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Original title:
Thermodynamic Study of Water Activity in Atmospheric Aerosol Particles.
Authors: Asadzadeh, Behnaz ; Bendová, Magdalena ; Ždímal, Vladimír
Document type: Papers
Conference/Event: Výroční konference České aerosolové společnosti /20./, Velké Bílovice (CZ), 20191030
Year: 2019
Language: eng
Abstract: Atmospheric aerosols are complex mixtures of various inorganic−organic compounds and play significant roles in atmospheric chemistry, earth’s climate, and global radiation budget as well as in human health. Hygroscopicity is the ability of the particle to uptake water from surrounding environment. Hygroscopicity can directly control the size distribution, chemical reactivity, and phase state of aerosol particles and thus contribute to radiative forcing on the climate system, including both the direct forcing by absorbing or scattering light and indirect forcing through activation of cloud condensation nuclei (CCN). Interactions between inorganic−organic may have a crucial impact on the hygroscopic behaviour of aerosol droplets and lead to discrepancies from ideal thermodynamic behavior. The non-ideality of mixtures in aerosol particles influences the gas-particle partitioning and affects the physical state of the condensed phase, potentially leading to liquid-liquid phase separation. Thermodynamic models are key tools to gain insight into the non-ideal behavior of organic-inorganic mixtures. By means of activity coefficients, non-ideal behaviour can be taken into account. In this study we developed a thermodynamic segment-based local composition model named NRTL (Non Random Two Liquid) to describe the aktivity coefficients of organic and inorganic aerosol particles.\n
Keywords: atmospheric aerosols; hygroscopicity; thermodynamics
Project no.: LM2015037 (CEP), EF16_013/0001315
Funding provider: GA MŠk, GA MŠk
Host item entry: Sborník XX. výroční konference České aerosolové společnosti, pp., ISBN 978-80-270-6416-8
Note: Související webová stránka: http://hdl.handle.net/11104/0301079
Rights: This work is protected under the Copyright Act No. 121/2000 Coll.
Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Original record: http://hdl.handle.net/11104/0301079
Permalink: http://www.nusl.cz/ntk/nusl-407890
The record appears in these collections:
Research > Institutes ASCR > Institute of Chemical Process Fundamentals
Conference materials > Papers
Authors: Asadzadeh, Behnaz ; Bendová, Magdalena ; Ždímal, Vladimír
Document type: Papers
Conference/Event: Výroční konference České aerosolové společnosti /20./, Velké Bílovice (CZ), 20191030
Year: 2019
Language: eng
Abstract: Atmospheric aerosols are complex mixtures of various inorganic−organic compounds and play significant roles in atmospheric chemistry, earth’s climate, and global radiation budget as well as in human health. Hygroscopicity is the ability of the particle to uptake water from surrounding environment. Hygroscopicity can directly control the size distribution, chemical reactivity, and phase state of aerosol particles and thus contribute to radiative forcing on the climate system, including both the direct forcing by absorbing or scattering light and indirect forcing through activation of cloud condensation nuclei (CCN). Interactions between inorganic−organic may have a crucial impact on the hygroscopic behaviour of aerosol droplets and lead to discrepancies from ideal thermodynamic behavior. The non-ideality of mixtures in aerosol particles influences the gas-particle partitioning and affects the physical state of the condensed phase, potentially leading to liquid-liquid phase separation. Thermodynamic models are key tools to gain insight into the non-ideal behavior of organic-inorganic mixtures. By means of activity coefficients, non-ideal behaviour can be taken into account. In this study we developed a thermodynamic segment-based local composition model named NRTL (Non Random Two Liquid) to describe the aktivity coefficients of organic and inorganic aerosol particles.\n
Keywords: atmospheric aerosols; hygroscopicity; thermodynamics
Project no.: LM2015037 (CEP), EF16_013/0001315
Funding provider: GA MŠk, GA MŠk
Host item entry: Sborník XX. výroční konference České aerosolové společnosti, pp., ISBN 978-80-270-6416-8
Note: Související webová stránka: http://hdl.handle.net/11104/0301079
Rights: This work is protected under the Copyright Act No. 121/2000 Coll.
Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Original record: http://hdl.handle.net/11104/0301079
Permalink: http://www.nusl.cz/ntk/nusl-407890
The record appears in these collections:
Research > Institutes ASCR > Institute of Chemical Process Fundamentals
Conference materials > Papers
Record created 2019-11-25, last modified 2023-12-11
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