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A sort of 63 Ni activity concentration measurement method

A technology for concentration measurement and activity, applied in measuring devices, material excitation analysis, instruments, etc., can solve problems such as unfriendly environment, low measurement accuracy, and incomplete measurement indicators, so as to avoid β-ray interference and improve measurement High precision, low interference effect

Active Publication Date: 2020-09-29
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide a 63 The Ni activity concentration measurement method solves the problems of low measurement accuracy, unfriendly environment and incomplete measurement indicators caused by the existing liquid scintillation counter method

Method used

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  • A sort of <sup>63</sup> Ni activity concentration measurement method
  • A sort of <sup>63</sup> Ni activity concentration measurement method
  • A sort of <sup>63</sup> Ni activity concentration measurement method

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Embodiment

[0056] A sort of 63 Ni activity concentration measurement method, comprises the following steps:

[0057] 1), the sample Y1 to be tested is prepared into sample Y2 and sample Y3 respectively, the preparation requirements of sample Y2 are: a nitric acid system with a volume ratio of 2%, no Tyndall phenomenon occurs, and the mass concentration of nickel is controlled at 1mg by dilution or concentration / L, the dilution or concentration factor is d; the preparation requirements of sample Y3 are: a nitric acid system with a volume ratio of 2%, the isobaric interference of nickel isotopes 18MΩ.cm;

[0058] 2), adopt atomic emission spectrometry to measure the nickel mass concentration in the sample Y2, concrete steps are:

[0059] a1), preparation of nickel standard solutions B1, B2, B3, B4 and B5: the nickel standard is the natural nickel spectrum standard solution of 1000mg / L, and the standard solution is diluted to prepare mass concentrations of 0.5mg / L and 1mg / L respectively ...

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Abstract

The invention discloses a 63 The Ni activity concentration measuring method comprises the following steps: 1), preparing sample Y1 to be tested into sample Y2 and sample Y3 respectively; 2), adopting atomic emission spectrometry to measure the nickel mass concentration in sample Y2: 3), adopting inductance Measure the nickel isotope abundance ratio of sample Y3 by coupled plasma mass spectrometry: 4), calculate the nickel mass concentration C' and nickel isotope abundance ratio R' of the sample Y1 to be tested i8 , Ni isotopic abundance N i , N 8 , 63 Ni mass concentration C 3 , 63 Ni activity concentration A 3 , The invention solves the problems of low measurement accuracy, unfriendly environment and incomplete measurement indicators caused by the existing liquid scintillation counter method.

Description

technical field [0001] The invention relates to the technical field of radionuclide measurement, in particular to a 63 Ni activity concentration measurement method. Background technique [0002] 63 Ni has a half-life of 101.2 years and can produce 100% pure β-rays, E β The maximum is 66.9KeV. 63 Ni is currently the most widely used low-energy β-radiation source in the world. It is the key raw material for the development of radiant volt effect isotope batteries, which can provide stable energy for devices in special environments such as space and deep sea. also, 63 Ni, as a product of neutron activation, widely exists in reactor components (such as stainless steel, graphite, concrete, lead, and aluminum alloy), and is one of the key nuclides in the investigation of decommissioning source items in nuclear facilities. Therefore, to accurately measure 63 Ni activity is of great significance. [0003] because 63 Ni is a low-energy β radiator, and the emitted β particles ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/62G01N21/62
CPCG01N21/62G01N27/62
Inventor 梁帮宏苏冬萍张劲松陈云明李兵孙鹏李顺涛李子彦周春林李新政钟军
Owner NUCLEAR POWER INSTITUTE OF CHINA
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