Coexistent element intensity based method for analyzing concentrations of mutual interference elements in sample

A technology of coexisting elements and element concentrations, applied in the field of spectral analysis, can solve the problems of mutual interference between spectral lines of elements that cannot be analyzed, errors, and problems such as mutual interference of coexisting elements that cannot be solved

Inactive Publication Date: 2015-01-21
TIANJIN SULUN TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the actual analysis, the calculation of the model may cause further errors, and sometimes even cause out of control
[0026] 2. These models cannot solve the problem of mutual interference between coexisting elements. Using this model when encountering elements with mutual interference may cause greater errors
[0027] 3. These models cannot analyze the mutual interference between the spectral lines of elements with similar wavelengths, and the analysis accuracy is poor

Method used

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  • Coexistent element intensity based method for analyzing concentrations of mutual interference elements in sample
  • Coexistent element intensity based method for analyzing concentrations of mutual interference elements in sample
  • Coexistent element intensity based method for analyzing concentrations of mutual interference elements in sample

Examples

Experimental program
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Effect test

Embodiment 1

[0091] This example is the analysis result of low-alloy steel analyzed on the BAIRD DV6 spectrometer in the United States. The data processor is a DELL-OPTIPLEX 330 computer, the excitation light source is HR400, and the measurement and control system is MC20.

[0092] 1. Calculate the net strength coefficient k 0

[0093] The standard samples of this example are: GBW01211, GBW01212, GBW01213, GBW01214, GBW01215 and GBW01216. Calculate the net strength coefficient k according to formula 3 0 See Table 1:

[0094] the element

[0095] Table 1: Correspondence table of elements and net strength coefficients

[0096] 2. Calculate the mutual interference coefficient

[0097] Through the standard sample, calculate the mutual interference coefficient, see Table 2:

[0098] the element

[0099] Table 2: Table of Interference Coefficients of Elements

[0100] 3. Actual calculation

[0101] According to the coefficients in Table 1 and Table 2 above, analyze the...

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Abstract

The invention provides a coexistent element intensity based method for analyzing concentrations of mutual interference elements in a sample. The method is applied in an analysis system of the atomic emission spectroscopy, and comprises the following steps: building a model which is shown in the description according to the interference relationship of the coexistent elements, wherein n is the number of the elements in a sample to be analyzed, ki0 represents the net intensity coefficient of an ith analytical element in the sample to be analyzed, kij represents the interference coefficient of a jth interference element on the ith analytical element in the sample to be analyzed, and Ci represents the real concentration of the ith analytical element in the sample to be analyzed; calculating the real concentrations of the coexistent elements in the sample through the model. The method has the characteristics of being wide in the element testing range, high in accuracy, good in precision, capable of measuring a plurality of interference elements simultaneously, high in analysis speed and the like, and can be used as an artificial intelligent system capable of replacing experts for analysis.

Description

technical field [0001] The invention belongs to the technical field of spectral analysis, and in particular relates to a method for analyzing the concentration of elements in a sample by using spectral analysis. Background technique [0002] Spectral interference refers to the effect of systematic errors in the analysis results caused by the presence of accompanying substances in atomic emission spectrometry. Accompanying substances refer to all other components present in the sample except the analyte elements, and the accompanying substances that cause interference become interfering substances. Interference effects are one of the most complex issues in atomic emission spectroscopy. [0003] Spectral interference is the interference caused by the indistinguishability between the analysis element signal (analysis signal) and the radiation signal (interference signal) of the interfering substance. Spectral interference is divided into background interference and spectral l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/62
Inventor 马增
Owner TIANJIN SULUN TECH
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