Abstract
A radiochemical procedure is described for the measurement of 0.1 Bq 237Np in a solution containing similar activity concentrations of Th, U, Pu and Am as well as activity concentrations of 60Co, 90Sr and 137Cs one hundred times higher. A tracer of 239Np (milked from 243Am) was used as an isotopic spike for chemical yield determination. The relationship between gamma-counting geometries for ampoule (liquid) and NdF3 (solid) 239Np sources was established so that Np chemical yields could be measured by a comparative method. Efficiencies of alpha-spectrometers for 237Np in NdF3 sources were measured by a bootstrap technique. Two sets of experiments were designed and used to test out the procedure.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
S. C. Lee, J. M. R. Hutchinson, K. G. W. Inn, M. Thein, Health Phys., 68 (1995) 350.
B. G. Harvey, Introduction to Nuclear Physics and Chemistry, 2nd ed., Prentice-Hall, Inc., 1969, p. 392.
M. Eisenbud, Environmental Radioactivity: Natural, Industrial and Military Sources, 3rd ed., Academic Press, Inc., 1987, p. 276.
P. Lindahl, P. Roos, M. Eriksson, E. Holm, J. Environ. Radioact., 73 (2004) 73.
P. Lindahl, P. Roos, E. Holm, H. Dahlgaard, J. Environ. Radioact., 82 (2005) 285.
J. M. Kelley, L. A. Bond, T. M. Beasley, Sci. Total Environ., 237/238 (1999) 483.
E. Holm, Impacts of Radionuclide Release to the Marine Environment, IAEA, Vienna (STI/PUB/565), 1981, p. 151.
C.-K. Kim, S. Morita, R. Seki, Y. Takaku, N. Ikeda, D. J. Assinder, J. Radioanal. Nucl. Chem., 156 (1992) 200.
K. Bunzl, H. Kofuji, W. Schimmack, A. Tsumura, K. Ueno, M. Yamamoto, Health Phys., 68 (1995) 89.
T. M. Beasley, J. M. Kelley, T. C. Maiti, L. A. Bond, J. Environ. Radioact., 38 (1998) 133.
T. C. Kenna, F. L. Sayles, J. Environ. Radioact., 60 (2002) 105.
Z. Wu, K. G. W. Inn, Z. Lin, C. A. Mcmahon, J. Radioanal. Nucl. Chem., 248 (2001) 155.
D. S. Sill, S. E. Bohrer, Radioact. Radiochem., 11 (2000) 7.
National Institute of Standards and Technology Certificate, Standard Reference Material 4341, Radioactivity Standard Neptunium-237, 1993.
J. La Rosa, J. Gastaud, L. Lagan, S.-H. Lee, I. Levy-Palomo, P. P. Povinec, E. Wyse, J. Radioanal. Nucl. Chem., 263 (2005) 427.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
La Rosa, J., Outola, I., Crawford, E. et al. Radiochemical measurement of 237Np in a solution of mixed radionuclides: Experiences in chemical separation and alpha-spectrometry. J Radioanal Nucl Chem 277, 11–18 (2008). https://doi.org/10.1007/s10967-008-0702-y
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10967-008-0702-y