novel derivative method for the determination of amino acids was developed by the use of 2,4 dinitrofluorobenzen.16 kinds of amino acids were analyzed with high performance capillary electrophoresis.The conditions of derivatization were studied to find an optimal procedure,which included the reaction time,reaction temperature and pH value.The observation of stability shows the products of derivatization of amino acids stay steady for five days at 4℃ or 25℃.The linearity of this assay was 10~700μmol/L,and t...