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Method for determining boron-10 abundance in boron and compound

A method of determination, technology of boron compounds, applied in the field of chemical detection

Inactive Publication Date: 2017-05-31
CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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  • Description
  • Claims
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However, this method has not been found in the published literature

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  • Method for determining boron-10 abundance in boron and compound

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Embodiment Construction

[0044] The technical solutions of the present invention will be described in detail below in conjunction with specific embodiments. 8.1 Equipment and materials

[0045] The equipment used in the present invention is a thermal ionization isotope mass spectrometer, the auxiliary gas is high-purity nitrogen, and the auxiliary equipment is a filament heating and degassing device (its function is to remove impurities attached to the filament that affect the ionization of the sample), an electric welder (the filament is welded to the carrying filament on the metal bracket); other materials are intermediate brackets, metal tantalum filaments.

[0046] A method for measuring boron-10 abundance in boron and compounds of the present invention comprises the following steps:

[0047] (1) Set up the thermal ionization isotope mass spectrometer

[0048] Set the carrier gas flow rate of the thermal ionization isotope mass spectrometer to 0.1psi, the power gas flow rate to 5.5psi, and the m...

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Abstract

The invention belongs to the technical field of chemical detection methods and in particular relates to a specific method for determining boron-10 abundance in boron and a compound by adopting a thermal ionization isotope mass spectrometry. According to the technical scheme provided by the invention, the method for determining the boron-10 abundance in the boron and the compound by adopting the thermal ionization isotope mass spectrometry is established. A sample application manner of a sample is selected, the concentration of a standard reagent is calibrated, an optimal interval of temperature rising current and optimal time of current temperature rising and the like are determined, so that 3mg of boron carbide powder is enriched and is used as a determination testing material; the precision of the method is better than 0.01 percent. The method is accurate and reliable and the requirements of analytical technique indexes of a project 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 the abundance of boron-10 in boron and compounds by thermal ionization isotope mass spectrometry. Background technique [0002] Generally speaking, boron-10 has strong radiation protection and neutron absorption functions, and has a wide range of uses in nuclear energy, defense industry, medicine and science and technology. In the nuclear industry, boron-10 can be used as a neutron absorber or shielding material for reactors. [0003] With the vigorous development of nuclear power plants, the demand for boron-10 is increasing, and the quality requirements are also getting higher and higher. However, because domestic boron-10 has not been industrialized and the import price is very expensive, most of the domestic boron is currently used in natural boron, and the natural abundance of boron-10 in natural boron is only 1...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
CPCG01N27/626
Inventor 张博涵冯海宁柳永恒
Owner CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND
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