A method for separating and purifying the 90Y of multi-dose from 90 strontium

摘要

(57) Abstract As for this invention, while to designate the abolition physical quantity which it loses and forms and of strontium as minimum, without using the consecutive ⁹⁰ Sr selective extraction chromatography columns, although you use with use of medical care, suitableness the sufficient chemical and it separates and refines multi doses ⁹⁰ Y it regards the method where of radiochemistry purity and. This method, melting the nitrate of the first ⁹⁰ Sr raw materials solutions in H₂ O, draws up the strontium nitrate solution; The aforementioned strontium nitrate solution which contains ⁹⁰ Y, is acidified densely with nitric acid; It evaporates the strontium nitric acid solution; Filtration or centrifugal doing the strontium nitric acid solution, making the skim which separates the crystal of ⁹⁰ Sr nitrates from the solution, enriched it does yttrium; Until the skim which yttrium enriched is done is dried, it evaporates; Nitric acid the skim which the yttrium which is not included enriched is done, is melted in strong acid; This solution, although all yttrium isotopes are almost kept, in addition all trace metals and, it passes to the yttrium selective extraction chromatography kind of column which passes through the impurity, makes the first Sr raw materials solution recycle; The yttrium selective extraction chromatography column remains ⁹⁰ Sr are removed with the inhaling which is strong acid, this is made to recycle to the first ⁹⁰ Sr raw materials solutions; And the yttrium isotope, the fact that from the yttrium selective extraction chromatography column it liquates with strong acid is included.