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DOI	10.5194/acp-22-8805-2022
	Viscosity and physical state of sucrose mixed with ammonium sulfate droplets
	Jeong, Rani; Lilek, Joseph; Zuend, Andreas; Xu, Rongshuang; Chan, Man Nin; Kim, Dohyun; Moon, Hi Gyu; Song, Mijung
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	8805
结束页码	8817
卷号	22 期号:13 页码:13
英文摘要	Although knowledge of the physical state of aerosol particles is essential to understand atmospheric chemistry model and measurements, information on the viscosity and physical state of aerosol particles consisting of organic and inorganic salts is still rare. Herein, we quantified viscosities at 293 +/- 1 K upon dehydration for the binary systems, sucrose-H2O and ammonium sulfate (AS)-H2O, and the ternary systems, sucrose-AS-H2O for organic-to-inorganic dry mass ratios (OIRs) = 4: 1, 1: 1, and 1: 4 using bead-mobility and poke-and-flow techniques. Based on the viscosity value of the aerosol particles, we defined the physical states of the total aerosol particles studied in this work. For binary systems, the viscosity of sucrose-H2O particles gradually increased from similar to 4 x 10(-1) to > similar to 1 x 10(8) Pa s when the relative humidity (RH) decreased from similar to 81 % to similar to 24 %, ranging from liquid to semisolid or solid state, which agrees with previous studies. The viscosity of AS-H2O particles remained in the liquid state (< 10(2)Pas) for RH > similar to 50 %, while for RH <=similar to 50 %, the particles showed a viscosity of > similar to 1 x 10(12) Pas, corresponding to a solid state. In case of the ternary systems, the viscosity of organic-rich particles (OIR = 4 : 1) gradually increased from similar to 1 x 10(-1) to similar to 1 x 10(8) Pa s for a RH decrease from similar to 81 % to similar to 18 %, similar to the binary sucrose-H2O particles. This indicates that the sucrose-AS-H2O particles range from liquid to semisolid or solid across the RH. In the ternary particles for OIR = 1 : 1, the viscosities ranged from less than similar to 1 x 10(2) for RH > 34 % to > similar to 1 x 10(8) Pas at similar to 27 % RH. The viscosities correspond to liquid for RH > similar to 34 %, semisolid for similar to 34 % < RH < similar to 27 %, and semisolid or solid for RH < similar to 27 %. Compared to the organic-rich particles, in the inorganic-rich particles (OIR =1 : 4), drastic enhancement in viscosity was observed as RH decreased; the viscosity increased by approximately 8 orders of magnitude during a decrease in RH from 43 % to 25 %, resulting in liquid to semisolid or solid in the RH range. Overall, all particles studied in this work were observed to exist as a liquid, semisolid, or solid depending on the RH. Furthermore, we compared the measured viscosities of ternary systems with OIRs of 4 : 1, 1 : 1, and 1 : 4 to the predicted viscosities using the Aerosol Inorganic-Organic Mixtures Functional groups Activity Coefficients Viscosity model (AIOMFAC-VISC) predictions with the Zdanovskii-Stokes-Robinson (ZSR) organic-inorganic mixing model, with excellent model-measurement agreement for all OIRs.
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:000821822400001
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/273778
作者单位	Jeonbuk National University; McGill University; Chinese University of Hong Kong; Chinese University of Hong Kong; Jeonbuk National University
推荐引用方式 GB/T 7714	Jeong, Rani,Lilek, Joseph,Zuend, Andreas,et al. Viscosity and physical state of sucrose mixed with ammonium sulfate droplets[J],2022,22(13):13.
APA	Jeong, Rani.,Lilek, Joseph.,Zuend, Andreas.,Xu, Rongshuang.,Chan, Man Nin.,...&Song, Mijung.(2022).Viscosity and physical state of sucrose mixed with ammonium sulfate droplets.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(13),13.
MLA	Jeong, Rani,et al."Viscosity and physical state of sucrose mixed with ammonium sulfate droplets".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.13(2022):13.