Atmospheric Aerosols: Some Highlights and Highlighters, Past to Recent Years

Aerosol Science and Engineering · 2022 · PMC8943797

Europe PMC

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a decreasing trendno p-value reported

Still, there was also a downward trend in the mass concentration of PM 2.5 chemical components, such as EO, OM, SO 4 , NO 3 , and NH 4 which was consistent during the change in concentration of PM 2.5 mass throughout the similar period from 2013 to 2015, a decreasing trend was observed in coarse and fine PM concentration and decreasing rate of coarse PM was substantially larger than fine PM (Wang et al. 2019 ).

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