Electrodeposition of some Alpha-Emitting Nuclides and its Isotope Determination by Alpha Spectrometry

몇가지 알파입자 방출 핵종의 전해석출 및 알파 스펙트럼 측정에 의한 그의 동위원소 정량

  • Key-Suck Jung (Korea Advanced Energy Research Institute, Dae-Duck Engineering Center) ;
  • In-Suck Suh (Korea Advanced Energy Research Institute, Dae-Duck Engineering Center)
  • 정기석 (한국에너지연구소 대덕공학센터) ;
  • 서인석 (한국에너지연구소 대덕공학센터)
  • Published : 1983.08.20

Abstract

An apparatus was made for the electrodeposition of alpha emitting actinide nuclides, $^{207}Bi$ and $^{210}Po$. The electrodeposition was made on a polished stainless steel plate cathode. The anode was made of platinum wire and to stir the solution. With the ammonium chloride as electrolyte initial pH = 4, chloride concentration = 0.6M and solution volume = 15ml, a current of 1.5 ampere(current density = 0.59A/$cm^2$) was flowed for 100 minutes for the quantitative recovery of electrodeposition and on average recovery of 98.3% was obtained within ${\pm}$0.7% uncertainty. Alpha spectrometry of the electrodeposited sample showed alpha peaks from $^{210}Po, ^{234}U$ and $^{239}Pu$ having energy resolution (FWHM) of 18.3, 21.8 and 36.0 keV respectively. The electrodeposition and alpha spectrometry for a natural uranium sample of domestic origin gave $^{238}U : ^{234}U = 1 : 6.1{\times}10^{-5}$ and for a neutron-irradiated uranium sample did $^{238}U : ^{239}Pu : ^{241}Am = 100 : 0.0263 : 5.20{times}10^{-5}$. The result of $^{238}U$ determination in the irradiated sample by electrodeposition-alpha spectrometry was in accord within ${\pm}1.6%$ of relative error with the results of solid fluorimetry and mass spectrometry. For $^{239}Pu$ the result of electrodeposition-alpha spectrometry was in accord within ${\pm}$4.0% of relative error with the results of anion exchange separation and the thenoyltrifluoroacetone(TTA) extraction both followed by alpha spectrometries.

Keywords

References

  1. Anal. Chem. v.54 no.7 R. F. Anderson;A. P. Fleer
  2. Anal. Chim. Acta v.117 A. Delle Site(et al.)
  3. J. Inorg. Nucl. Chem. v.27 G. Smith;G. A. Barnett
  4. The Nuclear Properties of the Heavy Elements v.II E. K. Hyde(et al.)
  5. Nuclear Chemistry G. R. Choppin;J. Rydberg
  6. Anal. Chem. v.32 no.3 R. F. Mitchell
  7. Anal. Chem. v.44 no.2 N.A. Talbitie
  8. Anal. Chem. v.44 no.2 K. W. Puphal;D. R. Olsen
  9. Anal. Chem. v.44 no.7 K. W. Puphal;D. R. Olsen
  10. Eisei Shikensho Hokoku v.97 K. Kametani;H. Kawakami
  11. IAEA-SM-252/8 W. A. Kolb;R. J. Krupa
  12. Z. Anal. Chem. v.276 O. Frindik
  13. Anal. Chem. v.36 no.20 M. Y. Donnan;E. K. Dukes
  14. Chart of the Nuclides F. W. Walker(et al.)
  15. KAERI/RR-304/81 Development of Chemical Analysis Techniques In-Suk Suh(et al.)