Connecting Bulk Viscosity Measurements to Kinetic Limitations on Attaining Equilibrium for a Model Aerosol Composition

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Fältnamn	Indikatorer	Metadata
000		03131naa a2200349 4500
001		oai:DiVA.org:su-107620
003		SwePub
008		140922s2014 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1076202 URI
024	7	a https://doi.org/10.1021/es501705c2 DOI
040		a (SwePub)su
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Booth, A. Murray4 aut
245	1 0	a Connecting Bulk Viscosity Measurements to Kinetic Limitations on Attaining Equilibrium for a Model Aerosol Composition
264		c 2014-08-08
264	1	b American Chemical Society (ACS),c 2014
338		a print2 rdacarrier
500		a AuthorCount:5;
520		a The growth, composition, and evolution of secondary organic aerosol (SOA) are governed by properties of individual compounds and ensemble mixtures that affect partitioning between the vapor and condensed phase. There has been considerable recent interest in the idea that SOA can form highly viscous particles where the diffusion of either water or semivolatile organics within the particle is sufficiently hindered to affect evaporation and growth. Despite numerous indirect inferences of viscous behavior from SOA evaporation or bounce within aerosol instruments, there have been no bulk measurements of the viscosity of well-constrained model aerosol systems of atmospheric significance. Here the viscous behavior of a well-defined model system of 9 dicarboxylic acids is investigated directly with complementary measurements and model predictions used to infer phase state. Results not only allow us to discuss the atmospheric implications for SOA formation through this representative mixture, but also the potential impact of current methodologies used for probing this affect in both the laboratory and from a modeling perspective. We show, quantitatively, that the physical state transformation from liquid-like to amorphous semisolid can substantially increase the importance of mass transfer limitations within particles by 7 orders of magnitude for 100 nm diameter particles. Recommendations for future research directions are given.
650	7	a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe
650	7	a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng
700	1	a Murphy, Benu Stockholms universitet,Institutionen för tillämpad miljövetenskap (ITM),Meteorologiska institutionen (MISU)4 aut0 (Swepub:su)bmurp
700	1	a Riipinen, Ilonau Stockholms universitet,Institutionen för tillämpad miljövetenskap (ITM)4 aut0 (Swepub:su)iriip
700	1	a Percival, Carl J.4 aut
700	1	a Topping, David O.4 aut
710	2	a Stockholms universitetb Institutionen för tillämpad miljövetenskap (ITM)4 org
773	0	t Environmental Science and Technologyd : American Chemical Society (ACS)g 48:16, s. 9298-9305q 48:16<9298-9305x 0013-936Xx 1520-5851
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-107620
856	4 8	u https://doi.org/10.1021/es501705c

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