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Technique for separating boron isotope with boron specific resin ion-exchange chromatography

An isotope and resin technology, which is applied in the field of isotope separation technology, can solve the problems that the strong base system needs to be regenerated and the weak base system has a small separation coefficient, and achieves the effects of high efficiency separation coefficient, fast enrichment speed and high system separation coefficient.

Active Publication Date: 2009-10-21
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a process for separating boron isotopes by boron resin ion exchange chromatography, so as to solve the problem that the weak base system has a small separation coefficient and the strong base system needs to be regenerated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The boron resin of 60 mesh XSC-700 is selected; the reagents are analytically pure hydrochloric acid, boric acid, and sodium hydroxide; the ion exchange column is Glass column, BT00-100M peristaltic pump, Finnigan MAT262 mass spectrometer, CS501 constant temperature water bath.

[0022] The process steps are as follows:

[0023] (1) Preparation of boric acid aqueous solution containing boron isotope: take by weighing 0.61 gram of boric acid solid and dissolve it in pure water, prepare boric acid aqueous solution containing boron isotope concentration as 0.1mol / L, adjust pH value to 5 with hydrochloric acid;

[0024] (2) Chromatographic column preparation: Soak the boron resin with 1mol / L hydrochloric acid solution for 24 hours, wash with deionized water until the pH value reaches 4, and use wet method to pack the column. The aspect ratio of the chromatographic column is not less than 40;

[0025] (3) Resin transformation: Use a peristaltic pump to pass 1mol / L sodium h...

Embodiment 2

[0029] Select 70 purpose chlorine type XSC-700 boron resins for use, reagent, peristaltic pump, mass spectrometer are the same as embodiment 1, and ion exchange column is A glass column with a water jacket, CS501 constant temperature water bath.

[0030] The process steps are as follows:

[0031] (1) Preparation of boric acid aqueous solution containing boron isotope: take by weighing boric acid solids of 1.86 grams and dissolve them in pure water, prepare boric acid aqueous solution containing boron isotope concentration as 0.3mol / L, adjust the pH value to 2 with hydrochloric acid;

[0032] (2) Chromatographic column preparation: Soak the boron resin in 1mol / L hydrochloric acid solution for 24 hours, wash with deionized water until the pH value reaches 4, and use a wet method to pack the column. The aspect ratio of the chromatographic column is not less than 40;

[0033] (3) Resin transformation: use a peristaltic pump to pass 1mol / L hydrochloric acid through the chromatogr...

Embodiment 3

[0037] Select 80 purpose chlorine type XSC-700 boron resins for use, reagent, peristaltic pump, mass spectrometer are the same as embodiment 1, and ion exchange column is A glass column with a water jacket, CS501 constant temperature water bath.

[0038] The process steps are as follows:

[0039] (1) Preparation of boric acid aqueous solution containing boron isotope: take by weighing boric acid solids of 3.09 grams and dissolve them in pure water, prepare boric acid aqueous solution containing boron isotope concentration as 0.5mol / L, and adjust the pH value to 6 with hydrochloric acid;

[0040] (2) Chromatographic column preparation: Soak the boron resin in 1mol / L hydrochloric acid solution for 24 hours, wash with deionized water until the pH value reaches 4, and use a wet method to pack the column. The aspect ratio of the chromatographic column is not less than 40;

[0041] (3) Resin transformation: Use a peristaltic pump to pass 1.0mol / L hydrochloric acid through the chro...

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Abstract

The invention provides a process for separating boron isotope with a boron special-effect resin ion exchange chromatography. The process adopts chelate-typed ion exchanging resin-boron special-effect resin, separates <10>B from boric acid solution, and uses hydrochloric acid or nitric acid as eluent to separate the boron isotope in the boric acid solution by the adsorption of the boric acid on resin columns and the washing of the eluent on the boric acid adsorbed on the resin. According to the process of the invention, the enrichment ratio of the <10>B can be enriched from natural 20 percent or so to 91 percent or so, with fast enrichment speed. The process of the invention is a simple and high-efficiency process which separates the boron isotope from the boric acid solution.

Description

technical field [0001] The invention belongs to isotope separation technology, in particular to a technology for separating boron isotope by ion exchange chromatography. Background technique [0002] boron isotope 10 B has important application value in the fields of nuclear power, nuclear power plants and nuclear medicine. At present, ion exchange chromatography is generally used to separate and enrich 10 b. The method currently has two separation systems: a strong base system and a weak base system. The two systems have their own advantages and disadvantages: the separation coefficient of the strong base system is relatively high, ranging from 1.02 to 1.03, but the system needs to be regenerated with lye, and the process is complicated; the separation coefficient of the weak base system is relatively low, about 1.01, but the system does not need to be regenerated. Simple process. [0003] According to the current publicly reported data, the basic (strong base and weak ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D59/30B01D15/36C01B35/02
Inventor 王美玲刘晓珍付道贵邹从沛王贯春康慨简敏邱军万玉华
Owner NUCLEAR POWER INSTITUTE OF CHINA
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