Stable isotope zinc-70 separation method

A separation method and stable technology, applied in the field of separation of stable isotope zinc-70, can solve the problems of low separation efficiency, high operation cost, limited quantity of gaseous zinc salt, etc., and achieve simple device, economical operation cost and cheap price Effect

Inactive Publication Date: 2009-02-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has reached an industrial scale, the operating cost is high, the separation efficiency is low, and the amount of gaseous zinc salt is very limited
This method greatly limits the need for increasing zinc-70 demand as the field of application of stable zinc isotopes expands

Method used

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  • Stable isotope zinc-70 separation method
  • Stable isotope zinc-70 separation method
  • Stable isotope zinc-70 separation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Dissolving benzene-15-crown-5 crown ether solvent with chloroform at normal temperature, preparing 0.2mol / L crown ether solution as the organic liquid film phase;

[0020] 2) Prepare 2.0mol / L ZnCl with a concentration of 0.2mol / L HCl solution 2 solution as the injection phase;

[0021] 3) preparing a concentration of 0.02mol / L HCl solution as the receiving phase;

[0022] 4) Put 50ml of organic liquid film phase B in a U-shaped glass tube, add 10ml of injection phase A to one side of the U-shaped glass tube, add 10ml of receiving phase C to the other side, and insert the positive and negative poles of DC power supply E into In the injection phase and receiving phase on both sides of the U-shaped glass tube, put the U-shaped glass tube in a water bath environment and place it on a magnetic heating stirrer, control the temperature of the water bath at 35 ° C, and perform magnetic stirring at a speed of 150 rpm to accelerate the zinc ions in the Extraction and back ex...

Embodiment 2

[0029] 1) Dissolving benzene-15-crown-5 crown ether solvent with chloroform at normal temperature, preparing 0.1mol / L crown ether solution as the organic liquid film phase;

[0030] 2) With a concentration of 0.1mol / L H 2 SO 4 Solution preparation 1.0mol / L ZnSO 4 solution as the injection phase;

[0031] 3) preparing a concentration of 0.06mol / L HCl solution as the receiving phase;

[0032] 4) Put 50ml of organic liquid film phase B in a U-shaped glass tube, add 10ml of injection phase A to one side of the U-shaped glass tube, add 10ml of receiving phase C to the other side, and insert the positive and negative poles of DC power supply E into In the injection phase and receiving phase on both sides of the U-shaped glass tube, put the U-shaped glass tube in a water bath environment and place it on a magnetic heating stirrer, control the temperature of the water bath at 25 ° C, and perform magnetic stirring at a speed of 100 rpm to accelerate the zinc ions in the Extraction ...

Embodiment 3

[0038] 1) Dissolving benzene-15-crown-5 crown ether solvent with chloroform at normal temperature, preparing 0.3mol / L crown ether solution as the organic liquid film phase;

[0039] 2) Use a concentration of 0.4mol / L HNO 3 Solution preparation 1.5mol / L Zn(NO 3 )2 solution as the injection phase;

[0040] 3) preparing a concentration of 0.1mol / L HCl solution as the receiving phase;

[0041] 4) Put 50ml of organic liquid film phase B in a U-shaped glass tube, add 10ml of injection phase A to one side of the U-shaped glass tube, add 10ml of receiving phase C to the other side, and insert the positive and negative poles of DC power supply E into In the injection phase and receiving phase on both sides of the U-shaped glass tube, put the U-shaped glass tube in a water bath environment and place it on a magnetic heating stirrer, control the temperature of the water bath at 30 ° C, and perform magnetic stirring at a speed of 200 rpm to accelerate the zinc ions in Extraction and ba...

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Abstract

The invention discloses a method for separating stable isotope zinc-70, which comprises the following steps: chloroform is used for dissolving a benzene-15- crown-5 crownether solvent to prepare an organic liquid membrane phase, strong acid is used for preparing a zinc salt solution as an injection phase and an HCl solution is taken as a receiving phase; the organic liquid membrane phase is put into a U-shaped glass tube, one side of the U-shaped glass tube is added with the injection phase and the other side is added with the receiving phase, the two sides of the U-shaped glass tube are inserted into a direct current power source, extraction and stripping operations are carried out in aqueous environment on a magnetic heating agitator, and the heavy stable isotope zinc-70 is collected in the receiving phase. The method takes natural zinc salt as raw material, which is easy to be obtained and is cheap, uses less production auxiliary equipment, and has simple system equipment and safe operation, without the problems such as environmental pollution and the like. The method has rather high separation coefficient and can cause the isotope abundance of accumulation zinc-70 to be 30 percent to 45 percent by one time operation.

Description

technical field [0001] The invention relates to a method for separating stable isotope zinc-70 by using benzene-15-crown-5 crown ether solution as an organic liquid film phase, and belongs to the technical field of stable isotope separation. Background technique [0002] There are five stable isotopes of zinc in nature, their mass numbers are 64, 66, 67, 68, and 70, and their natural abundances are: 48.6%, 27.9%, 4.1%, 18.8%, and 0.62%. in 64 Zn is the common zinc isotope, 66 Zn, 67 Zn, 68 Zn, 70 Zn especially 68 Zn, 70 Zn is a heavy zinc isotope. The five isotopes of zinc have a similar distribution of external electronic structures and a small mass difference. Zinc isotopes can replace each other without affecting the properties of the original substances they constitute. Therefore, heavy zinc isotopes can be widely used as tracer atoms in physics. Chemistry, biology, medicine, environmental science and many other fields. [0003] 70 Zn is an important nuclide in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D59/22B01D61/38
Inventor 丁兴成茹金霞
Owner ZHEJIANG UNIV
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