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A Rapid Method for Determination of Uranium Isotope Composition on α Disc

A rapid determination and isotope technology, applied in the field of quantitative analysis of uranium isotope abundance, can solve the problems of influence on measurement results, long measurement time, inaccurate measurement, etc., and achieve easy enrichment and storage, short measurement time, simple and fast method Effect

Active Publication Date: 2020-02-07
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of inaccurate measurement or long measurement time in the above-mentioned prior art, and the measurement results are affected by the thickness of the sample layer and α activity, the present invention aims to provide a method for rapidly determining the composition of uranium isotopes on α discs

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  • A Rapid Method for Determination of Uranium Isotope Composition on α Disc
  • A Rapid Method for Determination of Uranium Isotope Composition on α Disc
  • A Rapid Method for Determination of Uranium Isotope Composition on α Disc

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Embodiment Construction

[0021] Below in conjunction with the drawings, preferred embodiments of the present invention are given and described in detail.

[0022] Experimental instruments, utensils and reagents used in the present invention are as follows:

[0023] Inductively coupled plasma mass spectrometry (ICP-MS), Perkin Elemer NexION 300D; laser ablation solid sampling system (LA), NEW WAVE 213; Milli-Q A10 ultrapure water instrument (Millipore, USA); analytical balance, accurate to 0.1mg; electric heating plate, Labtech Technology Co., Ltd.; EDP9000 electrodeposition instrument, maximum output current of 5A, rotating platinum electrode that can move up and down for positioning and adjustable speed, France SDEC company; stainless steel α disc, surface polished , 19.6mm in diameter and 0.5mm thick.

[0024] 37% HCl: Ultrapure Grade, Suzhou Jingrui Chemical Co., Ltd.; Experimental water: ultrapure water with a resistivity of 18.2MΩ cm produced by Milli-QA10 ultrapure water instrument; 6M HCl: use...

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Abstract

The invention relates to a method for rapid determination of uranium isotope composition on an alpha wafer. The method includes: loading uranium in a solution of a uranium-containing compound to an alpha wafer to obtain a to-be-analyzed sample; loading uranium in a solution of a uranium hexafluoride standard substance to an alpha wafer to obtain a standard sample sheet; optimizing LA and ICP-MS to obtain optimized parameters of the instrument; using the optimized parameters of the instrument to determine the standard sample sheet so as to obtain an uncorrected abundance value of each nuclide, and dividing the uncorrected abundance value by a certificate value of the standard substance to obtain the correction factor of each nuclide abundance; using the optimized parameters of the instrument, and employing line scanning to denude the to-be-analyzed sample for determination, dividing the determined counting ratio abundance value of each nuclide by the correction factor correction mass discrimination effect of each nuclide abundance to obtain the corrected abundance value of each nuclide. The method for rapid determination of the uranium isotope composition on an alpha wafer provided by the invention can accurately determine the abundance value of each nuclide.

Description

technical field [0001] The invention relates to the technical field of quantitative analysis of uranium isotope abundance, and more specifically relates to a method for rapidly determining the composition of uranium isotopes on an alpha disc. Background technique [0002] There are many methods to measure uranium (U) isotope abundance, and there are two commonly used ones: the first is to use mass spectrometry instruments to directly measure liquid solution samples, and the second is to electroplate uranium onto stainless steel α discs using α energy spectrum determination. [0003] For the first method, such as ICP-MS (Inductively Coupled Plasma Mass Spectrometry), Multi-Channel Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS) method, which directly determines the U isotope abundance in solution samples. However, this method generally requires an acidic solution as a medium, and the presence of hydrogen ions in the solution will produce polyatomic mass spectrum int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/71G01N1/28
CPCG01N1/28G01N21/71
Inventor 崔荣荣刘艳成周伟张岚胡伟青丛海霞罗艳
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI