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LIBS metal element quantification method based on different element multi-ion-state comparison and correction

A metal element and ionic state technology, applied in the field of atomic emission spectrometry, can solve the problems of inaccurate quantitative analysis of elements, large measurement errors, etc., and achieve the effect of facilitating promotion and modular application, and improving detection speed and accuracy

Inactive Publication Date: 2013-11-20
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0005] In the published patent document based on laser-induced breakdown spectroscopy measurement technology (application number: 201210244830.X), the real-time detection method is used to realize the direct detection of powder samples, but the quantitative analysis of elements is not accurate enough, which may easily lead to large Therefore, it will be a very effective method to carry out accurate quantitative analysis of metal elements by using the method of comparison and correction of multi-ion states of different elements

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  • LIBS metal element quantification method based on different element multi-ion-state comparison and correction
  • LIBS metal element quantification method based on different element multi-ion-state comparison and correction
  • LIBS metal element quantification method based on different element multi-ion-state comparison and correction

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Embodiment

[0023] Taking the measurement of Ba element content in ore as an example, the LIBS quantitative method of metal elements based on the comparison and correction of multiple ion states of different elements is described.

[0024] 1. According to the qualitative spectrum of the ore to be tested, the Ba element to be measured is set as the target element, and the Cu metal element is set as the reference element, and different metal elements in the ore are used for sample preparation to prepare the content of each metal element in the sample All into a gradient change.

[0025] Table 1. Prepared sample components

[0026]

[0027] Second, take three groups of prepared sample 1, sample 2, and sample 3, and measure their plasma spectra respectively.

[0028] 3. It is known that the content of the target element Ba in the three groups of samples is CT1=2%, CT2=3.3%, CT3=6.6%; the spectral intensities of the three different ion states of the target element Ba in the spectrum of sam...

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Abstract

The invention discloses a laser-induced breakdown spectroscopy (LIBS) metal element quantification method based on different element multi-ion-state comparison and correction. According to the method, qualitative analysis is carried out based on an LIBS spectrum of an ore to be detected; sample preparation is carried out according to the contained different metal element, and the samples are subjected to LIBS spectrum acquisition. The method is mainly used in metal element detection of ore samples. Also, a homomorphic degeneracy weighting algorithm is introduced, such that quantitative analysis of the element to be detected is carried out. Therefore, influences from other elements in the ore are reduced, and detection speed and precision of metal elements in ores are improved. With the method, excessive sample preparation and calculation are not needed. Therefore, the method is suitable for popularization and modular application in ore analysis works.

Description

technical field [0001] The invention relates to a method for quantifying metal elements in ores. Specifically, the invention uses laser-induced breakdown spectroscopy (abbreviated as LIBS) to measure the content of metal elements by comparing and correcting the multi-ion states of different elements, which belongs to atomic emission spectroscopy. The field of measurement technology. Background technique [0002] Laser-induced breakdown spectroscopy is an emerging nondestructive testing technique. Due to its rapidity, non-contact measurement, and no need for sample pretreatment in the detection of sample composition and element content, the LIBS system has been used in cultural relic identification, explosive detection, metal and its alloy detection, material science, biomedicine, etc. , environmental monitoring, combustion and catalytic converter detection, forensic science and other substances and element detection fields are widely used. [0003] However, in the process ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63
Inventor 万雄王鹏张华明
Owner NANCHANG HANGKONG UNIVERSITY