Journal article
Size matters in the water uptake and hygroscopic growth of atmospherically relevant multicomponent aerosol particles
The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, Vol.119(19), pp.4489-4497
05/14/2015
DOI: 10.1021/jp510268p
PMID: 25521409
Abstract
Understanding the interactions of water with atmospheric aerosols is crucial for determining the size, physical state, reactivity, and climate impacts of this important component of the Earth's atmosphere. Here we show that water uptake and hygroscopic growth of multicomponent, atmospherically relevant particles can be size dependent when comparing 100 nm versus ca. 6 μm sized particles. It was determined that particles composed of ammonium sulfate with succinic acid and of a mixture of chlorides typical of the marine environment show size-dependent hygroscopic behavior. Microscopic analysis of the distribution of components within the aerosol particles show that the size dependence is due to differences in the mixing state, that is, whether particles are homogeneously mixed or phase separated, for different sized particles. This morphology-dependent hygroscopicity has consequences for heterogeneous atmospheric chemistry as well as aerosol interactions with electromagnetic radiation and clouds.
Details
- Title: Subtitle
- Size matters in the water uptake and hygroscopic growth of atmospherically relevant multicomponent aerosol particles
- Creators
- Olga Laskina - †Department of Chemistry, and ‡Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesHolly S Morris - †Department of Chemistry, and ‡Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesJoshua R Grandquist - †Department of Chemistry, and ‡Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesZhen Qin - †Department of Chemistry, and ‡Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesElizabeth A Stone - †Department of Chemistry, and ‡Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesAlexei V Tivanski - †Department of Chemistry, and ‡Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52242, United StatesVicki H Grassian - †Department of Chemistry, and ‡Department of Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52242, United States
- Resource Type
- Journal article
- Publication Details
- The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, Vol.119(19), pp.4489-4497
- DOI
- 10.1021/jp510268p
- PMID
- 25521409
- NLM abbreviation
- J Phys Chem A
- ISSN
- 1089-5639
- eISSN
- 1520-5215
- Publisher
- United States
- Grant note
- P30 ES005605 / NIEHS NIH HHS
- Language
- English
- Date published
- 05/14/2015
- Academic Unit
- Occupational and Environmental Health; Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9983985938202771
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