ABSTRACT
Free a m i n o acids i n surface water have been preconcentrated o n A m b e r l i t e IR120 res in a n d conve r t ed in to the n -bu ty l -N-t r i f luoroace ty l esters (for gas l i q u i d ch romatography) argenine, cys t ine a n d lu t idene were no t e lu ted f rom an O V - 1 7 5 c o l u m n , a n d coe lu t ion of g lyc ine , serine, leuc ine a n d isoleucine w a s obse rved [1].
