Chemical and Physical Analysis of PM1: Insights Into Urban Atmospheric Pollution in Changchun City, Northeast China. - Li, Na; Li, Jia; Wang, Xueyi; Feng, Hua; Zhou, Chi; Yang, Mingzhi; Han, Weizheng; Hou, Keyi; Xu, Yanxue; Buttafuoco, Gabriele (Advances in Meteorology, 2026)