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Extraction of Cs-137 by alcohol-water solvents from plants containing cardiac glycosides

S. N. Dzyubak·Yu. I. Gubin·O. P. Dzyubak·P. V. Sorokin·V. F. Popov·A. A. Orlov·V. P. Krasnov
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Abstract

As a result of nuclear power plant accidents, large areas receive radioactive inputs of Cs-137. This cesium accumulates in herbs growing in such territories. The problem is whether the herbs contaminated by radiocesium may be used as a raw material for medicine. The answer depends on the amount of Cs-137 transfered from the contaminated raw material to the medicine. We have presented new results of the transfer of Cs-137 from contaminated Digitalis grandiflora Mill. and Convallaria majalis L. to medicine. We found that the extraction of Cs-137 depends strongly on the hydrophilicity of the solvent. For example 96.5%(vol.) ethyl alcohol extracts less Cs-137 (11.6%) than 40%(vol.) ethyl alcohol or pure water (66.2%). The solubility of the cardiac glycosides is inverse to the solubility of cesium, which may be of use in the technological processes for manufacturing ecologically pure herbal medicine.

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S. N. Dzyubak, Yu. I. Gubin, O. P. Dzyubak, P. V. Sorokin, V. F. Popov, A. A. Orlov, V. P. Krasnov. 2001-02-11. Extraction of Cs-137 by alcohol-water solvents from plants containing cardiac glycosides. https://arxiv.org/abs/physics/0102029

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