Modified proton transfer reaction mass spectrometry (PTR-MS) operating conditions for in vitro and in vivo analysis of wine aroma

Abstract : With proton transfer reaction-mass spectrometry standard operating conditions, analysis of alcoholic beverages is an analytical challenge. Ethanol reacts with the primary ion H3O⁺ leading to its depletion and to formation of ethanol-related ions and clusters, resulting in unstable ionization and in significant fragmentation of analytes. Different methods were proposed but generally resulted in lowering the sensitivity and/or complicating the mass spectra. The aim of the present study was to propose a simple, sensitive and reliable method with fragmentation as low as possible, linearity within a realistic range of volatile organic compounds concentrations, and applicability to in vivo dynamic aroma release (nosespace) studies of wines. Modified Proton Transfer Reaction Mass Spectrometry (PTR‐MS) operating conditions... | Request PDF. Available from: https://www.researchgate.net/publication/320249191_Modified_Proton_Transfer_Reaction_Mass_Spectrometry_PTR-MS_operating_conditions_for_in_vitro_and_in_vivo_analysis_of_wine_aroma [accessed Feb 13 2018].