Abstract
Many cities in China are facing the dual challenge of PM2.5 and PM10 pollution. There is an urgent need to develop a cost-effective method that can apportion both with high-time resolution. A novel and practical apportionment method is presented in this study. It combines the measurement of particle mass size distribution (PMSD) with an optical particle counter (OPC) and the algorithm of normalized non-negative matrix factorization (N-NMF). Applied in the city center of Baoding, Hebei, this method separates four distinct pollution factors. Their sizes (ordered from the smallest to largest) range from 0.16 μm to 0.6 μm, 0.16 μm to 1.0 μm, 0.5 μm to 17.0 μm, and 2.0 μm to 20.0 μm, respectively. They correspondingly contribute to PM2.5 (PM10) with portions of 26% (17%), 37% (26%), 33% (41%), and 4% (16%), respectively, on average. The smaller three factors are identified as combustion, secondary, and industrial aerosols because of their high correlation with carbonaceous aerosols, nitrate aerosols, and trace elements of Fe/Mn/Ca in PM2.5, respectively. The largest-sized factor is linked to dust aerosols. The primary origin regions, oxidation degrees, and formation mechanisms of each source are further discussed. This provides a scientific basis for the comprehensive management of PM2.5 and PM10 pollution.
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MDPI and ACS Style
Wang, P.; Wang, Q.; Jia, Y.; Ma, J.; Wang, C.; Qiao, L.; Fu, Q.; Mellouki, A.; Chen, H.; Li, L.
A Novel Apportionment Method Utilizing Particle Mass Size Distribution across Multiple Particle Size Ranges. Atmosphere 2024, 15, 955.
https://doi.org/10.3390/atmos15080955
AMA Style
Wang P, Wang Q, Jia Y, Ma J, Wang C, Qiao L, Fu Q, Mellouki A, Chen H, Li L.
A Novel Apportionment Method Utilizing Particle Mass Size Distribution across Multiple Particle Size Ranges. Atmosphere. 2024; 15(8):955.
https://doi.org/10.3390/atmos15080955
Chicago/Turabian Style
Wang, Peizhi, Qingsong Wang, Yuhuan Jia, Jingjin Ma, Chunying Wang, Liping Qiao, Qingyan Fu, Abdelwahid Mellouki, Hui Chen, and Li Li.
2024. "A Novel Apportionment Method Utilizing Particle Mass Size Distribution across Multiple Particle Size Ranges" Atmosphere 15, no. 8: 955.
https://doi.org/10.3390/atmos15080955
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