Abstract
A rapid radiochemical method has been developed for the separation of radium in the presence of excess calcium from environmental samples such as spring waters and marine sediments. Radium is preconcentrated by co-precipitation as carbonates along with other alkaline earths. Subsequently, most of the alkaline earths are complexed with EDTA at pH 7.5 and the solution is passed through a column of Zeokarb-225 (NH +4 ). Radium, along with traces of calcium, is sorbed on the exchanger. Radium is desorbed with 2N HNO3 and finally coprecipitated with 400 μg of barium as isulfate. The alphas of226Ra are counted in a silicon surface barrier detector and228Ra betas are counted in an end-window GM Counter.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
T. ISHIMORI, I. HATAE, J. Chem. Soc. Japan, Pure Chem. Sec. 77 (1956) 122.
L. U. JOSHI, A. K. GANGULY, Proc. Symp. on the Interaction of Radioactive Contaminants with the Constituents of the Marine Environment, Seattle, Washington, IAEA/SM-158/50, 1973, p. 747.
L. U. JOSHI, A. K. GANGULY, Geochim. Cosmochim. Acta, 40 (1976) 1491.
L. U. JOSHI, P. K. PADMANABHAN, Unpublished data, 1980.
L. U. JOSHI, Unpublished data, 1981.
L. U. JOSHI, A. K. GANGULY, Proc. Indian Acad. Sci, 85 (1977) 173.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Joshi, L.U., Padmanabhan, P.K. Rapid radiochemical separation of radium from environmental samples using ion-exchanger Zeokarb-225. J. Radioanal. Chem. 76, 73–79 (1983). https://doi.org/10.1007/BF02519656
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02519656