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Method for representation of gemstone by virtue of x ray energy dispersion fluorescent spectrometry

A fluorescence spectrometry and x-ray technology is applied in the field of gemstone detection to achieve the effect of a simple detection method

Inactive Publication Date: 2017-06-13
梧州市东麟宝石机械有限公司
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  • Description
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Problems solved by technology

Because traditional tools such as gem microscopes and refractometers identify gemstones by measuring the optical properties and other physical properties of minerals, only qualitative identification results can be made based on these properties and parameters

Method used

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Embodiment 1

[0018] A method for characterizing precious stones by X-ray energy dispersive fluorescence spectrometry, comprising the steps in turn:

[0019] 1) For quantitative analysis of ruby ​​samples, use a stone crusher to grind 350-meter-sized particles, use a pestle and a grinder to grind the samples evenly, and mix these powdery samples with cellulose. By weight, the ratio of cellulose to sample is 1:1;

[0020] 2) under the pressure of 15-2 tons, the mixture is made into a diameter of 2.5 centimeters with a uniform thickness and a thin pellet weighing 350 mg;

[0021] 3) the formula used to calculate the concentration of each element is Ij=I 0 GmjKjCj,

[0022] Where IJ = the intensity of the jth X-ray, I 0 = intensity of excitation source, G = geometry factor, MJ = concentration of jth element, KJ = excitation plus detection factor and CJ = absorption correction factor.

[0023] 4) Using the measured values ​​of ij and CJ and the known values ​​of Kj and MJ from the same Y-ST...

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PUM

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Abstract

The invention discloses a method for representation of a gemstone by virtue of an x ray energy dispersion fluorescent spectrometry and aims at providing a method for identifying the gemstone by virtue of the x ray energy dispersion fluorescent spectrometry with high detection speed and high detection accuracy. The method sequentially comprises the following steps: carrying out quantitative analysis on a ruby sample, grinding particles with the sizes of 350m by adopting a stone crusher, uniformly grinding the sample by adopting a grinding pestle and a mortar, and uniformly mixing the powdery samples with cellulose. Calculated by weight, the ratio of the cellulose to the samples is 1:1, and then the mixture is prepared into thin spherical particles with the diameters of 2.5cm, the weight of 350mg and uniform thickness under the pressure of 15-2 tons; and a formula used for calculating concentration of each element is that Ij=I0GmjKjCj. The invention belongs to the technical field of gemstone detection.

Description

technical field [0001] The invention relates to a method for identifying gemstones, in particular to a method for detecting gemstones by X-ray energy dispersive fluorescence spectroscopy, which belongs to the technical field of gemstone detection. Background technique [0002] With the advancement of gem synthesis technology and optimization treatment technology, the difference between synthetic gems and natural gems is getting smaller and smaller, and the identification is becoming more and more difficult. Identifying these gemstones with traditional gem identification tools can sometimes prove ineffective. Because gem microscopes, refractometers and other traditional tools identify gems and jade by measuring the optical properties and other physical properties of minerals, only qualitative identification results can be made based on these properties and parameters. Moreover, some different types of gemstones have very similar optical and physical properties. Contents of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223
CPCG01N23/223G01N2223/076
Inventor 董志东
Owner 梧州市东麟宝石机械有限公司
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