Method for component separation of plutonium, palladium, silver, cadmium, tin and antimony

A technology of component separation and anion resin column, which is applied in the field of nuclear data measurement, can solve the problems of cumbersome operation of separating plutonium and fission products palladium, silver, cadmium, tin and antimony, achieve good separation effect, improve separation efficiency, and be convenient and complete separation effect

Active Publication Date: 2020-04-14
CHINA INSTITUTE OF ATOMIC ENERGY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing complicated problem of separating plutonium and fission products palladium, silver, cadmium, tin and antimony from the irradiated plutonium target, the present invention provides a combination of plutonium, palladium, silver, cadmium, tin and antimony Separation method

Method used

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Embodiment 1

[0019] The group separation method of plutonium, palladium, silver, cadmium, tin and antimony of the present invention is applied to the group separation of a certain irradiation Pu sample, and its main steps are as follows:

[0020] (1) Add the Ag solution dropwise in concentrated hydrochloric acid, then add the standard solutions of Pd, Cd, Sn and Sb respectively, and adjust the concentration of hydrochloric acid to 7.5mol / L with hydrochloric acid;

[0021] (2) After dissolving the irradiated Pu target wrapped in aluminum foil with 8.7mol / L hydrochloric acid, add the mixed carrier solution and concentrated nitric acid by weight reduction method, heat at 100°C for 10 minutes to promote isotope exchange equilibrium, and obtain Separation of samples;

[0022] (3) Put the HZ201 anion resin column on the sample to be separated; then rinse the HZ201 anion resin column with 7.5mol / L hydrochloric acid, and the gained column effluent and rinse effluent are Ag-containing solution;

...

Embodiment 2

[0032] The group separation method of plutonium, palladium, silver, cadmium, tin and antimony of the present invention is applied to the group separation of a certain irradiation Pu sample, and its main steps are as follows:

[0033] (1) Ag solution is added dropwise in concentrated hydrochloric acid, then respectively add the standard solution of Pd, Cd, Sn and Sb, be 9mol / L with hydrochloric acid adjustment to hydrochloric acid concentration;

[0034] (2) After dissolving the irradiated Pu target wrapped in aluminum foil with 9.5mol / L hydrochloric acid, add the mixed carrier solution and concentrated nitric acid by weight reduction method, heat at 80°C for 15 minutes to promote isotope exchange equilibrium, and obtain Separation of samples;

[0035] (3) put the HZ201 anion resin column on the sample to be separated; then rinse the HZ201 anion resin column with 9mol / L hydrochloric acid, and the gained column effluent and rinse effluent are Ag-containing solution;

[0036] (4...

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Abstract

The invention belongs to the field of nuclear data measurement. In order to solve the problem of complicated operation of an existing separation method, the invention provides a group separation method. The group separation method comprises the following steps: 1, preparing a mixed carrier solution; 2, preparing a sample to be separated; 3, filling into an HZ201 anion resin column, and leaching with 7 to 10mol / L hydrochloric acid, so as to obtain an Ag solution; 4, leaching with 1 to 3mol / L hydrochloric acid, so as to obtain a Pu-containing solution; 5, leaching with concentrated hydrochloricacid to obtain a solution containing Pd and Cd; 6, leaching with 1 to 2mol / L hydrochloric acid and then leaching with 8 to 10mol / L nitric acid; desorbing to obtain an Sn-containing solution; 7, leaching with de-ionized water and then leaching with 0.2 to 1mol / L ammonia water; desorbing to obtain an Sb-containing solution. According to the group separation method, group separation of plutonium, palladium, silver, cadmium, tin and antimony is realized by adopting one HZ201 anion resin column; separation operation is simplified, and the separation efficiency and recycling efficiency are remarkably improved.

Description

technical field [0001] The invention belongs to the field of nuclear data measurement, in particular to a component separation method of plutonium, palladium, silver, cadmium, tin and antimony. Background technique [0002] 239 The fission yield of Pu is a set of very important nuclear parameters, for nuclides in the valley region of the mass distribution curve (such as 109 Pd, 111 Ag, 115 Cd, 125 Sn and 127 The yield measurement of Sb) usually adopts radiochemical method. Since the yield of nuclides in the valley area is very low, generally about a few ten thousandths, the measurement is easily interfered by other high-yield nuclides. Therefore, in order to obtain as much data as possible from one experiment, it is necessary to establish a measurement system for palladium and silver. , cadmium, tin and antimony have high recovery rate and high decontamination factor component separation method. [0003] At present, the precipitation method is mainly used to separate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/42C22B3/06C22B60/04C22B7/00C22B11/00C22B17/00C22B25/06C22B30/02
CPCC22B3/06C22B3/42C22B7/007C22B11/046C22B17/04C22B25/04C22B25/06C22B30/02C22B60/04Y02P10/20
Inventor 余振华王秀凤丁有钱杨志红毛国淑宋志君
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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