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Quantitative determination of the o-phthaldialhehyde derivatives of noradrenaline , dopamine and normetadrenaline in urine with an amino acid analyzer Summary: Noradrenaline, dopamine and normetadrenaline in urine are separated by a cation-exchange resin (DC 6A, Durrum) and a commercially available amino acid analyzer. After separation, the ophthalaldehyde derivatives of the compounds are formed by the usual pumping system and are quantified with a fluorimeter. Pre-packed ion-exchange columns (Bio-Rad, Munich) are used for purification and fractionation of the urine samples.

Quantitative Bestimmung der o -Phthaldialdehyd-Derivate von Noradrenalin, Dopamin und Normetanephrin aus dem Urin mit einem Aminosäureanalysator