| abstract |
A pretreatment method of samples, in which injections of samples are performed efficiently and precisely when amino acids are analyzed with a mass spectrometer, is provided. For the analysis method of samples including analyte comprising amino acid, amine and/or peptide with mass spectrometry, said analyte is derivatized with a modification reagent, said derivative is subjected to a microchip electrophoresis, and then eluate from said microchip electrophoresis is introduced into a mass spectrometer. |