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Determination of linear response in the detection of mixtures of aroma compounds by atmospheric pressure ionization–mass spectrometry (API–MS)
Author(s) -
Buffo Roberto A.,
Reineccius Gary A.
Publication year - 2008
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.1849
Subject(s) - chemistry , atmospheric pressure chemical ionization , mass spectrometry , chemical ionization , analytical chemistry (journal) , ionization , fragmentation (computing) , chromatography , ion , aroma , atmospheric pressure , linearity , polyatomic ion , organic chemistry , oceanography , physics , food science , quantum mechanics , computer science , geology , operating system
The linearity of atmospheric pressure ionization–mass spectrometry (API–MS) response in mixtures of aroma compounds was determined for a ‘homogeneous’ system (four esters) and a ‘heterogeneous’ system (five compounds of different chemical functionality). All combinations analysed within each system followed a saturation pattern as concentration increased. Total linear responses were determined by the linear behaviour of individual compounds. Ionization patterns within each mixture were explained by proton affinity data (i.e. the species' ability to accept protons), molecular reaction rates (defined by molecular weight), and product ion distribution (according to fragmentation of the corresponding parent ion). Copyright © 2007 John Wiley & Sons, Ltd.