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Micro infrared reflection spectrum identification method of pearl powder and shell powder

A reflection spectrum and micro-infrared technology, which is applied in the field of identification of pearl powder and shell powder, can solve the problems of outstanding influence on the identification of characteristic peak strength, complicated identification process, and insufficient effect, and achieve non-destructive testing and easy operation The effect of fast and efficient non-destructive testing

Inactive Publication Date: 2013-10-09
CHINESE ACAD OF INSPECTION & QUARANTINE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, the infrared transmission spectrum identification method is commonly used in the identification method of pearl powder and shell powder, but it will use deliquescent potassium bromide sample preparation in the identification process, not only the moisture absorption, the preparation of diluent In addition, the tableting process of the sample also has an impact on the detection of the sample, especially in the identification of the strength of the characteristic peak, which makes the entire identification process complicated and the effect is not significant enough

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  • Micro infrared reflection spectrum identification method of pearl powder and shell powder
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  • Micro infrared reflection spectrum identification method of pearl powder and shell powder

Examples

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Effect test

Embodiment 1

[0037] The microscopic infrared reflection spectrum identification of pearl powder and shell powder comprises the following steps:

[0038] (1) Sample preparation

[0039] (1.1) Prepare pearl powder and shell powder samples. The specific operation is: take 50g of pearls and 50g of mother-of-pearl and wash, crush, and grind them with a ball mill to make samples of pearl powder and shell powder to be identified;

[0040] (1.2) Take 1g each of the pearl powder and shell powder samples obtained in step (1.1) and spread them evenly in a crucible for calcination. The calcination temperature is 400°C and the calcination time is 30 minutes;

[0041] (1.3) Transfer the pearl powder and shell powder samples calcined in step (1.2) to a desiccator respectively, cool to room temperature and then grind;

[0042] (2) Infrared reflection spectrum detection

[0043] Using a Fourier transform micro-infrared spectrometer (Thermo Scientific Nicolet iN10MX), 5 mg of the pearl powder and shell po...

Embodiment 2

[0057] Sampling is carried out the microscopic infrared reflection spectrum identification of pearl powder and shell powder, and basic method and detection condition are the same as embodiment 1, and difference is:

[0058] In step (1.2), take 1g each of the pearl powder and shell powder samples obtained in step (1.1) and spread them evenly in a crucible for calcination. The calcination temperature is 380°C and the calcination time is 30 minutes;

[0059]In the step (2), the sample dosage of the pearl powder and shell powder samples obtained in the step (1.1) and the step (1.3) to be tested by infrared reflectance spectrum is 8 mg.

[0060] Specific test results such as Figure 4 and Figure 5 As shown, the characteristic infrared reflectance spectra of pearl powder and shell powder without calcination treatment at room temperature (RT) and calcination treatment are compared and analyzed, and the analysis method is the same as in Example 1. like Figure 4 and Figure 5 Sho...

Embodiment 3

[0062] Sampling is carried out the microscopic infrared reflection spectrum identification of pearl powder and shell powder, and basic method and detection condition are the same as embodiment 1, and difference is:

[0063] In step (1.2), take 1g each of the pearl powder and shell powder samples obtained in step (1.1) and spread them evenly in a crucible for calcination. The calcination temperature is 390°C and the calcination time is 30 minutes;

[0064] In the step (2), the sample dosage of the pearl powder and shell powder samples obtained in the step (1.1) and the step (1.3) to be tested by infrared reflectance spectrum is 10 mg.

[0065] Specific test results such as Figure 4 and Figure 5 As shown, the characteristic infrared reflectance spectra of pearl powder and shell powder without calcination treatment at room temperature (RT) and calcination treatment are compared and analyzed, and the analysis method is the same as in Example 1. like Figure 4 and Figure 5 S...

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Abstract

The invention relates to a micro infrared reflection spectrum identification method of pearl powder and shell powder. The method comprises the following steps: performing infrared reflection spectrum detection on prepared pearl powder and shell powder samples through using a Fourier transform micro infrared spectrometer, and analyzing and identifying the pearl powder and shell powder samples according to characteristic peak change of the spectrum. Compared with the prior art, the method optimizes the identification procedures of the pearl powder and shell powder, is simple and convenient to operate, effectively avoids the effect caused by additional operations such as sample preparation, and efficiently realizes the nondestructive testing, and the characteristic peak atlas of the obtained pearl powder and shell powder is easier to identify and verify, so that the micro infrared reflection spectrum identification method is suitable for popularization and application in related industrial fields of pearl powder.

Description

technical field [0001] The invention relates to a method for identifying pearl powder and shell powder, in particular to a microscopic infrared reflection spectrum identification method for pearl powder and shell powder. Background technique [0002] Pearls are not only precious decorations, but also precious Chinese medicinal materials, especially for their remarkable efficacy in health care and beauty, and have always been respected by the public. Whether pearls are used for beauty or medicine, they are generally used in powder form. Therefore, the application of pearl powder is highly valued and favored in many industries such as medicine, health food, and beauty cosmetics. In recent years, nano-pearl powder is popular because of its fine texture and easy absorption and efficacy. However, because shell powder and pearl powder are very similar in appearance, composition and structure, and its main component is aragonite-type calcium carbonate, some criminals in the indust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/35
Inventor 席广成张轩闫妍胡超李俊芳杨海峰卢晓静白桦
Owner CHINESE ACAD OF INSPECTION & QUARANTINE
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