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Standard preparation method of optical spectrum

A preparation method and standard technology, applied in the preparation of test samples, material analysis by optical means, measurement devices, etc., can solve the problems of solution transfer, inability to carry out, main body interference, etc., to achieve a wide range of applications, small errors, good stability

Inactive Publication Date: 2010-07-07
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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Problems solved by technology

In this way, the preparation and selection of spectral standards are more complicated and almost impossible to carry out
Using ICP-AES to analyze and encounter the problem of solution transfer, main body interference and atomization of concentrated solution

Method used

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  • Standard preparation method of optical spectrum
  • Standard preparation method of optical spectrum
  • Standard preparation method of optical spectrum

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Embodiment

[0035] Using this method, a standard for spectroscopic analysis of W-Co-Cr alloy powder was prepared for Xianglu Company.

[0036] First, determine the target metal impurity elements to be measured for W-Co-Cr spectral analysis as Si, Mn, Mg, Fe, Ni, Ca, Al, Ti, Mo, and V; then use pure carbon powder as the matrix to transform pure carbon The corresponding oxides of Si, Mn, Mg, Fe, Ni, Ca, Al, Ti, Mo and V are added to the powder to prepare a carbon standard. Calculate the metal impurity elements contained in the carbon standard, and prepare 1wt% (per The main standard point of the content of a metal impurity element) is then diluted with pure carbon powder to 0.05wt%, 0.01wt%, 0.005wt%, 0.001wt% (the content of each metal impurity element) to obtain a Series carbon standard.

[0037] First, weigh 4 parts each of 500mg alloy powder, and mix them with pure carbon powder and carbon standard with impurity content of 0.001wt%, 0.01wt%, 0.05wt%, respectively, and mix them evenly; take ...

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Abstract

The invention relates to a standard preparation method of an optical spectrum, comprising the following steps: (1) taking pure carbon powder as matrix, calculating according to metal impurity elements contained in carbon label, adding corresponding impurity element oxide into the metal impurity elements, preparing one percentage by weight of a prime standard point and then respectively diluting the mention materials by the pure carbon powder to obtain a series of carbon labels; (2) mixing a sample to be analyzed respectively with a series of carbon labels and pure carbon powder in step (1) according to the weight ratio of 1:1 to prepare a set of sample standard and a sample blank; grinding the sample standard and the sample blank and mixing uniformly for spectrograph; measuring blackness S of an analytical line, using S-log C to map a working curve; using a straight line to straightening method for analyzing low-content elements and using a calculation method for estimating relatively high-content impurities. In the invention, a universal standard-the carbon label is employed to obtain a set of standards for sample analysis, which are completely suitable for impurity analysis of daily alloy samples, free from restrictions of sample matrix and need no various chemical technological purification spectrum matrixes; the standards feature good stability and little error of analysis results, thus being simple, convenient and wide in range of application.

Description

Technical field [0001] The invention relates to a new method for preparing spectra standards. Background technique [0002] W-Co-Cr alloy is a new type of alloy, which is characterized by adding moderately volatile metals Co and Cr as the matrix of refractory metal W, and its addition amount will be changed due to needs. In this way, the preparation and selection of spectral standards are more complicated and almost impossible to carry out. The analysis by ICP-AES encountered the problem of solution transfer, main body interference and atomization of concentrated solution. Summary of the invention [0003] The purpose of the present invention is to provide a new spectral standard preparation method, which is mainly used for spectral analysis of impurities in W-Co-Cr alloys. [0004] In order to achieve the above objectives, the present invention adopts the following technical solutions: [0005] A method for preparing a spectrum standard. The method includes the following steps: [...

Claims

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Application Information

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IPC IPC(8): G01N1/28G01N21/17
Inventor 钱伯仁潘元海王长华墨淑敏
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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