Vacuum FTIR observation on hygroscopic properties and phase transition of malonic acid aerosols

Xu Shao; Yun Zhang; Shu Feng Pang; Yun Hong Zhang

doi:10.1016/j.chemphys.2016.11.001

Vacuum FTIR observation on hygroscopic properties and phase transition of malonic acid aerosols

Xu Shao, Yun Zhang, Shu Feng Pang^*, Yun Hong Zhang

^*此作品的通讯作者

化学与化工学院

Beijing Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

16 引用（Scopus）

摘要

A novel approach based on a combination of a pulse relative humidity (RH) controlling system and a rapid scan vacuum FTIR spectrometer was utilized to investigate the hygroscopic property and phase transition of malonic acid (MA) aerosols. By using this approach, both water vapor amount around the aerosols and water content within aerosols with sub-second time resolution were obtained. Based on the features of FTIR absorbing bands, it can be known that the evolution of hydrogen-bonding structures of malonic acid aerosols took place from (H₂O)_n-MA to MA-MA accompanying with phase transition in the dehumidifying process. And in present paper, the stepwise efflorescence of MA aerosols and nucleation rates at different RHs are first reported. Our observation has shown that the efflorescence of MA started at ∼17% RH and the nucleation rates increased with decreasing RH.

源语言	英语
页（从-至）	7
页数	1
期刊	Chemical Physics
卷	483-484
DOI	https://doi.org/10.1016/j.chemphys.2016.11.001
出版状态	已出版 - 1 2月 2017

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10.1016/j.chemphys.2016.11.001

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title = "Vacuum FTIR observation on hygroscopic properties and phase transition of malonic acid aerosols",

abstract = "A novel approach based on a combination of a pulse relative humidity (RH) controlling system and a rapid scan vacuum FTIR spectrometer was utilized to investigate the hygroscopic property and phase transition of malonic acid (MA) aerosols. By using this approach, both water vapor amount around the aerosols and water content within aerosols with sub-second time resolution were obtained. Based on the features of FTIR absorbing bands, it can be known that the evolution of hydrogen-bonding structures of malonic acid aerosols took place from (H2O)n-MA to MA-MA accompanying with phase transition in the dehumidifying process. And in present paper, the stepwise efflorescence of MA aerosols and nucleation rates at different RHs are first reported. Our observation has shown that the efflorescence of MA started at ∼17% RH and the nucleation rates increased with decreasing RH.",

keywords = "Efflorescence, Hydrogen-bonds, Malonic acid, Nucleation rates",

author = "Xu Shao and Yun Zhang and Pang, {Shu Feng} and Zhang, {Yun Hong}",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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doi = "10.1016/j.chemphys.2016.11.001",

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AU - Shao, Xu

AU - Zhang, Yun

AU - Pang, Shu Feng

AU - Zhang, Yun Hong

PY - 2017/2/1

Y1 - 2017/2/1

N2 - A novel approach based on a combination of a pulse relative humidity (RH) controlling system and a rapid scan vacuum FTIR spectrometer was utilized to investigate the hygroscopic property and phase transition of malonic acid (MA) aerosols. By using this approach, both water vapor amount around the aerosols and water content within aerosols with sub-second time resolution were obtained. Based on the features of FTIR absorbing bands, it can be known that the evolution of hydrogen-bonding structures of malonic acid aerosols took place from (H2O)n-MA to MA-MA accompanying with phase transition in the dehumidifying process. And in present paper, the stepwise efflorescence of MA aerosols and nucleation rates at different RHs are first reported. Our observation has shown that the efflorescence of MA started at ∼17% RH and the nucleation rates increased with decreasing RH.

AB - A novel approach based on a combination of a pulse relative humidity (RH) controlling system and a rapid scan vacuum FTIR spectrometer was utilized to investigate the hygroscopic property and phase transition of malonic acid (MA) aerosols. By using this approach, both water vapor amount around the aerosols and water content within aerosols with sub-second time resolution were obtained. Based on the features of FTIR absorbing bands, it can be known that the evolution of hydrogen-bonding structures of malonic acid aerosols took place from (H2O)n-MA to MA-MA accompanying with phase transition in the dehumidifying process. And in present paper, the stepwise efflorescence of MA aerosols and nucleation rates at different RHs are first reported. Our observation has shown that the efflorescence of MA started at ∼17% RH and the nucleation rates increased with decreasing RH.

KW - Efflorescence

KW - Hydrogen-bonds

KW - Malonic acid

KW - Nucleation rates

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JO - Chemical Physics

JF - Chemical Physics

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Vacuum FTIR observation on hygroscopic properties and phase transition of malonic acid aerosols

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