Studies of single aerosol particles containing malonic acid, glutaric acid, and their mixtures with sodium chloride. I. Hygroscopic growth

Pope, FD, Dennis-Smither, BJ, Griffiths, PT, Clegg, SL and Cox, RA (2010) Studies of single aerosol particles containing malonic acid, glutaric acid, and their mixtures with sodium chloride. I. Hygroscopic growth. Journal of Physical Chemistry A, 114 (16). pp. 5335-5341.

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Abstract

We describe a newly constructed electrodynamic balance with which to measure the relative mass of single aerosol particles at varying relative humidity. Measurements of changing mass with respect to the relative humidity allow mass (m) growth factors (maqueous/mdry) and diameter (d) growth factors (daqueous/ddry) of the aerosol to be determined. Four aerosol types were investigated: malonic acid, glutaric acid, mixtures of malonic acid and sodium chloride, and mixtures of glutaric acid and sodium chloride. The mass growth factors of the malonic acid and glutaric acid aqueous phase aerosols, at 85% relative humidity, were 2.11 ± 0.08 and 1.73 ± 0.19, respectively. The mass growth factors of the mixed organic/inorganic aerosols are dependent upon the molar fraction of the individual components. Results are compared with previous laboratory determinations and theoretical predictions.

Item Type: Article
Faculty \ School: Faculty of Science > School of Environmental Sciences
University of East Anglia > Faculty of Science > Research Groups > Marine and Atmospheric Sciences
University of East Anglia > Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences
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Depositing User: Rosie Cullington
Date Deposited: 15 Feb 2011 16:11
Last Modified: 04 Sep 2018 16:31
URI: https://ueaeprints.uea.ac.uk/id/eprint/20397
DOI: 10.1021/jp100059k

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