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Method for producing iodine radioisotopes fraction, in particular of I-131, iodine radioisotopes fraction, in particular of I-131

A technology for radioactive isotopes and fractions, which is applied in the field of preparing iodine radioisotopes, especially fractions of I-131, can solve the problems of interfering with the biomolecular labeling process, contaminating iodine radioisotopes, etc., so as to improve environmental safety, improve purity, and improve selection. sexual effect

Pending Publication Date: 2019-03-01
国家放射性元素研究所
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Problems solved by technology

[0018] This heating leads to the evaporation of nitrates produced by nitric acidification, contaminating iodine radioisotopes, especially gaseous I-131, which is problematic because it interferes with the subsequent labeling process of biomolecules

Method used

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  • Method for producing iodine radioisotopes fraction, in particular of I-131, iodine radioisotopes fraction, in particular of I-131

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Embodiment Construction

[0044] In a first advantageous embodiment of the method according to the invention, the method further comprises acidifying the eluate containing said iodine radioisotope by adding a buffer solution to the thiourea solution, in particular said radioisotope is I-131, in particular, said buffer solution is a phosphoric acid solution with a concentration of 0.5-2 mol / l, preferably 0.8-1.5 mol / l, more preferably about 1 mol / l, and recovers iodine radioisotope salt, especially I-131 salt acidified solution.

[0045] According to the present invention, radioactive isotopes of iodine, particularly iodine-131, are acidified for the purpose of pre-purification and separation from most contaminants, including thiourea, used previously from silver-coated Recovery of iodine from alumina.

[0046] Within the scope of the present invention, the term "resin effluent" is used to describe the mobile phase that passes through the resin and leaves the chromatography column.

[0047] In a prefe...

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Abstract

A method for producing an iodine radioisotopes fraction, comprising the steps of dissolving enriched uranium targets forming a slurry, filtering the slurry, absorbing salts of iodine radioisotopes onan aluminium resin doped with silver and recovering the iodine radioisotopes fraction. The recovery of the iodine radioisotopes fraction, in particular of I-131, comprises washing the aluminium resindoped in silver using a solution of NaOH and eluting of iodine radioisotopes by a solution of thiourea, and collecting an eluate containing the iodine radioisotopes in a theourea solution.

Description

technical field [0001] The present invention relates to a method for preparing iodine radioisotopes, especially fractions of I-131, comprising the following steps: [0002] (i) Alkali dissolution of enriched uranium targets by obtaining an alkaline slurry containing aluminum salts, uranium and isotopes resulting from the fission of enriched uranium, and the gas phase of Xe-133, [0003] (ii) filtering said alkaline slurry to separate, on the one hand, a solid phase containing said uranium, and, on the other hand, an alkaline solution of molybdate and iodine radioisotope salts, [0004] (iii) Adsorbing said iodine radioisotope salt on silver doped alumina resin and recovering the basic molybdate which passes through said silver doped alumina resin and removes iodine radioisotope especially I-131 solution, and [0005] (iv) recovering said fractions of iodine radioisotopes, in particular 1-131. Background technique [0006] This method is well known and described in the lit...

Claims

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Application Information

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IPC IPC(8): G21G1/00
CPCG21G2001/0063G21G1/001G21G1/00
Inventor 多米尼克·穆瓦约瓦莱丽·霍斯特卡罗琳·德坎普
Owner 国家放射性元素研究所
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