Quantitative analysis method for As element in pyrite by using mineral Raman parameters

Abstract

The invention discloses a quantitative analysis method for As content in pyrite by using mineral Raman parameters. The method comprises the following steps: S1, carrying out pyrite Raman spectrum imaging scanning; S2, carrying out peak-splitting fitting on the Raman image, and making a precise imaging distribution diagram of the sample about the Ag Raman displacement value; S3, measuring a Raman imaging graph of the As content in the same area of the sample; S4, performing Photoshop proofreading and matching on the precise imaging distribution diagram related to the Ag Raman displacement value and the As content Raman imaging diagram, and converting the precise imaging distribution diagram and the As content Raman imaging diagram into a data diagram; and S5, making a scatter diagram of a Cartesian coordinate system through the electronic probe and the Raman imaging data diagram, analyzing the quantitative relation between the Ag Raman shift and the As content in the pyrite, and fitting an equation. According to the method, the As content in the pyrite is quantitatively analyzed by utilizing the mineral Raman parameters, the operation is simple, and the test speed is high. Raman spectrum characteristic signals are strong, the signal-to-noise ratio is high, the specificity is high, the recognition accuracy can be improved, and misrecognition is reduced.

Description

technical field

[0001] The invention relates to a quantitative analysis method for As content in pyrite by using mineral Raman parameters. Background technique

[0002] Pyrite, a common sulfide of iron, is often mistaken for gold because of its light brassy color and bright metallic luster. Pyrite is an important gold-bearing mineral in gold deposits. The determination of As content in pyrite can provide a large amount of gold ore genesis and prospecting information, so it is very important for the rapid determination of As content in pyrite. Value.

[0003] For the determination of As element content in pyrite, at present, it is mainly based on electron probe or laser ablation plasma mass spectrometry analysis, which has the disadvantages of cumbersome preparation work, complicated instrument operation, and damage to samples. Therefore, there is a need for a new technical method that can be characterized quickly and with reliable results. Contents of the invention [0...

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