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  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

Effect of Cation Complexation of Hindered Phenol Antioxidants on their Fragmentation in Electrospray Ionization Tandem Mass Spectrometry

Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2021, v.12 no.4, pp.159-162
Yim Yong-Hyeon (Korea Research Institute of Standards and Science (KRISS))
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The fragmentation pattern of four hindered phenol antioxidants was investigated using ammonium and lithium ions as the additives for ionization. Due to different binding geometries and interactions, they underwent different characteristic frag-mentation reactions providing useful complementary information for structural analysis of hindered phenol antioxidants. Ammonium ion adducts were fragmented successively until all t-butyl groups were lost in the form of isobutylene and allowed the esti-mation of the number of t-butyl groups present in the molecule. Lithium ion adducts produced fragment ions from major backbone cleavage, on the other hand, which provide more crucial information for the identification of detailed backbone structure.

hindered phenol antioxidant, fragmentation, ammonium ion adduct, lithium ion adduct

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