Articles | Volume 22, issue 3
Research article
14 Feb 2022
Research article |  | 14 Feb 2022

Bimodal distribution of size-resolved particle effective density: results from a short campaign in a rural environment over the North China Plain

Yaqing Zhou, Nan Ma, Qiaoqiao Wang, Zhibin Wang, Chunrong Chen, Jiangchuan Tao, Juan Hong, Long Peng, Yao He, Linhong Xie, Shaowen Zhu, Yuxuan Zhang, Guo Li, Wanyun Xu, Peng Cheng, Uwe Kuhn, Guangsheng Zhou​​​​​​​, Pingqing Fu, Qiang Zhang, Hang Su, and Yafang Cheng


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Short summary
This study characterizes size-resolved particle effective densities and their evolution associated with emissions and aging processes in a rural area of the North China Plain. Particle effective density exhibits a high-frequency bimodal distribution, and two density modes exhibit opposite trends with increasing particle size. SIA and BC mass fractions are key factors of particle effective density, and a value of 0.6 g cm−3 is appropriate to represent BC effective density in bulk particles.
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