Insight into the Formation of Winter Black Carbon and Brown Carbon over Xi'an in Northwestern China.

Toxics · 2026 · PMC12846155 · PMID 41600642

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a decreasing trendno p-value reported

Similarly to the observed BC concentration, b abs -BC exhibited a decreasing trend from 60.0 Mm −1 during 2013–2014 to 42.4 Mm −1 during 2015–2016 and 32.1 Mm −1 during 2017–2018.

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