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Hygroscopic properties of aminium sulfate aerosols

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Hygroscopic properties of aminium sulfate aerosols. / Rovelli, Grazia; Miles, Rachael; Reid, Jonathan; Clegg, Simon L.

In: Atmospheric Chemistry and Physics, Vol. 17, 31.03.2017, p. 4369-4385.

Research output: Contribution to journalArticle

Harvard

Rovelli, G, Miles, R, Reid, J & Clegg, SL 2017, 'Hygroscopic properties of aminium sulfate aerosols', Atmospheric Chemistry and Physics, vol. 17, pp. 4369-4385. https://doi.org/10.5194/acp-17-4369-2017

APA

Rovelli, G., Miles, R., Reid, J., & Clegg, S. L. (2017). Hygroscopic properties of aminium sulfate aerosols. Atmospheric Chemistry and Physics, 17, 4369-4385. https://doi.org/10.5194/acp-17-4369-2017

Vancouver

Rovelli G, Miles R, Reid J, Clegg SL. Hygroscopic properties of aminium sulfate aerosols. Atmospheric Chemistry and Physics. 2017 Mar 31;17:4369-4385. https://doi.org/10.5194/acp-17-4369-2017

Author

Rovelli, Grazia ; Miles, Rachael ; Reid, Jonathan ; Clegg, Simon L. / Hygroscopic properties of aminium sulfate aerosols. In: Atmospheric Chemistry and Physics. 2017 ; Vol. 17. pp. 4369-4385.

Bibtex

@article{ef16183e3eb948bd970e3150253cd778,
title = "Hygroscopic properties of aminium sulfate aerosols",
abstract = "Alkylaminium sulfates originate from the neutralisation reaction between short-chained amines and sulfuric acid and have been detected in atmospheric aerosol particles. Their physicochemical behaviour is less well characterised than their inorganic equivalent, ammonium sulfate, even though they play a role in atmospheric processes such as the nucleation and growth of new particles and cloud droplet formation. In this work, a comparative evaporation kinetics experimental technique using a cylindrical electrodynamic balance is applied to determine the hygroscopic properties of six short-chained alkylaminium sulfates, specifically mono-, di-, and tri-methylaminium sulfate and mono-, di-, and tri-ethyl aminium sulfate. This approach allows for the retrieval of a water-activity-dependent growth curve in less than 10 s, avoiding the uncertainties that can arise from the volatilisation of semi-volatile components. Measurements are made on particles > 5 µm in radius, avoiding the need to correct equilibrium measurements for droplet-surface curvature with assumed values of the droplet-surface tension. Variations in equilibrium solution droplet composition with varying water activity are reported over the range 0.5 to > 0.98, along with accurate parameterisations of solution density and refractive index. The uncertainties in water activities associated with the hygroscopicity measurements are typically < ±0.2 {\%} at water activities > 0.9 and  ∼  ±1 {\%} below 0.9, with maximum uncertainties in diameter growth factors of ±0.7 {\%}. Comparison with previously reported measurements show deviation across the entire water activity range.",
author = "Grazia Rovelli and Rachael Miles and Jonathan Reid and Clegg, {Simon L.}",
year = "2017",
month = "3",
day = "31",
doi = "10.5194/acp-17-4369-2017",
language = "English",
volume = "17",
pages = "4369--4385",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "Copernicus GmbH",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Hygroscopic properties of aminium sulfate aerosols

AU - Rovelli, Grazia

AU - Miles, Rachael

AU - Reid, Jonathan

AU - Clegg, Simon L.

PY - 2017/3/31

Y1 - 2017/3/31

N2 - Alkylaminium sulfates originate from the neutralisation reaction between short-chained amines and sulfuric acid and have been detected in atmospheric aerosol particles. Their physicochemical behaviour is less well characterised than their inorganic equivalent, ammonium sulfate, even though they play a role in atmospheric processes such as the nucleation and growth of new particles and cloud droplet formation. In this work, a comparative evaporation kinetics experimental technique using a cylindrical electrodynamic balance is applied to determine the hygroscopic properties of six short-chained alkylaminium sulfates, specifically mono-, di-, and tri-methylaminium sulfate and mono-, di-, and tri-ethyl aminium sulfate. This approach allows for the retrieval of a water-activity-dependent growth curve in less than 10 s, avoiding the uncertainties that can arise from the volatilisation of semi-volatile components. Measurements are made on particles > 5 µm in radius, avoiding the need to correct equilibrium measurements for droplet-surface curvature with assumed values of the droplet-surface tension. Variations in equilibrium solution droplet composition with varying water activity are reported over the range 0.5 to > 0.98, along with accurate parameterisations of solution density and refractive index. The uncertainties in water activities associated with the hygroscopicity measurements are typically < ±0.2 % at water activities > 0.9 and  ∼  ±1 % below 0.9, with maximum uncertainties in diameter growth factors of ±0.7 %. Comparison with previously reported measurements show deviation across the entire water activity range.

AB - Alkylaminium sulfates originate from the neutralisation reaction between short-chained amines and sulfuric acid and have been detected in atmospheric aerosol particles. Their physicochemical behaviour is less well characterised than their inorganic equivalent, ammonium sulfate, even though they play a role in atmospheric processes such as the nucleation and growth of new particles and cloud droplet formation. In this work, a comparative evaporation kinetics experimental technique using a cylindrical electrodynamic balance is applied to determine the hygroscopic properties of six short-chained alkylaminium sulfates, specifically mono-, di-, and tri-methylaminium sulfate and mono-, di-, and tri-ethyl aminium sulfate. This approach allows for the retrieval of a water-activity-dependent growth curve in less than 10 s, avoiding the uncertainties that can arise from the volatilisation of semi-volatile components. Measurements are made on particles > 5 µm in radius, avoiding the need to correct equilibrium measurements for droplet-surface curvature with assumed values of the droplet-surface tension. Variations in equilibrium solution droplet composition with varying water activity are reported over the range 0.5 to > 0.98, along with accurate parameterisations of solution density and refractive index. The uncertainties in water activities associated with the hygroscopicity measurements are typically < ±0.2 % at water activities > 0.9 and  ∼  ±1 % below 0.9, with maximum uncertainties in diameter growth factors of ±0.7 %. Comparison with previously reported measurements show deviation across the entire water activity range.

U2 - 10.5194/acp-17-4369-2017

DO - 10.5194/acp-17-4369-2017

M3 - Article

VL - 17

SP - 4369

EP - 4385

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

ER -