Dietz M L, Horwitz E P, Nelson D M, Wahlgren M
Chemistry Division, Argonne National Laboratory, IL 60439.
Health Phys. 1991 Dec;61(6):871-7. doi: 10.1097/00004032-199112000-00020.
A method has been developed for the rapid isolation and quantitation of 89Sr and 90Sr in urine samples. The radiostrontium is concentrated from the bulk urine sample by coprecipitation with calcium phosphate. The precipitate is then wet ashed with nitric acid, and a solution of the resulting residue in 2 M HNO3-0.5 M Al(NO3)3 is passed through an extraction chromatographic column containing a supported crown ether that preferentially retains strontium. Sorbed strontium may then be eluted from the column with either dilute HNO3 or water and counted via liquid scintillation. A new counting scheme that permits quantitation of both 89Sr and 90Sr on the same day the separation is performed is described.
已开发出一种用于快速分离和定量尿样中89Sr和90Sr的方法。通过与磷酸钙共沉淀从大量尿样中富集放射性锶。然后将沉淀物用硝酸进行湿式灰化，所得残渣在2M HNO3 - 0.5M Al(NO3)3中的溶液通过装有优先保留锶的负载冠醚的萃取色谱柱。然后可用稀HNO3或水从柱上洗脱吸附的锶，并通过液体闪烁计数。本文描述了一种新的计数方案，该方案允许在分离完成的同一天对89Sr和90Sr进行定量。
