Method for preprocessing black powder and its analogues

An analogue, black powder technology, applied in the field of spectral detection pre-processing, to achieve good processing effect and easy rapid detection

Active Publication Date: 2018-01-26
BEIJING HTNOVA DETECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems described above

Method used

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  • Method for preprocessing black powder and its analogues
  • Method for preprocessing black powder and its analogues
  • Method for preprocessing black powder and its analogues

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Use the treatment solution to treat the black powder of experimental group 1, the treatment solution is 20g of aqueous solution, add the black powder into the beaker containing the treatment solution, heat and stir at 50°C for 2min, after fully dissolving, filter while hot to remove the precipitate, and get Sample solution 1 is set aside.

Embodiment 2

[0069] Prepare the treatment liquid, add 1 g of hydrochloric acid solution with a concentration of 2% to the dispersion liquid 19 g of water, acidify the dispersion liquid, and finally add 0.002 g of crown ether 18-crown-6; use the prepared treatment liquid treatment number as experimental group 2 Add the black powder into the beaker filled with the treatment liquid, stir and shake for 5 minutes, fully dissolve, remove the precipitate after centrifugation, and obtain sample solution 2 for later use.

Embodiment 3～8

[0071] Examples 3-8 Refer to the preparation process of Examples 1 and 2 to prepare corresponding sample solutions 1-8 for future use. Among them, during the mixing process of the treatment liquid and the black powder, one or more methods of stirring, shaking, ultrasonication, and heating can be selected, and the process of slag removal can be selected by filtration or centrifugation, and those skilled in the art can choose to use it according to the actual situation. . Generally, sonication and heating can accelerate the dissolution.

[0072] The treatment liquid quality that embodiment 1~8 uses is 20g, but the component of each treatment liquid and content change to some extent, and concrete embodiment situation is as shown in table 1:

[0073] Treatment liquid components and content list thereof in different embodiments of table 1

[0074]

[0075]

[0076] It should be noted that the values ​​in the brackets in Table 1 are the corresponding mass percentages of the ...

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Abstract

The invention discloses a method for preprocessing black powder and its analogues. The method comprises the following steps: processing the black powder and its analogues by using a treatment liquid to obtain a sample solution, and carrying out laser excitation spectroscopy detection on the sample solution to obtain the component detection result of the black powder and its analogues, wherein thesample solution can be used directly, after being concentrated, or after being dropwise added to a test strip and removing a solvent. The method solves the inflammable problem of the black powder andits analogues, greatly enhances the laser excitation spectrum signal of the black powder, makes safe and rapid detection of the black powder possible, allows the range of detected components to be wide, and provides convenience for the checking and identifying work of dangerous substances.

Description

technical field [0001] The invention relates to a pretreatment method for spectral detection, in particular to a pretreatment method for black powder and its analogues. Background technique [0002] At present, the application of laser excitation spectroscopy to the detection of dark substances has always been a difficult problem in the industry, especially for the detection of dark flammable substances. The main reason for this technical problem is that when the laser irradiates dark substances, it is easier to absorb heat, and the heat is not easy to dissipate in time after absorbing heat, which is easy to cause heat accumulation, especially for dark flammable substances such as black powder. When the laser excitation spectroscopy technology is directly tested, there is a danger of burning or even explosion. [0003] On the other hand, black powder and its analogues are multi-substance mixed samples, and most of the substances are black flammable substances. Only a small ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/38
Inventor 粟勇袁丁蒋剑汪强吴红彦
Owner BEIJING HTNOVA DETECTION TECH CO LTD
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