Air pollution in heavy industrial cities along the northern slope of the Tianshan Mountains, Xinjiang: characteristics, meteorological influence, and sources.

Environ Sci Pollut Res Int · 2023 · PMC9994416 · PMID 36884176

Europe PMC DOI

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an increasing trendno p-value reported

( 2021 ) had done air pollutants characterization research throughout Xinjiang, and the results showed a slight decreasing trend in the concentrations of SO 2 , CO, and PM 2.5 from 2015 to 2018, while the concentrations of NO 2 , O 3 , and PM 10 showed an increasing trend.

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a decreasing trendno p-value reported

The concentrations of air pollutants (except O 3 ) showed a decreasing trend.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.