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Method for determining impurities in glass by using X-ray fluorescence spectrometry

A technology of fluorescence spectroscopy and X-rays, which is applied in the field of measuring impurities in glass by X-ray fluorescence spectroscopy, can solve the problems of insufficient accuracy and precision, achieve accurate results, reduce absorption-enhancement effects, and have low melting points

Inactive Publication Date: 2017-11-21
SUZHOU LANSCI INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] X-ray fluorescence spectroscopic analysis has been widely used in metallurgy, geology, chemical industry, environmental protection, biology and other fields, and is gradually applied to the analysis of glass, but the accuracy and precision of its measurement are not enough

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Preparation of the sample to be tested: Take GBW03115 as the glass fiber standard and 1 g of the glass fiber to be tested respectively, then add 12 g of mixed solvent respectively, the mixed solvent is lithium tetraborate and lithium metaborate with a mass ratio of 35:65, and then Add ammonium iodide with a concentration of 50% dropwise to obtain the standard mixture and the mixture to be tested, and then raise the temperature to 1100°C within 10 minutes, and then melt the standard mixture and the mixture to be tested at 1100°C for 25 minutes to form a standard Glass samples and glass samples to be tested.

[0020] 2) Preparation of standard curve:

[0021] Use the prepared standard glass sample to conduct a condition test on the X-ray fluorescence spectrometer to select the best analysis conditions for the instrument, and perform linear regression according to the linear relationship between the intensity and content to make a calibration curve and save it in the qu...

Embodiment 2

[0025] 1) Preparation of the sample to be tested: Take GBW03115 as the glass fiber standard and 1 g of the glass fiber to be tested respectively, then add 13 g of mixed solvent respectively, the mixed solvent is lithium tetraborate and lithium metaborate with a mass ratio of 35:65, and then Ammonium iodide with a concentration of 50% was added dropwise to obtain a standard mixture and a test mixture, and then the temperature was raised to 1150 ° C within 10 minutes, and then the standard mixture and the test mixture were melted at 1300 ° C for 15 minutes.

[0026] 2) Preparation of standard curve:

[0027] Use the prepared standard glass sample to conduct a condition test on the X-ray fluorescence spectrometer to select the best analysis conditions for the instrument, and perform linear regression according to the linear relationship between the intensity and content to make a calibration curve and save it in the quantitative analysis of the computer in the software.

[0028]...

Embodiment 3

[0031] 1) Preparation of the sample to be tested: Take GBW03115 as the glass fiber standard and 1 g of the glass fiber to be tested respectively, then add 15 g of mixed solvent respectively, the mixed solvent is lithium tetraborate and lithium metaborate with a mass ratio of 35:65, and then Add ammonium iodide with a concentration of 50% dropwise to obtain the standard mixture and the mixture to be tested, and then raise the temperature to 1100°C within 10 minutes, and then melt the standard mixture and the mixture to be tested at 1100°C for 25 minutes to form a standard The glass sample and the glass sample to be tested are cooled and ready for testing.

[0032] 2) Preparation of standard curve:

[0033] Use the prepared standard glass sample to conduct a condition test on the X-ray fluorescence spectrometer to select the best analysis conditions for the instrument, and perform linear regression according to the linear relationship between the intensity and content to make a ...

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Abstract

The invention relates to a method for determining impurities in glass by using X-ray fluorescence spectrometry. The method comprises the following steps: 1) weighing a standard glass fiber and a to-be-determined glass fiber, separately and uniformly mixing the standard glass fiber and the to-be-determined glass fiber with a mixed solvent under stirring, then separately adding ammonium iodide drop by drop so as to obtain two mixtures, heating the two mixtures to 1100 to 1300 DEG C within 10 min, and then subjecting the mixtures to fusing at 1100 to 1300 for 15 to 25 min so as to obtain a standard glass sample sheet and a to-be-determined glass sample sheet, wherein the mixed solvent is composed of lithium tetraborate and lithium metaborate in a mass ratio of 35: 65; and 2) detecting the standard glass sample sheet and the to-be-determined glass sample sheet by using an X-ray fluorescence spectrometer, determining a linear relation between intensity and content, drawing a calibration curve and calculating the content of impurities in glass. The method provided by the invention has high detection sensitivity and good reproducibility.

Description

technical field [0001] The invention relates to a method for measuring impurities in ores, in particular to a method for measuring impurities in glass by X-ray fluorescence spectrometry, and belongs to the technical field of chemical analysis methods in the metallurgical industry. Background technique [0002] The chemical composition of glass fiber is generally analyzed by wet chemical analysis, which has the disadvantages of complicated operation and long analysis time. Using X-ray fluorescence spectrometer to test glass fiber composition, the key is how to solve the problem of standard materials. There are only two glass fiber glass standard materials provided by the country: one for sodium silicate glass and one for borosilicate glass. [0003] X-ray fluorescence spectroscopic analysis has been widely used in metallurgy, geology, chemical industry, environmental protection, biology and other fields, and is gradually applied to the analysis of glass, but the accuracy and ...

Claims

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Application Information

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IPC IPC(8): G01N23/223G01N23/22
CPCG01N23/223G01N23/2202G01N2223/076G01N2223/652
Inventor 杜亚明
Owner SUZHOU LANSCI INSTR
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