Influence of Relative Humidity and Composition on PM2.5 Phases in Northeast Asia
Changjoon Seong,
Daeun Kim,
Rani Jeong
et al.
Abstract:In Northeast Asia, the elevated levels of fine particulate matter (PM 2.5 ) are an environmental concern, yet their physicochemical properties have been poorly characterized. Herein, we determined the phase states of PM 2.5 in 92 filter samples collected from four different cities� Beijing, Seoul, Seosan, and Ulaanbaatar�during 2020−2022, within a temperature range of ∼290−293 K. We noted a distinct trend in the boundary relative humidity (RH) of liquid and semisolid phases within these PM 2.5 samples. As the… Show more
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