Analysis of Melamine,Cyanuric Acid,Ammelide,and Ammeline Using Matrix-Assisted Laser Desorption Ionization/Time-of-Flight Mass Spectrometry (MALDI/TOFMS)

摘要

Melamine,cyanuric acid,two compounds connected to tainted pet food,and related analogs have been analyzed using matrix-assisted laser desorption ionization/time-of-flight mass spectrometry.(M + H)+ ions were observed for ammelide and ammeline under positive ion conditions with sinapinic acid as the matrix.With alpha-cyano-4-hydroxy-cinnamic acid as the matrix,a matrix-melamine complex was observed;however,no complex was observed with sinapinic acid as the matrix.(M - H)~- was observed for cyanuric acid with sinapinic acid as the matrix.