| abstract |
A sample pretreatment method for efficiently and accurately injecting a sample when an amino acid is analyzed by a mass spectrometer is provided. In a method for analyzing a sample containing an analyte consisting of an amino acid, an amine, and / or a peptide by mass spectrometry, the analyte is derivatized with a modifying reagent, the derivative is subjected to microchip electrophoresis, and The eluate from the microchip electrophoresis is introduced into a mass spectrometer. [Selection figure] None |