Electronic probe quantitative analysis method for testing content of F in natural ore

A quantitative analysis and electronic probe technology, which is applied in the direction of material analysis, measuring devices, and analysis materials using wave/particle radiation, can solve problems such as difficulty in meeting technical requirements and poor accuracy of analysis results, and solve excessive measurement errors , The effect of eliminating interference factors

Inactive Publication Date: 2017-06-13
BEIJING RES INST OF URANIUM GEOLOGY
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Problems solved by technology

[0004] Although technicians generally use electronic probes for quantitative analysis of F elements in the prior art, due to the characteristics of light...

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  • Electronic probe quantitative analysis method for testing content of F in natural ore
  • Electronic probe quantitative analysis method for testing content of F in natural ore

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Embodiment Construction

[0022] The following examples describe in detail an electron probe quantitative analysis method for determining the F content in natural minerals of the present invention.

[0023] A kind of electronic probe quantitative analysis method for measuring F content in natural mineral of the present invention, comprises the following steps:

[0024] Step 1. Sample preparation and carbon plating

[0025] The natural mineral samples are ground into optical thin flakes or optical flake samples suitable for electron probe analysis, and the samples to be tested and the standard samples are sprayed with carbon conductive film at the same time.

[0026] In this embodiment, the standard sample is phlogopite with a F mass ratio of 9.02%.

[0027] In this embodiment, the sputtering thickness of the carbon conductive film is 30 nm. In order to facilitate technicians to grasp the spraying thickness conveniently, the sample to be tested, the standard sample and the brass can be sprayed with a ...

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Abstract

The invention belongs to the technical field of F-element micro-cell in-situ testing, and in particular discloses an electronic probe quantitative analysis method for testing content of F in natural ore. The electronic probe quantitative analysis method comprises the following steps: grinding a natural ore sample into a sample to be tested, and coating the sample to be tested and a standard sample with carbon; checking and confirming F-containing ore to be tested according to an X-ray energy spectrum; sequentially measuring counting strength of the standard sample and counting strength of the F-containing ore to be tested under same quantitative analysis conditions; comparing and analyzing the counting strength of the standard sample and the counting strength of the F-containing ore to be tested, and modifying comparison and analysis results, thereby obtaining the content of the element F. By adopting the electronic probe quantitative analysis method, interference factors in the testing process are eliminated to the maximum extent, optimal electronic probe analysis testing conditions are confirmed, and the purpose of accurately testing the content of the element F in the natural ore in a microcosmic scale is achieved.

Description

technical field [0001] The invention belongs to the technical field of micro-area in-situ testing of F element, and in particular relates to an electronic probe quantitative analysis method for measuring F content in natural minerals. Background technique [0002] Electron probe micro analysis (EPMA for short) is one of the main means to determine the chemical composition of mineral micro-regions, and occupies an irreplaceable position in geological research. Theoretically, this method can determine the elements with atomic number greater than or equal to 3, but the quantitative results are good only for elements with atomic number greater than or equal to 11, and the quantitative results for light elements with atomic number less than 11 are not ideal. Natural minerals generally contain light elements, some elements cannot be quantified by electron probes, such as Be, B elements, etc., and some elements are usually proportioned according to the number of cations, such as C,...

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Application Information

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IPC IPC(8): G01N23/225
CPCG01N23/225
Inventor 葛祥坤艾钰洁范光
Owner BEIJING RES INST OF URANIUM GEOLOGY
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