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DOI	10.1016/j.atmosenv.2021.118318
	Hygroscopic growth of aerosol particles consisted of oxalic acid and its internal mixture with ammonium sulfate for the relative humidity ranging from 80% to 99.5%
	Zhang C.; Ma N.; Fan F.; Yang Y.; Größ J.; Yan J.; Bu L.; Wang Y.; Wiedensohler A.
发表日期	2021
ISSN	1352-2310
卷号	252
英文摘要	The hygroscopicity of atmospheric aerosol particles plays an important role in their effects on the environment and the public health. Oxalic acid (OA) has been recognized as the dominant dicarboxylic acid in the urban and the remote aerosol particles, so a number of studies have investigated the hygroscopicity of aerosols consisted of pure OA and its mixture with inorganic salt. However, few experimental studies have focused on the hygroscopicity of nanoscale particles at high relative humidity (RH) below saturation of water vapor (i.e., RH = 90–100%) due to the limitation of traditional measuring instruments. In this work, the hygroscopic growth factor (GF) of the aerosol particles composed of pure OA and internally mixed OA-ammonium sulfate (AS) at RH = 80–99.5% were studied using a high humidity tandem differential mobility analyzer (HHTDMA). The experimental results were used to verify the applicability of models including the ideal solution model, the extended aerosol inorganics model (E-AIM) combining with the revised universal quasi-chemical functional group activity coefficients (UNIFAC-Peng) model, the Aerosol Inorganic–Organic Mixtures Functional groups Activity Coefficients (AIOMFAC) model and the Zdanovskii–Stokes–Robinson (ZSR) model. According to the experimental results, the effect of RH, the composition and the initial dry particle diameter (D0) on the hygroscopic growth factor (GF) and the effective hygroscopicity parameter (κ) of particles at RH = 80–99.5% were analyzed in details. It has been found that for pure OA particles with D0 = 80/100 nm, the prediction of the UNIFAC-Peng model and the AIOMFAC model becomes more accurate than the ideal solution model with the increasing of RH, while all models cannot describe the GF of smaller particles at RH = 80–99.5%. For mixed OA-AS aerosol particles, the chemical reaction is an important reason for the discrepancies between the HHTDMA results and the model prediction. For the pure OA aerosol particles at RH ≤ 96% and particles containing AS at RH ≤ 99.5%, the sensitivity of GF to D0 is positively and negatively correlated with RH and D0, respectively. However, for all aerosol types in this study, the sensitivity of GF to RH is positively correlated with both D0 and RH. In addition, the κ based on the measurement is clearly dependent on D0 (at RH = 95–99.5%), RH and the particle composition (at RH = 80–99.5%). The measured hygroscopicity of aerosol particles at high RH might be useful in addressing challenges in solving the discrepancies between the κ measured under subsaturated and supersaturated conditions. © 2021 Elsevier Ltd
关键词	Aerosol particles High relative humidity Hygroscopicity Internal mixture Oxalic acid
语种	英语
scopus关键词	Atmospheric aerosols; Atmospheric humidity; Nitrogen compounds; Public health; Sulfur compounds; Aerosol particles; Ammonium Sulfate; Group activities; Growth factor; High humidity tandem differential mobility analyzers; Higher relative humidity; Hygroscopic growth factor; Hygroscopicity; Ideal solutions; Internal mixture; Mixtures; ammonium sulfate; dicarboxylic acid; oxalic acid; aerosol; ammonium; ammonium sulfate; chemical reaction; functional group; hygroscopicity; numerical model; oxalic acid; relative humidity; water vapor; aerosol; Article; chemical composition; chemical reaction; environmental temperature; humidity; particle size; priority journal; Raman spectrometry; stoichiometry; surface tension; theoretical model; water vapor; wettability
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248516
作者单位	School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China; Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China; State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; Leibniz Institute for Tropospheric Research, Leipzig, 04318, Germany; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Key Laboratory of Global Change and Marine Atmospheric Chemistry, Ministry of Natural Resources, Xiamen, 361005, China
推荐引用方式 GB/T 7714	Zhang C.,Ma N.,Fan F.,et al. Hygroscopic growth of aerosol particles consisted of oxalic acid and its internal mixture with ammonium sulfate for the relative humidity ranging from 80% to 99.5%[J],2021,252.
APA	Zhang C..,Ma N..,Fan F..,Yang Y..,Größ J..,...&Wiedensohler A..(2021).Hygroscopic growth of aerosol particles consisted of oxalic acid and its internal mixture with ammonium sulfate for the relative humidity ranging from 80% to 99.5%.ATMOSPHERIC ENVIRONMENT,252.
MLA	Zhang C.,et al."Hygroscopic growth of aerosol particles consisted of oxalic acid and its internal mixture with ammonium sulfate for the relative humidity ranging from 80% to 99.5%".ATMOSPHERIC ENVIRONMENT 252(2021).