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DOI	10.5194/acp-20-13611-2020
	On mineral dust aerosol hygroscopicity
	Chen L.; Peng C.; Gu W.; Fu H.; Jian X.; Zhang H.; Zhang G.; Zhu J.; Wang X.; Tang M.
发表日期	2020
ISSN	1680-7316
起始页码	13611
结束页码	13626
卷号	20 期号:21
英文摘要	Despite its importance, hygroscopicity of mineral dust aerosol remains highly uncertain. In this work, we investigated water adsorption and hygroscopicity of different mineral dust samples at 25 °C, via measurement of sample mass at different relative humidity (RH, up to 90 %) using a vapor sorption analyzer. Mineral dust samples examined (21 in total) included seven authentic mineral dust samples from different regions in the world and 14 major minerals contained in mineral dust aerosol. At 90%RH, the mass ratios of adsorbed water to the dry mineral ranged from 0.0011 to 0.3080, largely depending on the BET surface areas of mineral dust samples. The fractional surface coverages of adsorbed water were determined to vary between 1.26 and 8.63 at 90%RH, and it was found that the Frenkel-Halsey-Hill (FHH) adsorption isotherm could describe surface coverages of adsorbed water as a function of RH well, with AFHH and BFHH parameters in the range of 0.15-4.39 and 1.10-1.91, respectively. The comprehensive and robust data obtained would largely improve our knowledge of hygroscopicity of mineral dust aerosol. © Author(s) 2020.
语种	英语
scopus关键词	aerosol composition; aerosol formation; dust; hygroscopicity; mineral dust; relative humidity
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/247374
作者单位	State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Material Research and Development, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; University of Chinese Academy of Sciences, Beijing, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
推荐引用方式 GB/T 7714	Chen L.,Peng C.,Gu W.,et al. On mineral dust aerosol hygroscopicity[J],2020,20(21).
APA	Chen L..,Peng C..,Gu W..,Fu H..,Jian X..,...&Tang M..(2020).On mineral dust aerosol hygroscopicity.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(21).
MLA	Chen L.,et al."On mineral dust aerosol hygroscopicity".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.21(2020).