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Multipath merge spectrum chemical analysis method and its instrument

A multi-channel spectrometer and analytical instrument technology, applied in the directions of spectrometry/spectrophotometry/monochromator, scientific instruments, instruments, etc., it can solve the problems of inability to test the accuracy and precision of small concentration samples, and achieve savings The effect of sample, detection limit improvement and work efficiency improvement

Inactive Publication Date: 2008-09-10
周志恒
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] One of the purposes of the present invention is to overcome the shortcomings of existing spectral analysis techniques that cannot test small-concentration samples or have poor accuracy and precision when testing small-concentration samples, and provide a multi-channel combined spectrochemical analysis method

Method used

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  • Multipath merge spectrum chemical analysis method and its instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 uses the four-channel combined atomic fluorescence spectrometer that realizes the multi-channel combined spectrochemical analysis method to test the arsenic and tellurium elements in the sample;

[0032] Configure a series of mixed standard solutions of arsenic and tellurium. In accompanying drawing 1, channels A, B and C are filled with the same hollow cathode lamp dedicated to arsenic excitation light source, and channel D in accompanying drawing 1 is equipped with a hollow cathode lamp dedicated to tellurium excitation light source. Through the signal generator 5 in the accompanying drawing 1, control the lamp pulse sequence of the A, B, C, D channels in the accompanying drawing 1 as shown in the accompanying drawing 3, that is, the same arsenic excitation light source of the A, B, C channels in the accompanying drawing 1 The hollow cathode lamp of the hollow cathode lamp irradiates the atomizer 4 in the accompanying drawing 1 at the same time, and the h...

Embodiment 2

[0033] Example 2 uses a four-channel combined atomic fluorescence spectrometer that realizes a multi-channel combined spectrochemical analysis method to measure arsenic and tellurium in a sample;

[0034]Configure a series of mixed standard solutions of arsenic and tellurium. In the accompanying drawing 1, the hollow cathode lamps with the same special-purpose arsenic excitation light source are installed on the channels A and B, and the hollow cathode lamps with the same special-purpose tellurium excitation light source are installed on the C and D channels in the accompanying drawing 1. Through the signal generator 5 in the accompanying drawing 1, control the lamp pulse timing of the A, B, C, D channels in the accompanying drawing 1 as shown in the accompanying drawing 4, that is, the hollow of the dedicated arsenic excitation light source of the A and B channels in the accompanying drawing 1 The cathode lamp irradiates the atomizer 4 in the accompanying drawing 1 at the sam...

Embodiment 3

[0035] Example 3 An ordinary four-channel atomic fluorescence spectrometer is used to test the elements in the sample of Example 1.

[0036] Configure a series of mixed standard solutions of arsenic and tellurium. In accompanying drawing 1, channel A is equipped with a hollow cathode lamp dedicated to arsenic excitation light source; in accompanying drawing 1 channel D is equipped with a hollow cathode lamp dedicated to tellurium excitation light source; in accompanying drawing 1, channels B and C are not equipped with hollow cathodes lamp. Through the signal generator 5 in the accompanying drawing 1, control the lamp pulse timing of the A, B, C, D channels in the accompanying drawing 1 as shown in the accompanying drawing 2, that is, the hollow of the dedicated arsenic excitation light source of the A and D channels in the accompanying drawing 1 The cathode lamp and the hollow cathode lamp of the special tellurium excitation light source successively irradiate the atomizer 4...

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Abstract

This invention provides a multi-channel spectrum-merging chemical analysis method and an instrument, in which, the method includes: same light sources of two or more than two channels radiate a tested sample and test a same element at the same time in a multi-channel spectrometer to get the density data of said element, which is equal to overlap the strength of multiple light sources and increase the radiation strength of single light source so as to strengthen the strength of light sources to increase the sensitivity of the instrument and check-out limit.

Description

technical field [0001] The invention relates to the field of instrument analysis, in particular to a spectral analysis method and an instrument. Background technique [0002] At present, spectroscopic analysis instruments are widely used in the quantitative determination of elements. Spectral analysis instruments are composed of three main parts: excitation light source, atomizer and detector. Atomic fluorescence spectrometer is one of the commonly used spectral analysis instruments. The basic working principle of the whole test process is: each element in the test sample reacts to form the corresponding hydride, mixes with hydrogen and carrier gas, enters the atomizer to achieve atomization, and emits a specific wavelength under the irradiation of the excitation light source Atomic fluorescence signal, the detector collects this fluorescence signal and obtains the concentration data of the element according to the characteristic that the intensity of the fluorescence sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64G01N21/25G01J3/00
Inventor 周志恒
Owner 周志恒
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