醇-水溶剂法从强心苷类植物中提取~（137）Cs
Extraction of Cs-137 by alcohol-water solvents from plants containing cardiac glycosides
摘要：
由于核电站事故，大片地区受到铯-137的放射性输入。这种铯积累在这些地区生长的草药中。问题是被放射性铯污染的草药是否可以用作药物的原料。答案取决于从受污染的原材料转移到药物中的Cs-137的数量。我们提出了新的结果，铯-137从污染洋地黄Mill。和铃兰（Convallaria majalis L.）医学。我们发现，Cs-137的萃取强烈依赖于溶剂的亲水性。例如96.5%（vol.）乙醇萃取Cs-137（11.6%）低于40%（vol.）乙醇或纯水（66.2%）。强心苷的溶解度与铯的溶解度相反，这可用于生产生态纯草药的工艺过程。
英文摘要：
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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