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

Department of Chemical Engineering & Materials Science

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.

Original language	English
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 - 1994

Bibliographical note

Funding Information:
This work was supported by National Science Foundation grant ATM 9307603.

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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.",

author = "Kim, {Yong Pyo} and Pun, {Betty K.L.} and Chan, {Chak K.} and Flagan, {Richard C.} and Seinfeld, {John H.}",

note = "Funding Information: This work was supported by National Science Foundation grant ATM 9307603.",

year = "1994",

doi = "10.1080/02786829408959683",

language = "English",

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journal = "Aerosol Science and Technology",

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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 - Funding Information: This work was supported by National Science Foundation grant ATM 9307603.

PY - 1994

Y1 - 1994

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.

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.

UR - http://www.scopus.com/inward/record.url?scp=0028410956&partnerID=8YFLogxK

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DO - 10.1080/02786829408959683

M3 - Article

AN - SCOPUS:0028410956

SN - 0278-6826

VL - 20

SP - 275

EP - 284

JO - Aerosol Science and Technology

JF - Aerosol Science and Technology

IS - 3

ER -

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

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