Identification and Quantification of Particle Growth Channels During New Particle Formation

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dc.contributor.utaustinauthorPetaja, T.en_US
dc.contributor.utaustinauthorKulmala, M.en_US
dc.contributor.utaustinauthorWorsnop, D. R.en_US
dc.creatorPennington, M. R.en_US
dc.creatorBzdek, B. R.en_US
dc.creatorDePalma, J. W.en_US
dc.creatorSmith, J. N.en_US
dc.creatorKortelainen, A. M.en_US
dc.creatorRuiz, L. H.en_US
dc.creatorPetaja, T.en_US
dc.creatorKulmala, M.en_US
dc.creatorWorsnop, D. R.en_US
dc.creatorJohnston, M. V.en_US
dc.date.accessioned2016-10-28T19:52:33Z
dc.date.available2016-10-28T19:52:33Z
dc.date.issued2013en_US
dc.description.abstractAtmospheric new particle formation (NPF) is a key source of ambient ultrafine particles that may contribute substantially to the global production of cloud condensation nuclei (CCN). While NPF is driven by atmospheric nucleation, its impact on CCN concentration depends strongly on atmospheric growth mechanisms since the growth rate must exceed the loss rate due to scavenging in order for the particles to reach the CCN size range. In this work, chemical composition measurements of 20 nm diameter particles during NPF in Hyytiala, Finland, in March-April 2011 permit identification and quantitative assessment of important growth channels. In this work we show the following: (A) sulfuric acid, a key species associated with atmospheric nucleation, accounts for less than half of particle mass growth during this time period; (B) the sulfate content of a growing particle during NPF is quantitatively explained by condensation of gas-phase sulfuric acid molecules (i.e., sulfuric acid uptake is collision-limited); (C) sulfuric acid condensation substantially impacts the chemical composition of preexisting nanoparticles before new particles have grown to a size sufficient to be measured; (D) ammonium and sulfate concentrations are highly correlated, indicating that ammonia uptake is driven by sulfuric acid uptake; (E) sulfate neutralization by ammonium does not reach the predicted thermodynamic end point, suggesting that a barrier exists for ammonia uptake; (F) carbonaceous matter accounts for more than half of the particle mass growth, and its oxygen-to-carbon ratio (similar to 0.5) is characteristic of freshly formed secondary organic aerosol; and (G) differences in the overall growth rate from one formation event to another are caused by variations in the growth rates of all major chemical species, not just one individual species.en_US
dc.description.departmentChemical Engineeringen_US
dc.description.sponsorshipUS National Science Foundation (NSF) CHE-1110554en_US
dc.description.sponsorshipERC Advanced Grant "ATMNUCLE" 22746en_US
dc.description.sponsorshipAcademy of Finland Centre of Excellence program 1118615en_US
dc.description.sponsorshipSaastamoinen Foundationen_US
dc.description.sponsorshipUS Department of Energy DE-FG-02-05ER63997en_US
dc.description.sponsorshipUS NSF 1137757en_US
dc.description.sponsorshipUS NSFen_US
dc.description.sponsorshipUniversity of Delaware Center for Critical Zone Researchen_US
dc.description.sponsorshipEPA STAR FP-91731501en_US
dc.identifierdoi:10.15781/T24F1MM8J
dc.identifier.citationPennington, M. R., Bryan R. Bzdek, Joseph W. DePalma, J. N. Smith, A-M. Kortelainen, L. Hildebrandt Ruiz, T. Petäjä, M. Kulmala, D. R. Worsnop, and M. V. Johnston. "Identification and quantification of particle growth channels during new particle formation." Atmospheric Chemistry and Physics, Vol. 13, No. 20 (2013): 10215-10225.en_US
dc.identifier.doi10.5194/acp-13-10215-2013en_US
dc.identifier.issn1680-7316en_US
dc.identifier.urihttp://hdl.handle.net/2152/43299
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAtmospheric Chemistry and Physicsen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectaerosol mass-spectrometeren_US
dc.subjectsulfuric-aciden_US
dc.subjectatmospheric particlesen_US
dc.subjectchemical-compositionen_US
dc.subjectultrafine particlesen_US
dc.subjectboreal foresten_US
dc.subjectquantitativeen_US
dc.subjectassessmenten_US
dc.subjectorganic-acidsen_US
dc.subjectnucleationen_US
dc.subjectnanoparticlesen_US
dc.subjectmeteorology & atmospheric sciencesen_US
dc.titleIdentification and Quantification of Particle Growth Channels During New Particle Formationen_US
dc.typeArticleen_US

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