Analysis of secondary organic aerosol formation and aging using positive matrix factorization of high-resolution aerosol mass spectra: application to the dodecane low-NOx system
Item
Title (Dublin Core)
Analysis of secondary organic aerosol formation and aging using positive matrix factorization of high-resolution aerosol mass spectra: application to the dodecane low-NOx system
Description (Dublin Core)
Positive matrix factorization (PMF) of high-resolution laboratory chamber aerosol mass spectra is applied for the first time, the results of which are consistent with molecular level MOVI-HRToF-CIMS aerosol-phase and CIMS gas-phase measurements. Secondary organic aerosol was generated by photooxidation of dodecane under low-NO<sub>x</sub> conditions in the Caltech environmental chamber. The PMF results exhibit three factors representing a combination of gas-particle partitioning, chemical conversion in the aerosol, and wall deposition. The slope of the measured high-resolution aerosol mass spectrometer (HR-ToF-AMS) composition data on a Van Krevelen diagram is consistent with that of other low-NO<sub>x</sub> alkane systems in the same O : C range. Elemental analysis of the PMF factor mass spectral profiles elucidates the combinations of functionality that contribute to the slope on the Van Krevelen diagram.
Creator (Dublin Core)
Craven, J. S.
Yee, L. D.
Ng, N. L.
Canagaratna, M. R.
Loza, C. L.
Schilling, K. A.
Yatavelli, R. L. N.
Thornton, J. A.
Ziemann, P. J.
Flagan, R. C.
Seinfeld, J. H.
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-12-11795-2012
https://acp.copernicus.org/articles/12/11795/2012/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
