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Preparation and value setting method for calibration sample used for X-ray fluorescence analysis calibration

A technique for fluorescence analysis and calibration of samples, which is used in material analysis, analysis of materials, and measurement devices using wave/particle radiation.

Active Publication Date: 2014-02-12
CHINA TEST & CERTIFICATION INT GRP CO LTD
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Problems solved by technology

At present, the calibration samples used in X-ray fluorescence analysis generally select appropriate samples, and use chemical analysis methods or other analysis methods to measure the actual values. Since the calibration samples are actual samples, the content of each component, the number of samples and each component cannot be adjusted. The range of chemical composition is difficult to control, especially the accuracy of the value determination results is closely related to the level of chemical analysis technology in the laboratory. When there is no chemical analysis laboratory and related technical personnel, it is impossible to prepare and value calibration samples

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  • Preparation and value setting method for calibration sample used for X-ray fluorescence analysis calibration
  • Preparation and value setting method for calibration sample used for X-ray fluorescence analysis calibration
  • Preparation and value setting method for calibration sample used for X-ray fluorescence analysis calibration

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Embodiment Construction

[0030] The invention provides a method for preparing a calibration sample by using an actual sample received by a laboratory as a matrix by adding a reference reagent.

[0031] The method is implemented like this:

[0032] Select a sample S for daily analysis, and prepare S into a uniform powder sample;

[0033] According to the chemical composition of the sample S, prepare corresponding pure reference chemical substances (reference reagents) or related chemical reagents to replace the pure reagents (replacement reagents). For example, for cement samples, the chemical composition is silicon dioxide, aluminum oxide, 11 kinds of compositions such as ferric oxide, calcium oxide, magnesium oxide, sulfur trioxide, potassium oxide, sodium oxide, titanium dioxide, manganese oxide and phosphorus pentoxide, then should prepare 11 kinds of reference reagents or substitute reagents such as silicon dioxide, Since chemical components such as calcium oxide and potassium oxide do not have h...

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Abstract

The invention relates to a preparation and value setting method for a calibration sample used for X-ray fluorescence analysis calibration. An actual sample received by a laboratory is adopted as the matrix, and a reference reagent (or substitute reagent) is mixed to prepare the calibration sample. The number of the calibration sample and the mass fraction range of each component can be arbitrarily controlled. The value setting of the calibration sample is totally completed by an X-ray fluorescence analyzer, no chemical analysis is needed, and the laboratory equipped with the X-ray fluorescence analyzer can prepare the calibration sample on its own without a chemical analysis laboratory and assistance of related technical staff.

Description

technical field [0001] The invention relates to the preparation of calibration samples, in particular to the preparation method and value determination technology of calibration samples used in X-ray fluorescence analysis. Background technique [0002] In the instrumental analysis of samples, it is usually necessary to test the calibration samples whose content has been determined first and make a standard curve, and then test the samples to obtain the content of the components to be measured in the samples from the standard curve. At present, the calibration samples used in X-ray fluorescence analysis generally select appropriate samples, and use chemical analysis methods or other analysis methods to measure the actual values. Since the calibration samples are actual samples, the content of each component, the number of samples and each component cannot be adjusted. The range of chemical composition is difficult to control, especially the accuracy of the determination resul...

Claims

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Application Information

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IPC IPC(8): G01N23/223
Inventor 马振珠刘玉兵戴平韩蔚王忠文赵鹰立张亚珍闫冉
Owner CHINA TEST & CERTIFICATION INT GRP CO LTD
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