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Sample preparation flux for X-ray fluorescence spectroscopic analysis of evaporite samples

A fluorescence spectrum and evaporite technology, applied in the field of spectrum analysis, can solve the problems of low pass rate, unusable, unformable, etc., and achieve the effect of simple operation and expanding application scope.

Inactive Publication Date: 2015-12-23
洪飞 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although X-ray fluorescence spectrometry is known as a green analysis method because of its simple operation, fast analysis speed, and almost no environmental pollution, it has been rarely used in the analysis and testing of evaporite samples.
First of all, because of its inherent shortcomings (inhomogeneous effect), the powder pressing method makes the measurement results not accurate enough to be used; while the fusion sample preparation method (glass melting method) that can carry out accurate analysis is helpless, and its The reason is the use of conventional fluxes (usually Na 2 B 4 o 7 , Li 2 B 4 o 7 、LiBO 2 etc.) The glass frits produced showed severe fragmentation, the pass rate was very low, and they could not be formed at all, so they could not be analyzed.

Method used

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  • Sample preparation flux for X-ray fluorescence spectroscopic analysis of evaporite samples
  • Sample preparation flux for X-ray fluorescence spectroscopic analysis of evaporite samples
  • Sample preparation flux for X-ray fluorescence spectroscopic analysis of evaporite samples

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 (the mensuration of NaCl, KCl in the sandy rock salt sample)

[0020] Weigh each component of the flux according to the following weight ratio:

[0021] Flux 1: LiBO 2 : 75g; SiO 2 : 10g; Fe 2 o 3 : 8g;

[0022] Flux 2: LiBO 2 : 75g; SiO 2 : 8g; Fe 2 o 3 : 10g;

[0023] Flux 3: LiBO 2 : 75g; SiO 2 : 14g; Fe 2 o 3 : 6g.

[0024] Mix the above three sets of flux components separately and grind them evenly.

[0025] Using the above three groups of fluxes, according to the requirements of "Rock and Mineral Analysis" (standard method of the Ministry of Land and Resources, numbered: DZG20.01), the sandy rock salt samples were prepared by melting respectively, and qualified X-ray fluorescence spectrometers were obtained. Analyzed glass frit, and carried out X-ray fluorescence spectroscopic analysis and measurement to it respectively, the result is as shown in the following table:

[0026]

[0027] Note: The reference value is the average value o...

Embodiment 2

[0028] Embodiment two (the mensuration of NaCl, KCl in rock salt sample)

[0029] Weigh the flux components according to the following weight ratio:

[0030] Flux 1: LiBO 2 : 80g; SiO 2 : 8g; Fe 2 o 3 : 8g; CuO: 4g;

[0031] Flux 2: LiBO 2 : 80g; SiO 2 : 10g; Fe 2 o 3 : 10g; CuO: 5g.

[0032] Flux three (for reference): LiBO 2 : 75g; SiO 2 : 10g; Fe 2 o 3 : 8g.

[0033] Mix the above three groups of flux components and grind them evenly.

[0034] Using flux 1, flux 2, and flux 3, according to the requirements of "Rock and Mineral Analysis" (standard method of the Ministry of Land and Resources, No.: DZG20.01), the rock salt samples were prepared by melting respectively, and qualified X-ray fluorescence Spectrum analysis of the glass frit, and it was carried out by X-ray fluorescence spectrum analysis and measurement, the results are shown in the following table:

[0035]

[0036] Note: The reference value is the average value of the analytical results of ato...

Embodiment 3

[0037] Embodiment three (the mensuration of CaO, MgO in the gypsum sample)

[0038] Weigh the flux components according to the following weight ratio:

[0039] Flux 1: LiBO 2 : 75g; SiO 2 : 9g; Fe 2 o 3 : 7g; Cr 2 o 3 : 4g;

[0040] Flux 2: LiBO 2 : 75g; SiO 2 : 10g; Fe 2 o 3 : 10g; Cr 2 o 3 : 10g.

[0041] Flux three (for reference): LiBO 2 : 75g; SiO 2 : 10g; Fe 2 o 3 : 8g.

[0042] Mix the above three groups of flux components and grind them evenly.

[0043] Using flux 1, flux 2, and flux 3, according to the requirements of "Rock and Mineral Analysis" (standard method of the Ministry of Land and Resources, number: DZG20.01), the gypsum samples were prepared by melting respectively, and qualified X-ray fluorescence Spectrum analysis of the glass frit, and it was carried out by X-ray fluorescence spectrum analysis and measurement, the results are shown in the following table:

[0044]

[0045] Note: The reference value is the average value of the analyt...

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Abstract

The invention discloses a sample preparation flux for X-ray fluorescence spectrum analysis for evaporite samples, which belongs to the field of spectrum analysis. The flux is composed of ingredients in parts by weight: 70-80 parts of LiBO2, 8-15 parts of SiO2, 5-10 parts of Fe2O3 and an appropriate amount of a viscosity regulator. Compared with the prior art, the acidity of the sample preparation flux for X-ray fluorescence spectrum analysis for evaporite samples disclosed by the invention is increased by adding acidic ingredients in a certain ratio, so that a fusion capacity for the evaporite samples mainly comprising alkaline ingredients (such as K, Na, Ca and Mg) can be improved better, and the evaporite samples can be effectively fused and used for preparing qualified glass fuse pieces; and the sample preparation flux for X-ray fluorescence spectrum analysis for the evaporite samples is great in popularization and application values.

Description

technical field [0001] The invention relates to the field of spectroscopic analysis, in particular to a sample preparation flux used for X-ray fluorescence spectroscopic analysis of evaporite samples. Background technique [0002] Evaporite is a chemical sedimentary rock. It is formed by the evaporation and concentration of brine in lake basins and sea basins, and the crystallization of salt substances according to different solubility. The most common salt minerals are Trona, Soda, Glauber's Salt, Glauber's Salt, Glauber's Salt, Saltpeter, Gypsum, Anhydrite, Kobeinite, Halite, Epsom Salt, Polyhalite, Carnallite, and Potassium Salt Wait. The main chemical composition of evaporite is K, Na, Ca, Mg chloride, sulfate, borate and K, Na nitrate, etc. It is an important mineral resource and is widely used in agriculture and industry. [0003] For the analysis and testing of evaporite samples, the commonly used methods are wet chemical analysis, ICP-emission spectroscopy, atomic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28
Inventor 洪飞袁家义姜怀坤
Owner 洪飞