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Method for rapidly analyzing content of hexogen in mixed explosive

A technology for mixed explosives and rapid analysis, which is applied in the field of explosives detection and quantitative analysis of near-infrared spectroscopy. It can solve the problems of using solvents, not being environmentally friendly, and long cycles, and achieve the effect of ensuring accuracy and precision and reducing labor costs.

Inactive Publication Date: 2015-08-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the commonly used solvent elution method uses solvents, is not environmentally friendly, and has a long cycle and high cost, and the existing rapid and nondestructive detection methods cannot meet the detection of RDX content in mixed explosives. A Rapid Analytical Method for RDX in Mixed Explosives

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  • Method for rapidly analyzing content of hexogen in mixed explosive
  • Method for rapidly analyzing content of hexogen in mixed explosive
  • Method for rapidly analyzing content of hexogen in mixed explosive

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Embodiment 1

[0022] The specific implementation of the technical solution is as follows.

[0023] 1. Preparation and collection of samples with RDX content in a certain range

[0024] A total of 159 batches of samples were prepared and collected, including 68 batches of samples collected on the production line, and 91 batches of samples with mass fractions ranging from 50.24% to 60.0% were designed and manufactured. When designing these sample concentration profiles, strong linear correlations between components should be avoided to avoid loading erroneous linear information into the linear model.

[0025] 2. Collect sample spectrum

[0026] Spectra were acquired for all 159 batch samples with a resolution of 8 cm -1 , the number of scans is 32 times.

[0027] Repeat the spectrum collection for each sample three times. After each sample is collected, place the corresponding three spectra in the same coordinate system and observe whether there is a big difference between the three spectr...

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Abstract

The invention relates to a method for rapidly analyzing the content of hexogen in a mixed explosive, and belongs to the technical filed of explosive detection and near infrared spectroscopy quantitative analysis. The method comprises the following steps: collecting and preparing samples in a certain concentration range, adopting a chemical technology measurement concentration as a reference value, acquiring the spectra of all the samples, establishing various models through combination of different wavebands, different pretreatment technologies and a bias least squares technology, and determining an optimal model according to the ideal degree of a cross check root mean square error (RMSECV) and an RMSECV / dimension curve. The wavebands of the optimal model are 9195.1-7802.8cm<-1>, 7660-6842.4cm<-1> and 6159.7-5403.7cm<-1>, and a pretreatment mode is first order derivative + multiplicative scatter correction. The accuracy and the precision of the method are confirmed by assessing the models. The method can be used for rapidly analyzing the content of hexogen in a mixed explosive.

Description

technical field [0001] The invention relates to a rapid analysis method for the content of RDX in mixed explosives, and belongs to the technical fields of explosive detection and near-infrared spectrum quantitative analysis. Background technique [0002] As a medicine, RDX was first synthesized by Henning in 1899. In 1922, Von Herz discovered that it was a valuable explosive, and it was put into production in the 1930s. Today, RDX is a very widely used explosive. For the analysis of RDX in mixed explosives, the solvent elution method is currently used for routine analysis. This method requires two technicians to cooperate to analyze a sample, which takes 4 hours. [0003] The near-infrared spectrum quantitative analysis technology correlates the sample spectrum with the content of the sample components using mathematical methods, establishes a mathematical model, and then collects the sample spectrum, and directly obtains the content of the sample components through the mo...

Claims

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Application Information

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IPC IPC(8): G01N21/359
Inventor 苏强李丽洁赵云顾光辉王璐婷董晓燕陈树森
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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