Relative contributions of selected multigeneration products to chamber SOA formed from photooxidation of a range (C₁₀-C₁₇) of <i>n</i>-alkanes under high NO _<i>x</i> conditions.

ABSTRACT: A series of chamber experiments was conducted to investigate the composition of secondary organic aerosol (SOA) following oxidation of a range of parent n-alkanes (C₁₀-C₁₇) in the presence of NO _x . The relative contribution of selected species representing first, second, and higher generation products to SOA mass was measured using a high-resolution aerosol mass spectrometer. Gas chromatography was also used for a limited set of amenable species. Relative contributions varied substantially across the range of investigated alkanes reflecting slight changes in SOA composition. The contribution of first-generation cyclic hemiacetal is minimal toward the small end of the investigated range and gradually increase with n-alkane size. The rel

SUBMITTER: Docherty KS 

PROVIDER: S-EPMC7751666 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature