by LRMS measurements it is not possible to differentiate between imazalil, C₁₄H₁₄C₁₂N₂O (14×12 + 14×1 + 2×35 + 2×14 + 1×16 =296 u), and flunixin, C₁₄H₁₁F₃N₂O₂ (14×12 + 11×1 + 3×19 + 2×14 + 2×16=296 u), pesticides. However, this would be possible by using exact mass measurements, imazalil C₁₄H₁₄C₁₂N₂O (14×12 + 14×1.007825 + 2×34.968852 + 2×14.003074 + 1×15.994915=296.048317 u) and flunixin C₁₄H₁₁F₃N₂O₂ (14× 12 + 11×1.007825 + 3×18.998403 + 2×14.003074 + 2×15.994915=296.077262 u).

p3, Applications in High Resolution Mass Spectrometrey Food Safety and Pesticide Residue Analysis, edited by Roberto Romero-González, ©2017 ELSEVIER.