Simultaneous Separation of Melamine and Cyanuric Acid

chr_286.gif Melamine is an organic basic compound that is derived from cyanamide. It contains 66% nitrogen by mass. Addition of melamine is used to increase protein count in milk products. Cyanuric acid is a trimer of cyanic acid. Melamine and cyanuric acid can form a insoluble complex. Both compounds has been linked as additives to modify nitrogen count in products. Cyanuric acid is a slightly acidic hydrophilic compound, while melamine is a basic hydrophilic compound. Both compounds were separated on Obelisc R reversed-phase ion-exchange column with LC/Ms compatible mobile phase. Method can be used for generic analysis of basic and acidic compounds with LC/MS compatible conditions.  


Column Obelisc N, 4,6x150 mm, 5 µm, 100A
Mobile Phase MeCN
Buffer AmAc
Flow Rate 1.0 ml/min
Detection ELSD 50C


Class of Compounds  Acid,  Hydrophobic, Ionizable
Analyzing Compounds Melamine,  Cyanuric Acid

Application Analytes:
Cyanuric Acid
Melamine (1,3,5-triazine-2,4,6-triamine)