Determination of amino acids by on-line capillary electrophoresis-electrospray ionization mass spectrometry.

Abstract

On-line capillary electrophoresis-electrospray ionization mass spectrometry (CE-ESMS) has been used for the separation and detection of amino acid mixtures. Four natural amino acids, histidine, tryptophan, phenylalanine, aspartic acid, and a tripeptide, glutathione, were separated and determined. Protonated molecules were detected in the CE-ESMS mode with… (More)

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