HVA and VMA in Urine

Homovanilic acid (HVA) and Vanillylmandelic acid (VMA) in urine are analyzed using Asahipak GS-320 7E ( a multimode column ) and electrochemical detection (ECD).
GS-320 7E is an old type of GS-320 HQ.



Sample : HVA and VMA

Column       : Shodex Asahipak GS-320 7E (7.5mmID*250mm)
Eluent       : 0.5M Citric buffer + 0.1M KCl (pH7.0)
Flow rate    : 1.0mL/min
Detector     : ECD(800mV vs Ag/AgCl)
Column temp. : 25deg-C

Courtesy of Dr. Iriyama, The Jikei University, School of Medicine