Abstract
The rare-earth elements are very suitable multiple particulate markers for the investigation of matter flow in the gastro-intestinal tract of animals by means of the indicator activation method. A rapid determination of cerium and samarium in biological samples is possible with the aid of a 14 MeV neutron generator. The activity of139mCe has to be corrected for the interferences of28Al and143mSm. For the determination of samarium the radionuclides155Sm and153Sm are used. In order to increase the specific activity of these nuclides, which are produced mainly by means of nuclear reactions with thermal neutrons, the samples are irradiated inside a polyethylene moderator block. The deviation from the linearity of the calibration curve for samarium is discussed.
Similar content being viewed by others
References
G. F. HARTNELL, L. D. SATTER, J. Anim. Sci., 48 (1979) 375.
D. H. GRAY, J. R. VOGT, J. Agr. Food Chem., 22 (1974) 144.
V. CERCASOV, Aktivierungsanalyse mit 14 MeV-Neutronen an Aerosolen, Thesis Univ. Hohenheim, 1978.
V. CERCASOV, J. Radioanal. Chem., 52 (1979) 399.
L. A. CURRIE, Anal. Chem., 40 (1968) 586.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Cercasov, V., Heller, R. Application of 14 MeV neutron activation analysis to the determination of Ce and Sm markers in biological materials. J. Radioanal. Chem. 60, 453–459 (1980). https://doi.org/10.1007/BF02518905
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02518905