Method for measuring content of cerium in glass

A glass and content technology, applied in material excitation analysis, thermal excitation analysis, etc., can solve problems such as difficulty, complex composition of cover glass, dissolution, etc., and achieve the effect of small matrix effect, true and reliable detection results, and fast and accurate analysis.

Inactive Publication Date: 2016-06-22
WUHU DONGXU OPTOELECTRONICS EQUIP TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Studies have shown that the composition of the cover glass is complex, and it cannot be dissolved by a single acid, even a mixed acid cannot dissolve it at the same time. It is particularly difficult to detect its low content components using inductively coupled plasma emission spectrometer

Method used

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  • Method for measuring content of cerium in glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] This example is used to illustrate the method for determining the content of cerium in glass according to the present invention.

[0064] (1) Use a glass knife to cut 35g from a flawless, flawless, cleaned and dried glass sample, put it into an agate mortar and grind it into a 3-8μm glass powder, put it in a ziplock bag and mix it evenly.

[0065] (2) Take out 10g of glass powder from the ziplock bag, put it into a washed and dried weighing dish, dry it in an oven at 110°C for 2 hours, put it in a desiccator and cool it to 25°C, and set it aside.

[0066] (3) Accurately weigh 0.1000g of dried glass powder with a precision electronic balance, and place it in a cleaned and dried platinum crucible, then add 9ml of high-grade pure hydrofluoric acid into the platinum crucible, and place the platinum crucible in Heat at 250°C for 25 minutes on a resistance furnace to completely consume high-grade pure hydrofluoric acid, then add 2.5ml of high-grade pure perchloric acid to the...

Embodiment 2

[0092]According to the method of Example 1, the difference is that in step (3), the method for obtaining the complete solution of glass powder is: accurately weigh 0.1000g of dried glass powder with a precision electronic balance, and place it in a cleaned and dried In a dry platinum crucible, add 9.5ml of superior grade pure hydrofluoric acid into the platinum crucible, place the platinum crucible on a resistance furnace and heat it at 220°C for 40min to completely exhaust the superior grade pure hydrofluoric acid, and then add it to the platinum Add 3ml of high-grade pure perchloric acid into the crucible, and heat it on a resistance furnace at 320°C for 60 minutes to completely dissolve the glass powder to obtain a complete solution of the glass powder.

[0093] After measurement, the cerium content of the constant volume solution is 8.13mg / L, and after calculation, the cerium content in the glass sample is 0.4065wt%.

Embodiment 3

[0095] According to the method of Example 1, the difference is that in step (3), the method for obtaining the complete solution of glass powder is: accurately weigh 0.1000g of dried glass powder with a precision electronic balance, and place it in a cleaned and dried dry platinum crucible, then add 10ml of high-grade pure hydrofluoric acid into the platinum crucible, place the platinum crucible on a resistance furnace and heat it at 260°C for 20min to completely exhaust the high-grade pure hydrofluoric acid, and then pour into the platinum crucible Add 3.5ml of high-grade pure perchloric acid to the solution, and heat it on a resistance furnace at 360°C for 40 minutes to completely dissolve the glass powder to obtain a complete solution of the glass powder.

[0096] After measurement, the cerium content of the constant volume solution is 8.14mg / L, and after calculation, the cerium content in the glass sample is 0.407wt%.

[0097] The method for measuring the cerium content in ...

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Abstract

The invention relates to the field of glass processing, and discloses a method for measuring cerium content in glass. The method comprises: (1) grinding the glass to be tested into glass powder, adding hydrofluoric acid to the glass powder for first heat treatment, and then Add perchloric acid to the product obtained by the first heat treatment and carry out the second heat treatment to obtain a complete solution of glass; (2) dilute the complete solution of glass with water to obtain a constant volume solution, and measure the volume of the constant volume solution (3) Determine the cerium content in the glass to be tested according to the volume of the constant volume solution and the measured cerium content. The method for measuring the cerium content in glass of the present invention has the advantages of simple operation, small matrix effect, high precision, high recovery rate of standard addition, low detection limit and high reliability of the result, and can fully meet production requirements.

Description

technical field [0001] The invention relates to the field of glass processing, in particular to a method for measuring cerium content in glass, especially a method for measuring cerium (Ce) content in cover glass. Background technique [0002] Studies have shown that the composition of the cover glass is complex, and it cannot be dissolved by a single acid, even mixed acids cannot dissolve it at the same time. It is particularly difficult to detect its low-content components using inductively coupled plasma emission spectrometer. [0003] Among them, CeO 2 When used in cover glass, it can improve the acid and alkali corrosion resistance of the cover glass, but CeO 2 Excessive amount will also reduce other physical properties of the glass, therefore, it is necessary to quickly and accurately determine the CeO in the glass, especially in the cover glass 2 The content is particularly important for production and helps to ensure the comprehensive physical properties of the cov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 张广涛李俊峰闫冬成王丽红胡恒广
Owner WUHU DONGXU OPTOELECTRONICS EQUIP TECH
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