气候变化领域集成服务门户(CCPortal): Reconsideration of surface tension and phase state effects on cloud condensation nuclei activity based on the atomic force microscopy measurement

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DOI	10.5194/acp-22-16123-2022
	Reconsideration of surface tension and phase state effects on cloud condensation nuclei activity based on the atomic force microscopy measurement
	Xiong, Chun; Chen, Xueyan; Ding, Xiaolei; Kuang, Binyu; Pei, Xiangyu; Xu, Zhengning; Yang, Shikuan; Hu, Huan; Wang, Zhibin
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	16123
结束页码	16135
卷号	22 期号:24 页码:13
英文摘要	Dicarboxylic acids are ubiquitous in atmospheric aerosol particles, but their roles as surfactants in cloud condensation nuclei (CCN) activity remain unclear. In this study, we investigated CCN activity of inorganic salt (sodium chloride and ammonium sulfate) and dicarboxylic acid (including malonic acid (MA), phenylmalonic acid (PhMA), succinic acid (SA), phenylsuccinic acid (PhSA), adipic acid (AA), pimelic acid (PA), and octanedioic acid (OA)), mixed particles with varied organic volume fractions (OVFs), and then directly determined their surface tension and phase state at high relative humidity (over 99.5 %) via atomic force microscopy (AFM). Our results show that CCN-derived kappa(CCN) of studied dicarboxylic acids ranged from 0.003 to 0.240. A linearly positive correlation between kappa(CCN) and solubility was obtained for slightly dissolved species, while negative correlation was found between kappa(CCN) and molecular volume for highly soluble species. For most inorganic salts and dicarboxylic acids (MA, PhMA, SA, PhSA and PA), a good closure within 30 % relative bias between kappa(CCN) and chemistry-derived kappa(Chem) was obtained. However, kappa(CCN) values of inorganic salt-AA and inorganic salt-OA systems were surprisingly 0.3-3.0 times higher than kappa(Chem), which was attributed to surface tension reduction, as AFM results showed that their surface tensions were 20 %-42 % lower than that of water (72 mN m(-1)). Meanwhile, semisolid phase states were obtained for inorganic salt-AA and inorganic salt-OA and also affected hygroscopicity closure results. Our study highlights that surface tension reduction should be considered when investigating aerosol-cloud interactions.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000903276500001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273383
作者单位	Zhejiang University; Zhejiang University; Zhejiang University; Zhejiang University
推荐引用方式 GB/T 7714	Xiong, Chun,Chen, Xueyan,Ding, Xiaolei,et al. Reconsideration of surface tension and phase state effects on cloud condensation nuclei activity based on the atomic force microscopy measurement[J],2022,22(24):13.
APA	Xiong, Chun.,Chen, Xueyan.,Ding, Xiaolei.,Kuang, Binyu.,Pei, Xiangyu.,...&Wang, Zhibin.(2022).Reconsideration of surface tension and phase state effects on cloud condensation nuclei activity based on the atomic force microscopy measurement.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(24),13.
MLA	Xiong, Chun,et al."Reconsideration of surface tension and phase state effects on cloud condensation nuclei activity based on the atomic force microscopy measurement".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.24(2022):13.