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

IF 16.3 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

National Science Review Pub Date : 2025-01-16 eCollection Date: 2025-03-01 DOI:10.1093/nsr/nwaf003

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

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引用次数: 0

Abstract

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 <2.5 μm, 2.5-10 μm and >10 μm, 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.

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来源期刊

National Science Review MULTIDISCIPLINARY SCIENCES-

CiteScore

24.10

自引率

1.90%

发文量

249

审稿时长

13 weeks

期刊介绍： National Science Review (NSR; ISSN abbreviation: Natl. Sci. Rev.) is an English-language peer-reviewed multidisciplinary open-access scientific journal published by Oxford University Press under the auspices of the Chinese Academy of Sciences.According to Journal Citation Reports, its 2021 impact factor was 23.178. National Science Review publishes both review articles and perspectives as well as original research in the form of brief communications and research articles.