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Determination method of content of zirconium in uranium-zirconium alloy

A method of determination, zirconium alloy technology, applied in the field of determination of zirconium content in uranium-zirconium alloys, can solve the problems of no public reports, no published standards for the determination of zirconium content in uranium-zirconium alloys, etc., and achieve the effect of accurate detection data

Active Publication Date: 2017-05-10
CHINA NORTH NUCLEAR FUEL
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Problems solved by technology

[0002] There is no standard for the determination of zirconium content in uranium-zirconium alloys at home and abroad; GB / T17416 "Methods for Chemical Analysis of Zirconium Ore Part 2: Determination of Zirconium and Hafnium Content" uses X-ray fluorescence spectroscopy to determine the content of zirconium and hafnium; YS / T372. 21-2006 Element analysis method for precious metal alloys Determination of zirconium content EDTA complexometric titration method; For the determination of zirconium content, there are generally gravimetric method and titration method, and there is no public report on the standard of EDTA titration method for the determination of zirconium content in uranium-zirconium alloys at home and abroad

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  • Determination method of content of zirconium in uranium-zirconium alloy
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  • Determination method of content of zirconium in uranium-zirconium alloy

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Embodiment Construction

[0039] The technical solutions of the present invention will be described in detail below in conjunction with specific embodiments.

[0040] A method for measuring zirconium content in uranium-zirconium alloys, comprising the following steps:

[0041] (1) Weigh a portion of uranium-zirconium alloy, the mass ratio of uranium to zirconium is 9:1, and place the sample in a 50mL beaker;

[0042] (2) Add nitrate mixed acid in the 50mL beaker, the proportional relationship between the volume of the nitrate mixed acid and the quality of the uranium-zirconium alloy sample is 25mL / g, cover the watch glass;

[0043] Nitrate mixed acid is a solution that is mixed with 95mL pure nitric acid and 280mL pure hydrochloric acid and diluted with water to a volume of 1000mL;

[0044] (3) Heat the solution in the 50mL beaker to 200°C through a temperature-adjusting electric heating plate, add hydrofluoric acid to dissolve after 10min, and the proportional relationship between the volume of hydro...

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Abstract

The invention belongs to the technical field of a chemical detection method and particularly relates to a specific method for determining the content of zirconium in a uranium-zirconium alloy by adopting an EDTA (Ethylene Diamine Tetraacetic Acid) titration method. The invention establishes a detection method of the content of the zirconium in the uranium-zirconium alloy by adopting the EDTA titration method. By carrying out experiments including selection of a sample dissolving temperature, an adding amount of hydrofluoric acid, an interference experiment of uranium, titration acidity, a titration temperature and the like and taking 0.2g of a uranium-zirconium alloy sample as the standard, the precision density of the method is better than 1%; and the method is accurate and reliable, and index requirements of a project analysis technology are met.

Description

technical field [0001] The invention belongs to the technical field of chemical detection methods, and in particular relates to a specific method for measuring zirconium content in uranium-zirconium alloys by adopting an EDTA (ethylenediaminetetraacetic acid) titration method. Background technique [0002] There is no standard for the determination of zirconium content in uranium-zirconium alloys at home and abroad; GB / T17416 "Methods for Chemical Analysis of Zirconium Ore Part 2: Determination of Zirconium and Hafnium Content" uses X-ray fluorescence spectroscopy to determine the content of zirconium and hafnium; YS / T372. 21-2006 Element analysis method for precious metal alloys Determination of zirconium content EDTA complexometric titration method; For the determination of zirconium content, there are generally gravimetric method and titration method, and there is no public report on the standard of EDTA titration method for the determination of zirconium content in uraniu...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N1/28G01N1/34G01N1/38G01N1/44
CPCG01N1/28G01N1/34G01N1/38G01N1/44G01N21/78
Inventor 张洪伟杨俊莉
Owner CHINA NORTH NUCLEAR FUEL
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