Determination of water activity in ammonium sulfate and sulfuric acid mixtures using levitated single particles

Yong Pyo Kim; Betty K.L. Pun; Chak K. Chan; Richard C. Flagan; John H. Seinfeld

doi:10.1080/02786829408959683

Determination of water activity in ammonium sulfate and sulfuric acid mixtures using levitated single particles

Yong Pyo Kim, Betty K.L. Pun, Chak K. Chan, Richard C. Flagan, John H. Seinfeld

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

Water activities of ammonium sulfate-sulfuric acid mixtures with ammonium to sulfate molar ratios between 0 and 2 were measured by a spherical void electrodynamic levitator at relative humidities (RH) of 0.18–0.90. Since the composition of the solid particles is subject to uncertainty, solution properties were determined relative to the known properties at RH about 0.75–0.90. The data were compared with other measurements and the estimates from the Zdanovskii-Stokes-Robinson (ZSR) method and SCAPE, a newly developed gas-particle equilibrium model, and generally were found to be in good agreement. © 1994 Elsevier Science Inc.

Original language	English (US)
Pages (from-to)	275-284
Number of pages	10
Journal	Aerosol Science and Technology
Volume	20
Issue number	3
DOIs	https://doi.org/10.1080/02786829408959683
State	Published - Jan 1 1994
Externally published	Yes

ASJC Scopus subject areas

Environmental Chemistry
General Materials Science
Pollution

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title = "Determination of water activity in ammonium sulfate and sulfuric acid mixtures using levitated single particles",

abstract = "Water activities of ammonium sulfate-sulfuric acid mixtures with ammonium to sulfate molar ratios between 0 and 2 were measured by a spherical void electrodynamic levitator at relative humidities (RH) of 0.18–0.90. Since the composition of the solid particles is subject to uncertainty, solution properties were determined relative to the known properties at RH about 0.75–0.90. The data were compared with other measurements and the estimates from the Zdanovskii-Stokes-Robinson (ZSR) method and SCAPE, a newly developed gas-particle equilibrium model, and generally were found to be in good agreement. {\textcopyright} 1994 Elsevier Science Inc.",

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T1 - Determination of water activity in ammonium sulfate and sulfuric acid mixtures using levitated single particles

AU - Kim, Yong Pyo

AU - Pun, Betty K.L.

AU - Chan, Chak K.

AU - Flagan, Richard C.

AU - Seinfeld, John H.

N1 - Generated from Scopus record by KAUST IRTS on 2023-07-06

PY - 1994/1/1

Y1 - 1994/1/1

N2 - Water activities of ammonium sulfate-sulfuric acid mixtures with ammonium to sulfate molar ratios between 0 and 2 were measured by a spherical void electrodynamic levitator at relative humidities (RH) of 0.18–0.90. Since the composition of the solid particles is subject to uncertainty, solution properties were determined relative to the known properties at RH about 0.75–0.90. The data were compared with other measurements and the estimates from the Zdanovskii-Stokes-Robinson (ZSR) method and SCAPE, a newly developed gas-particle equilibrium model, and generally were found to be in good agreement. © 1994 Elsevier Science Inc.

AB - Water activities of ammonium sulfate-sulfuric acid mixtures with ammonium to sulfate molar ratios between 0 and 2 were measured by a spherical void electrodynamic levitator at relative humidities (RH) of 0.18–0.90. Since the composition of the solid particles is subject to uncertainty, solution properties were determined relative to the known properties at RH about 0.75–0.90. The data were compared with other measurements and the estimates from the Zdanovskii-Stokes-Robinson (ZSR) method and SCAPE, a newly developed gas-particle equilibrium model, and generally were found to be in good agreement. © 1994 Elsevier Science Inc.

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DO - 10.1080/02786829408959683

M3 - Article

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JO - Aerosol Science and Technology

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ER -

Determination of water activity in ammonium sulfate and sulfuric acid mixtures using levitated single particles

Abstract

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