Abstract
Naturally available monosaccharides, D-mannose, D-galactose and D-glucose, have been used for the first time as chiral co-matrices for chiral recognition of α -phenylethylamine. The liquid secondary ion (LSI) mass spectra of a mixture of D-mannose and (R)- or (S)α -phenylethylamine in the presence of benzylamine as reference compound and glycerol as matrix showed [(mannose + (R)- / (S)-α phenylethylamine + H) – H2O] + (a) and [(mannose + benzylamine + H)–H2O] + (b) ions. The significant difference was observed in the relative peak intensity (RPI) values calculated from the ion abundances of ion a and b. The RPI values for (R)- and (S)-α phenylethylamine are RPIR = 0.79 and RPIS = 1.34, respectively. The efficiency of the chiral recognition property of D-mannose is demonstrated in estimating the enantiomeric excess of α -phenylethylamine.
Published Version
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