Radical Generation from the Gas-Phase Activation of Ionized Lipid Ozonides.

ABSTRACT: Reaction products from the ozonolysis of unsaturated lipids at gas-liquid interfaces have the potential to significantly influence the chemical and physical properties of organic aerosols in the atmosphere. In this study, the gas-phase dissociation behavior of lipid secondary ozonides is investigated using ion-trap mass spectrometry. Secondary ozonides were formed by reaction between a thin film of unsaturated lipids (fatty acid methyl esters or phospholipids) with ozone before being transferred to the gas phase as [M + Na]⁺ ions by electrospray ionization. Activation of the ionized ozonides was performed by either energetic collisions with helium buffer-gas or laser photolysis, with both processes yielding similar product distributions. Products arising from the decomposition o

SUBMITTER: Ellis SR 

PROVIDER: S-EPMC5486690 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature