Nickel-63 is separated from fission and corrosion products by anion ion-exchange resins and organic extractions. Nickel-63 is purified in chloroform as nickel dimethylglyoxime and back extracted with dilute HCl and then complexed with ammonium thiocyanate and precipitated with pyridine. Nickel precipitate is then dissolved in cocktail for counting with a liquid scintillation counter.
Ni carrier (10.0 mg/mL)
Fe, Co, Cs, Mn hold-back carrier (~10 mg/mL)
Anion resin—AG 1×10 50–100 mesh chloride form
Dimethylglyoxime—1% solution in Ethanol
Liquid scintillation (POPOP solution) cocktail
Analytical filter paper pulp—Ash free
NH4SCN 1% solution+Pyridine 1% solution=rinse solution