%0 Journal Article %T HIGH PERFORMANCE LIQUID CHROMATOGRAPHY CHIRAL SEPARATION OF D,L-PHENYLALANINE AND D,L-TRYPTOPHAN WITH QUATERNARY MOBILE PHASE MIXTURE BY COPPER MIXED CHELATE COMPLEXATION %A B. Sa£żdat %A Fouzia Boudah %A M.H. Guermouche %J Analele Universitatii Bucuresti : Chimie %D 2010 %I %X A simple and rapid HPLC enatioseparation of D,L-phenylalanine (Phe) and D,L tryptophan (DL-Trp) was developed. The resolution of enantiomers couples was based in the formation of mixed chelating complexes between copper (II) and L-histidine with quaternary mobile phase. The mobile phase was constituted of buffer ammonium acetate (pH=7), acetonitrile, isopentyl alcohol and isopropyl alcohol. An excellent separation of D, L couples was obtained with good selectivity and in no more than 15 min. %K HPLC %K Chiral separation %K D %K L-amino acids %K quaternary mobile phase %K copper mixed chelate complexation %U http://gw-chimie.math.unibuc.ro/anunivch/2010-2/AUBCh1927782.pdf