Manjón G, Vioque I, Moreno H, García-Tenorio R, García-León M
E.T.S. Arquitectura, Universidad de Sevilla, Departamento de Fisica Aplicada, Spain.
Appl Radiat Isot. 1997 Apr;48(4):535-40. doi: 10.1016/s0969-8043(96)00297-7.
A method for the determination of Ra-isotopes in water samples has been developed. Ra is coprecipitated with Ba as sulphate. The precipitate is then dissolved with EDTA and counted with a liquid scintillation system after mixing with a scintillation cocktail. The study of the temporal evolution of the separated activity gives the isotopic composition of the sample, i.e. the 224Ra and 226Ra contribution to the total activity. The method has been applied to some Spanish drinking waters.
已开发出一种测定水样中镭同位素的方法。镭以硫酸盐形式与钡共沉淀。然后将沉淀物用乙二胺四乙酸溶解，并与闪烁鸡尾酒混合后用液体闪烁系统计数。对分离出的放射性活度随时间变化的研究给出了样品的同位素组成，即224镭和226镭对总活度的贡献。该方法已应用于一些西班牙饮用水中。
