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Comparison of Batch And Autoradiographic Methods in Sorption Studies of Radionuclides In Rock And Mineral Samples

Published online by Cambridge University Press:  25 February 2011

S. Pinnioja ,
T. Jaakkola  and
J.K. Miettinen
S. Pinnioja
Affiliation:
University of Helsinki, Department of Radiochemistry, Unioninkatu 35, SF-00170 HELSINKI 17, Finland
T. Jaakkola
Affiliation:
University of Helsinki, Department of Radiochemistry, Unioninkatu 35, SF-00170 HELSINKI 17, Finland
J.K. Miettinen
Affiliation:
University of Helsinki, Department of Radiochemistry, Unioninkatu 35, SF-00170 HELSINKI 17, Finland
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Abstract

Sorption of 89Sr, 58Co, 134Cs and 241Am in rock and mineral samples was determined by the batch method using crushed sanmples and by autoradiographic method using rock thin sections. The rock samples were tonalite and rapakivi granite, representing the Olkiluoto and Loviisa nuclear power plant sites, respectively. The autoradiographic method was found to be applicable sorption of radionuclides in rock and mineral samles. The 8orption order of nuclides in rock samples was: KaAM> KaCs>KaCo> KaSr the sorption order of the different minerals was biotite> hornblende >plagioclase> potassium feldspar> quartz. Distribution coefficients (Ka) obtained by the batch and autoradiographic methods were of the same order of magnitude. Ka-values of Sr, Co, Cs and Am for tonalite were 5, 20, 190 and 40 × 10-4 m3/m2 by the batch method and 1, 9, 130 and 170 × 10-4 m3/m2 by the autoradiographic method.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 26: Symposium D – Scientific Basis for Nuclear Waste Management VII , 1983 , 979
Copyright
Copyright © Materials Research Society 1984

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References

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