2025年第3期165-175,共11页国家科学评论(英文版)

基　　金：supported by the National Natural Science Foundation of China(42330709,41991312 and 41821005);the High-Performance Computing Platform of Peking University,and Center for Computational Science and Engineering at the Southern University of Science and Technology.

摘　　要：The health impacts of particulate matter(PM)depend on its concentration,size and composition.Herein,we quantified the changes in the emissions of primary PM_(2.5),PM_(2.5-10) and PM_(>10) with aerodynamic diameters of<2.5μm,2.5-10μm and>10μm,respectively,black carbon(BC),and organic carbon(OC)to address the changes and driving factors.The temporal trends of PM emissions follow Kuznets curves,with 1995 as the peak year when the gross domestic product per capita was only US$1023,showing a late-mover advantage.The fractions of PM_(2.5):PM_(2.5)-10:PM_(>10) and BC:OC:non-carbonaceous-PM_(2.5) from various sectors varied following different trajectories.The mass fractions of PM_(2.5):PM_(2.5)-10:PM_(>10) from iron-steel production industries changed from 21%:12%:67%in 1960 to 50%:13%:37%in 2019,showing a decrease in PM size.The fractions of BC were linearly correlated with PM_(2.5),whereas the dependence of OC on PM_(2.5) differed before and after 1995,owing to changes in residential emissions.Various factors influencing the changes in size and carbonaceous fraction were explored.The major factors were the promotion of dust-removal capacity and the transition in residential energy from solid fuels to emission-free fuels,which increased the fractions of fine PM and carbonaceous fraction.

关 键 词：primary particulate matter size carbonaceous PM temporal trend 

分 类 号：X513[环境科学与工程—环境工程]