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

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

2001-02-11

arxiv.org/abs/physics/0102029v1

Physics

Medical Physics

8 pages, LaTex, submitted to Applied Radiation and Isotopes

Scientific paper

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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