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Rapid detection method for gasoline, diesel, kerosene, and potassium permanganate in explosive

A detection method and technology for explosives, which is applied in the field of detection and analysis of explosives, can solve problems such as poor portability, and achieve the effects of low cost, high accuracy, and short detection time

Active Publication Date: 2020-02-14
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods all need to be realized by special instruments and equipment, and the portability is poor in specific occasions (such as the scene of an explosion)
The portable explosive detection equipment currently on the market generally detects standard explosives, such as TNT (trinitrotoluene), RDX (trimethylene trinitramine), etc., while for non-standard explosives such as gasoline, Diesel, kerosene and potassium permanganate have no significant effect

Method used

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  • Rapid detection method for gasoline, diesel, kerosene, and potassium permanganate in explosive
  • Rapid detection method for gasoline, diesel, kerosene, and potassium permanganate in explosive
  • Rapid detection method for gasoline, diesel, kerosene, and potassium permanganate in explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Prepare detection reagents:

[0022] a. Dissolve diphenylamine with a mass fraction of 5% in a mixed solution of dimethyl sulfoxide and ethanol with a volume ratio of 1:1, add concentrated sulfuric acid with a mass fraction of 50%, and stir until completely dissolved to obtain a detection reagent , packaging the detection reagent in the first reagent bottle 1 in the kit;

[0023] b. Add potassium iodide with a mass fraction of 8% and mercuric chloride with a mass fraction of 2.5% into water respectively, add sodium hydroxide with a mass fraction of 20%, and stir until completely dissolved to obtain a detection reagent, which is encapsulated in the reagent In the second reagent bottle 2 in the box;

[0024] Detection method:

[0025] c. Open the kit, take out the first reagent bottle 1 of the detection reagent in step a and the second reagent bottle 2 of the detection reagent in step b, drop the reagents in the first reagent bottle 1 and the second reagent bottle 2 res...

Embodiment 2

[0027] Prepare detection reagents:

[0028] a. Dissolve benzidine with a mass fraction of 1% in a mixed solution of dimethyl sulfoxide and water with a volume ratio of 1:5, add concentrated sulfuric acid with a mass fraction of 60%, and stir until completely dissolved to obtain a detection reagent , packaging the detection reagent in the first reagent bottle 1 in the kit;

[0029] b. Add potassium iodide with a mass fraction of 5% and mercuric chloride with a mass fraction of 1.5% into water respectively, add potassium hydroxide with a mass fraction of 15%, stir until completely dissolved to obtain a detection reagent, and encapsulate the detection reagent in the reagent In the second reagent bottle 2 in the box;

[0030] Detection method:

[0031] Open the kit, take out the first reagent bottle 1 containing the detection reagent in step a and the second reagent bottle 2 of the detection reagent in step b, drop the reagents in the first reagent bottle 1 and the second reagen...

Embodiment 3

[0033] Prepare detection reagents:

[0034] a. Dissolve diphenylamine with a mass fraction of 0.01% in a mixed solution of dimethyl sulfoxide, ethanol and water with a volume ratio of 1:2:5, add concentrated sulfuric acid with a mass fraction of 65%, and stir until completely dissolved , to obtain the detection reagent, the detection reagent is packaged in the first reagent bottle 1 in the kit;

[0035] B, the potassium iodide that the mass fraction is 1% and the mercuric chloride that the mass fraction is 0.5% are added into water respectively, add the tetrapropyl ammonium hydroxide that the mass fraction is 10%, stir until completely dissolving, obtain detection reagent, will detect reagent Be packaged in the second reagent bottle 2 in the kit;

[0036] Prepare detection reagents:

[0037] c. Open the kit, take out the first reagent bottle 1 of the detection reagent in step a and the second reagent bottle 2 of the detection reagent in step b, drop the reagents in the first...

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Abstract

The invention provides a rapid detection method for gasoline, diesel, kerosene, and potassium permanganate in an explosive. The detection method is based on a chemical colorimetric method, a mixed solution of organic aromatic amine, concentrated acid, dimethyl sulfoxide, alcohol, and water, and a strong alkali solution of potassium iodide and mercury chloride are used as two detection reagents. Acolor changes after a to-be-detected object is in contact with a specific detection reagent, and existence of the gasoline, the diesel, the kerosene, and the potassium permanganate is determined basedon a changed color. The method in the invention can be used for rapid characterization of the gasoline, the diesel, the kerosene, and the potassium permanganate in an explosive raw material, the explosive, and an explosive residue in field explosive search and explosion cases, has features of a simple and rapid operation, strong specificity, a sensitive response, convenient use, and low costs, and can provide an effective technical means for detection and clue analysis of the explosion cases in a criminal investigation department of a public security system.

Description

Technical field [0001] The invention belongs to the field of explosive detection and analysis, and specifically designs a rapid detection method for gasoline, diesel, kerosene and potassium permanganate in explosives. Background technique [0002] Non-standard explosives consist of incendiary and oxidizing agents. Combustion agents include gasoline, diesel, kerosene, etc., and oxidants include potassium permanganate, etc. [0003] Gasoline, diesel, kerosene, etc. are petroleum products and are the fuel for internal combustion engines or kerosene burners. Non-standard explosives ammonium nitrate explosives are made by mixing ammonium nitrate and gasoline. At present, gasoline, diesel and kerosene are often identified through gas / liquid chromatography, mass spectrometry and other methods or through density identification. Potassium permanganate requires elemental analysis to obtain identification results. The above methods all require special instruments and equipment, and ...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N21/29
CPCG01N21/78G01N21/29
Inventor 祖佰祎窦新存
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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