Alm. Riley et Dp. Nowotnik, THE DETERMINATION OF CHARGE OF CATIONIC TC-99M-RADIOPHARMACEUTICALS, Journal of liquid chromatography, 17(3), 1994, pp. 533-548
Cation exchange HPLC methods for the determination of charge of cation
ic Tc-99m-complexes were developed, based on a method described previo
usly for anions. Non-specific retention of lipophilic complexes was re
duced by the addition of acetonitrile. The method was validated using
a number of metal salts, and was used to confirm the charges on severa
l lipophilic technetium cationic complexes.