E.4 DETERMINATION OF NICKEL-63

E.4.1 Principle of Analyses

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.

E.4.2 Separation and Purification

  1. Reagants

    Ni carrier (10.0 mg/mL)

    Fe, Co, Cs, Mn hold-back carrier (~10 mg/mL)

    HCl—6N concentrated

    NaOH—1N

    NH4OH—concentrated

    Anion resin—AG 1×10 50–100 mesh chloride form

    Dimethylglyoxime—1% solution in Ethanol

    Liquid scintillation (POPOP solution) cocktail

    Toluene

    Chloroform

    Analytical filter paper pulp—Ash free

    Pyridine

    NH4SCN 1% solution+Pyridine 1% solution=rinse solution

    NH4SCN—20% solution

    HAC-1N

    Alconex—0.25%



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement