A Fast-Scanning DMA Train for Precision Quantification of Early Nanoparticle Growth

Paul M. Winkler, John Ortega, Thomas Karl, Peter H. McMurry, James N. Smith

Veröffentlichungen: Beitrag in BuchBeitrag in Konferenzband

Abstract

Understanding the mechanisms of secondary organic aerosol formation is of critical importance for assessing aerosol radiative forcing and improving air quality control. A key quantity describing the gas-to-particle conversion is the rate at which nanoparticles of certain size are formed per unit volume and time. The quantification of nanoparticle formation rates requires precise knowledge of growth rates. Here we present a newly developed DMA train capable of providing definitive growth rates from size distribution scan frequencies of 1 Hz. This system has proven to yield statistically significant data even at ultra-low post-classification concentrations of 0.1 cm−3. A chamber study of α-pinene ozonolysis under close-to-ambient conditions demonstrates the need for particle size distribution measurements with increased time resolution
OriginalspracheEnglisch
TitelNUCLEATION AND ATMOSPHERIC AEROSOLS
Redakteure*innenPJ DeMott, CD ODowd
ErscheinungsortMELVILLE
Herausgeber (Verlag)American Institute of Physics
Seiten165-168
Seitenumfang4
DOIs
PublikationsstatusVeröffentlicht - 2013
Veranstaltung19th International Conference on Nucleation and Atmospheric Aerosols (ICNAA) - Fort Collins, Colorado State University, Fort Collins, Kolumbien
Dauer: 23 Juni 201328 Juni 2013
http://chem.atmos.colostate.edu/icnaa/

Publikationsreihe

ReiheAIP Conference Proceedings
Band1527
ISSN0094-243X

Konferenz

Konferenz19th International Conference on Nucleation and Atmospheric Aerosols (ICNAA)
Land/GebietKolumbien
OrtFort Collins
Zeitraum23/06/1328/06/13
Internetadresse

ÖFOS 2012

  • 1030 Physik, Astronomie
  • 103008 Experimentalphysik
  • 105904 Umweltforschung

Zitationsweisen