53 results about "TNT - Trinitrotoluene" patented technology

The invention relates to a high energy insensitive press-fitting high polymer bonded explosive which is prepared from the following components in percentages by weight: 45-75% of main body explosive,5-20% of auxiliary explosive, 15-30% of metal fuel, 1-5% of an adhesive and 1-3% of an insensitive agent, wherein the main body explosive is TKX-50. In order to solve the existing problem that press-fitting PBX is not compatible in power properties and low vulnerability, a high energy insensitive explosive system is introduced. By adding the high energy insensitive main body explosive, the PBX formula has good power properties and low vulnerability. The detonation velocity of the explosive formula is greater than 7500m / s, the explosion heat is greater than 7500J / g, the power is greater than 1.85TNT (2,4,6-trinitrotoluene), and meanwhile, the friction sensitivity of the explosive formula is smaller than 20%, the impact sense is 0, and the explosive can pass examinations of low vulnerabilitytest items such as quick cook-off, slow cook-off and bullet impact.

The invention discloses an SERS (surface-enhanced Raman scattering) substrate comprising a flexible supporting layer and a metal nano-film which is adhered to the flexible supporting layer, wherein the flexible supporting layer is a flexible material with a porous structure, and the metal nano-film is subjected to surface modification treatment. According to a prepared flexible porous SERS substrate for wipe sampling, disclosed by the invention, a surface-enhanced Raman substrate can be used for rapidly detecting organic chemical substances particularly 2,4,6-trinitrotoluene on the surfaces of solid materials.

The invention provides a method for quickly determining the trinitrotoluene or RDX in solution. The trinitrotoluene or RDX is dissolved in acetone to get solution of 10Mu g / mL to 1mg / mL; and then, 1uL to 100uL of such solution, i.e. 10ng to 100ug trinitrotoluene or RDX is fetched and dropped onto the sampling paper; finally, after heating, quantitative detection is available by use of ion mobility spectrometry. Apart from quick and effective, the method of quickly determining the trinitrotoluene or RDX in solution has the advantages of accurate quantification and extensive application, and can quantitatively analyze solid samples.

The invention discloses a valuing method of a 2, 4, 6-trinitrotoluene standard substance. The content of a main component 2, 4, 6-trinitrotoluene in the standard substance is determined by using an internal standard substance with metering traceability based on quantitative 1H NMR technology. The method has the characteristics of simplicity, feasibility, low cost, good stability, high precision, strong specificity and the like, and has the broad application prospects in the aspects of standard substance calibration, intermediate check and the like.

The invention provides a preparation method of zinc oxide nano-particles for fast detecting explosive atmosphere. The method includes two steps that zinc oxide nano-sheets are prepared and the zinc oxide nano-particles are formed in the annealing treatment process. Zinc oxide prepared through a sol-gel method and transition metal doped zinc oxide are of a nano-sheet structure and a nano-particle structure, transition metal doping can change the energy band structure of the nano-sheet structure and the nano-particle structure of the zinc oxide and increase the surface defects of materials, and therefore the gas-sensitive property of the materials is improved. A zinc oxide nano-particle material obtained through the method can sensitively and fast detect the detonable atmosphere with the raw materials being ammonium nitrate, urea and various nitro-explosives such as trinitrotoluene, dinitrotoluene, nitrotoluene, picric acid and cyclonite at room temperature of 25 DEG C in 2-50 seconds, responding is fast, and the detection limit is low.

The present invention relates to a method and utility device for detecting explosives selected from inorganic nitrates like ammonium nitrate (AN), chlorates, nitramines like cyclo trimethylene trinitramine (RDX), Her Majesty's Explosive (HMX), tetryl (CE), nitrate esters like pentaerythritol tetranitrate (PETN), nitro compounds like trinitrotoluene (TNT) plastic explosives like Semtex, TATB and combinations thereof. It also relates to two variants of explosive detection kit viz. a readily portable miniaturized disposable drop type variant and a dispersible spray type variant.

The invention discloses a preparation method of a multifunctional nano composite ball, which belongs to the technical field of detection and application of an aromatic nitryl explosive. The prepared spherical multifunctional nano composite ball is uniform in size, is about 150nm in diameter, has both fluorescence and magnetism, has good selectivity to TNT (Trinitrotoluene), and is a novel nano sensor. The preparation method is based on an improvement of a conventional reported preparation method, and is simpler and easier to operate. The multifunctional nano composite ball is good in dispersibility and stability in water phase. According to the change of the fluorescence intensity of the multifunctional nano composite ball before and after the nano composite ball acts on TNT, the qualitative and quantitative detection on TNT is realized, and the sensitivity is high; and based on the magnetism of the multifunctional nano composite ball, the separation and enrichment are rapider and simpler by magnetic separation, and other aromatic nitryl explosives are effectively separated from the composite ball so as to eliminate interference.

The invention discloses a glass cleaning agent with an antifogging function. The glass cleaning agent is prepared from, by weight, 12-20% of octaphenyl polyoxyethyiene, 2-5% of lauric acid polyoxyethylene ether, 0.3-0.8% of nonylphenol polyoxyethylene ether, 2-3% of dichlorotetrafluoroethane, 0.1-0.3% of trinitrotoluene, 0.1-0.4% of non-ionic surface active agent, 20-30% of antifogging agent, 0.1-0.2% of auxiliary and the balance deionized water. The glass cleaning agent does not contain metal ions, has a good cleaning effect, has the dirt-removing capacity of 98% or above, and does not damage precise glass parts; the glass cleaning agent has the long-acting antifogging function, glass is clean, bright and free of washing after being wiped, it is avoided that fog films are generated by vapor on glass products under temperature differences, and convenience is brought to daily life of people.

The invention provides a novel preparation method of an insensitive explosive TATB. The method comprises the following steps: 1, with 2,4,6-trinitrotoluene as a raw material, subjecting 2,4,6-trinitrotoluene to reacting with hydrogen and acetic anhydride in sequence to obtain 2,4,6-triacetylaminotoluene; 2, subjecting the obtained 2,4,6-triacetylaminotoluene o oxidation and a decarboxylation reaction to obtain 1,3,5-triacetylaminobenzene; and 3, carrying out nitrification and hydrolysis reactions on the obtained 1,3,5-triacetylaminobenzene to obtain 2,4,6-trinitro-1,3,5-triaminobenzene. According to the invention, the raw material used in the preparation method is the cheap 2,4,6-trinitrotoluene, and used reactants or catalysts are commonly used products in the chemical industry, so the preparation method has characteristics of low cost and usage of simple and easily available raw materials. In addition, the preparation method also has the characteristics of short synthesis steps, simple operation of each step, high yield, high reaction rate, easy separation and collection of intermediate and final products and the like, and is beneficial for realization of mass production of TATB.

The invention provides a single-layer fluorene conjugated polymer based on a polydopamine modified inorganic substrate, a preparation method of the single-layer fluorene conjugated polymer and an application of the single-layer fluorene conjugated polymer to detection of aromatic explosives. Polydopamine with nano thickness is self-assembled on the surface of an inorganic substrate such as a silicon chip, glass or quartz, a large quantity of active functional groups are introduced to the substrate surface, and then the modified substrate surface is modified by an iodophenyl functional group; the substrate is placed into a fluorene polymer preparation solution, and the substrate surface is directly modified by the fluorene polymer. By the aid of stable adhesion of the polydopamine layer on the inorganic substrate and rich active functional groups on the surface, the modification density of the fluorene polymer on the surface of the inorganic substrate is improved remarkably. The single-layer fluorene conjugated polymer film material prepared with the method has good detection sensitivity on 1,3,5-TNT (trinitrotoluene), 2,4-DNT (dinitrotoluene) and 1,3,5-trinitrophenol.

The invention provides a glassware cleaning agent for laboratory detection and a preparation method of the glassware cleaning agent. The glassware cleaning agent comprises raw materials in parts by mass as follows: 32-45 parts of dioctylsodium sulfosuccinate, 6-15 parts of sorbitan monolaurate, 5-15 parts of sodium alkyl benzene sulfonate, 68-82 parts of ethylenebis (nitrilodimethylene) tetraphosphonic acid, 5-12 parts of sodium gluconate, 0.1-0.4 parts of trinitrotoluene, 3-5 parts of soap powder, 1-7 parts of borax, 2-8 parts of sodium hydrogen phosphate, 2-8 parts of tetrahydrofuran, 2-6 parts of hydroxypropyl methyl cellulose ether and 750-850 parts of water. The provided cleaning agent has high pertinence, can effectively remove residual chemical substances such as acid, alkali and the like, is rinsed easily and cannot cause secondary pollution.

The present invention provides devices and articles of manufacture comprising a low-voltage operable, highly sensitive, and selectively responsive polymer for the detection of nitroaromatic compounds, including explosives. Resistive devices were fabricated by simple spin-coating on flexible and transparent substrates as well as silicon substrates, and were stable under ambient temperature and oxygen levels before exposure to the nitroaromatics. After exposure to 2,4,6-trinitrotoluene (TNT), the devices showed increased conductance, even with pg quantities of TNT, accompanied by a confirming color change from colorless to deep red. The relative conductance increase per unit exposure is the highest yet reported for TNT. Aromatic anion salts, on the other hand, did not induce any electronic responses. Methods of making the articles and devices, and their use are also provided.

The invention relates to a glass film which is prepared from the following raw materials in parts by weight: 6-9 parts of silane coupling agent, 3-5 parts of hollow glass microsphere, 4-6 parts of methyl fiber, 1-5 parts of film-forming assistant, 6-10 parts of dichlorotetra-fluoroethane, 4-9 parts of trinitrotoluene, 3-6 parts of antimony trioxide, 5-9 parts of methyl methacrylate, 1-5 parts of nicotinic acid, 4-9 parts of ferric orthophosphate, 2-6 parts of starch, 3-9 parts of dodecyl glucoside, 4-8 parts of glycerol, 5-9 parts of 1,4-cyclohexyl dimethanol and 3-5 parts of sodium peroxide. The glass film has favorable effects of heat insulation property and glass selfbursting prevention, and can enhance the appearance rating of the glass.

The invention discloses a promoter 3M1F and applications of the promoter 3M1F. The promoter provided by the invention is named as 3M1F, and is DNA molecules shown by the nucleotide from the 7th site to the 93th site of the 5' terminal in the sequence 1 of the sequence table. The invention also protects the DNA molecules (fusion genes), sequentially comprising the DNA molecules shown by the nucleotide from the 7th site to the 93th site of the 5' terminal in the sequence 1 of the sequence table and reporter genes from the upstream to the downstream. The invention also protects recombinant plasmids containing the fusion DNA. The invention further protects recombinant bacteria obtained by importing the recombinant plasmids into host bacteria. The invention also protects the applications of the recombinant bacteria in detecting 2,4,6-trinitrotoluene and / or 2,6-dinitrotoluene and / or toluene and / or 2,4-dinitrotoluene. A biosensor provided by the invention can be used for detecting and identifying the position of the explosive, such as the mine during the wartime and after the war, and moreover, a novel method is provided for detecting TNT in the soil and the water environment.

The invention provides a preparation method of 2,4,6-toluene triisocyanate, which comprises the steps of 1, under the catalytic action of nitrogen-doped porous carbon supported palladium, taking 2,4,6-trinitrotoluene as a raw material to obtain 2,4,6-triaminotoluene hydrochloride; and 2, taking 2,4,6-triaminotoluene hydrochloride as a raw material, and carrying out phosgenation reaction and reduced pressure distillation to prepare 2,4,6-toluene triisocyanate. The catalyst nitrogen-doped porous carbon loaded palladium adopted by the invention has the characteristics of simple preparation, low palladium loading capacity, efficient catalysis and reusability, and the production cost can be obviously reduced. Each step has the advantages of simple operation, high reaction conversion rate, easyseparation and collection of intermediate and final products, and the like. The preparation method has the advantage of low overall difficulty. Moreover, all intermediate products in the method are high in reaction activity, can be fully reacted, have few by-products, and are more beneficial to realizing high-quality production of 2,4,6-toluene triisocyanate.

The invention provides a method for preparing N, N, N-tripivaloyl-1, 3, 5-benzenetriamine. The method comprises the following steps: step 1, taking 2, 4, 6-trinitrotoluene as a raw material, and reacting the 2, 4, 6-trinitrotoluene with hydrogen and pivaloyl anhydride in sequence to obtain N, N, N-tripivaloyl-2, 4, 6-triaminotoluene; and step 2, carrying out a demethylation reaction on the obtained N, N, N-tripivaloyl-2, 4, 6-triaminotoluene, so as to obtain the N, N, N-tripivaloyl-1, 3, 5-benzenetriamine. In the preparation method, decommissioned 2, 4, 6-trinitrotoluene is adopted, and used reactants or catalysts are common products in the chemical industry, so that the preparation method has the advantages of low cost and simple and easily available raw materials. In addition, the preparation method also has the characteristics of short synthesis steps, simple operation of each step, high yield, fast reaction rate, easy separation and collection of intermediate and final products and the like, and is beneficial to realization of mass production of N, N, N-tripivaloyl-1, 3, 5-benzenetriamine.

The invention discloses a method for detecting p-trinitrotoluene by means of fluorescence sensing. 2,4,6-trinitrotoluene is added to a solution of alkynyl carbazole hyperbranched polymer containing silicon to obtain a solution to be tested , detecting the fluorescence intensity of the solution to be tested, the chemical structural formula of the alkynyl carbazole hyperbranched polymer containing silicon is: the weight average molecular weight of the hyperbranched polymer is 4800-5100 g / mol. The detection method provided by the invention adopts the hyperbranched polymer with higher solubility, and can detect TNT in more organic solvents.

The invention relates to the technical field of explosives and production thereof, and relates to an expanded ammonium nitrate explosive produced by use of trinitrotoluene wastewater and a production method thereof. The expanded ammonium nitrate explosive is produced by the production method shown as follows: the first step, ammonium nitrate, a solvent and an expanding agent are respectively weighed according to the weight ratio of ammonium nitrate: solvent: expanding agent being 100:10:0.15, wherein the solvent is a solution comprising the trinitrotoluene wastewater and purified water according to the weight ratio of trinitrotoluene wastewater: purified water being 20:80-100:0. According to the expanded ammonium nitrate explosive produced by use of the trinitrotoluene wastewater and the production method thereof, the expanded ammonium nitrate explosive is produced by use of the trinitrotoluene wastewater for full or partial replacement of water required for the production of the expanded ammonium nitrate explosive, the trinitrotoluene wastewater is not needed to be treated by complex processes, energy consumed by the treatment of the trinitrotoluene wastewater is saved and the cost is saved, at the same time the limitation of the treatment of the trinitrotoluene wastewater can be avoided, and further, waste materials can be recycled, energy can be saved, and environment can be protected.

The invention discloses a promoter7M4D and an application thereof. The provided promoter is named as 7M4D, and is the DNA molecule shown as 7th to 93rd nucleotide from a 5' tail end of a sequence 1 in a sequence table. The invention also provides the DNA molecule (fusion gene) which comprises the DNA molecule shown as 7th to 93rd nucleotide from a 5' tail end of the sequence 1 in the sequence table and a report gene from upstream to downstream in order. The invention also provides the recombinant plasmid containing the fusion DNA. The invention also protects recombinant bacteria obtained by introducing the recombinant plasmid to a host bacterium. The invention also protects the recombinant bacteria in an application for detecting 2,4,6-trinitrotoluene and / or 2,6-dinitrotoluene and / or toluene and / or 2,4-dinitrotoluene and / or 1,4-dinitro benzene. A biosensor provided in the invention can be used for detection and identification of position of the explosives such as land mine in wartime and after war, and also provides a novel method for detecting TNT in soil and water environment.

The invention discloses a fluorescent material for rapidly detecting explosives and a preparation method of the fluorescent material, and the preparation method comprises the following steps: S1, mixing 1, 8-diaminonaphthalene and derivatives thereof with 1, 3, 5-tri (p-formylphenyl) benzene and derivatives thereof or 1, 3, 5-tri (4-carboxyphenyl) benzene and derivatives thereof in a first solvent, adding sodium pyrosulfite, carrying out a reflux reaction, filtering, washing, and drying to obtain 1, 8-diaminonaphthalene-1, 8-diaminonaphthalene-1, 8-diaminonaphthalene-1, 8-diaminonaphthalene-1, 3, 5-tri (p-formylphenyl) benzene; after the reaction is finished, adding an acid solution to adjust the pH value of the reaction solution to be neutral, filtering, drying and recrystallizing to obtain a prefabricated product; and S2, mixing the prefabricated product with halogenated hydrocarbon in a second solvent, adding an alkali catalyst, stirring, filtering dry weight, and performing heavy crystallization to obtain the fluorescent material. The invention also discloses application of the fluorescent material in detection of explosives. The fluorescent material disclosed by the invention has a good spatial configuration and can be used for detecting various explosives, such as 2, 4, 6-trinitrotoluene, 2, 4-dinitrotoluene, mononitrotoluene, hexogen and plastic explosives.

The invention discloses a promoter recEA4 and applications of the promoter recEA4. The promoter provided by the invention is derived from Escherichia coli K-12 MG1655, is named as recEA4, and is DNA molecules shown by the sequence 1 of the sequence table. The invention also protects the DNA molecules (fusion DNA), sequentially comprising the DNA molecules shown by the sequence 1 of the sequence table and reporter genes from the upstream to the downstream. The invention also protects recombinant plasmids comprising the fusion DNA. The invention further protects recombinant bacteria obtained by importing the recombinant plasmids into host bacteria. The recombinant bacteria are a biosensor for detecting 2,4,6-trinitrotoluene. The biosensor provided by the invention can be used for detecting and identifying the position of the explosive, such as the mine during the wartime and after the war, and moreover, a novel method is provided for detecting TNT in the soil and the water environment.

The invention relates to a brightener for furniture cleaning. The brighter comprises components in parts by mass as follows: 5-18 parts of alkyl sodium sulfonate, 10-28 parts of trinitrotoluene, 5-25 parts of potassium hydroxide, 10-20 parts of lauryl calcium sulfate, 5-15 parts of diacetin, 10-25 parts of oleic acid, 5-10 parts of 2-butoxy ethanol, 3-15 parts of anhydrous sodium metasilicate and 40-80 parts of deionized water. The brightener for furniture cleaning can remarkably remove oil stain and dust on the furniture, cannot leave a mark simultaneously and is high in scrubbing efficiency, time-saving, labor-saving, applicable to cleaning and brightening of all kinds of furniture and convenient to use.

The invention provides a preparation method of insensitive explosive TATB. The method comprises: step 1: using 2,4,6-trinitrotoluene as a raw material, successively reacting with hydrogen and acetic anhydride to obtain 2,4,6-triacetamidotoluene; step 2: converting the obtained 2,4 ,6-triacetamidotoluene is oxidized and decarboxylated to obtain 1,3,5-triacetamidobenzene; step 3: the resulting 1,3,5-triacetamidobenzene is nitrated and hydrolyzed to obtain 2, 4,6‑Trinitro‑1,3,5‑triaminobenzene. Since the raw material used in the preparation method is cheap 2,4,6-trinitrotoluene, and the reactants or catalysts used are common products in the chemical industry, the preparation method has the advantages of low cost and simple raw materials. Easy to get features. In addition, the preparation method also has the characteristics of short synthesis steps, simple operation of each step, high yield, fast reaction rate, and easy separation and collection of intermediate and final products, which is conducive to the realization of mass production of TATB.

The purpose of the present invention is to provide a "fluorescence-stable isotope" dual-mode detection method for p-trinitrotoluene (TNT). The assay consists of a polythymidine‑nucleic acid aptamer probe (AptTNT‑T30) and dual-modality detection with fluorescence detection and stable isotope detection. The principle of the present invention is: the TNT nucleic acid aptamer (AptTNT) sequence can be specifically combined with the target TNT molecule for terminal protection, avoiding exonuclease cutting, and the polythymine sequence (T30) at the 5' end can be used as a template Synthesis of copper nanoparticles. The synthesized copper nanoparticles can be detected in dual modes: in the fluorescence detection mode, rapid fluorescence detection can be performed; after the copper nanoparticles are digested in nitric acid, in the stable isotope detection mode, the inductively coupled plasma mass spectrometer can be used for highly sensitive and stable quantitative analysis , which can respectively satisfy the on-site rapid detection and highly sensitive and accurate detection of TNT.

The invention provides a reagent for rapidly detecting trinitrotoluene, tetront, picric acid, dinitrotoluene and sulfur in explosives. Based on a chemical colorimetric method, the reagent is prepared from an organic probe (E) 2-(3-cyano-4-(4-(dimethylamino) styryl)-5, 5-dimethyl furan-2 (5H)-subunit) malononitrile, a reducing agent sodium borohydride or potassium borohydride and a solvent. And determining whether trinitrotoluene, tetront, picric acid, dinitrotoluene and sulfur exist or not according to different changes of colors after the reaction. The reagent disclosed by the invention can be used for rapidly and qualitatively detecting trinitrotoluene, tetrone, picric acid, dinitrotoluene and sulfur in explosives and residues thereof on site. The method has the characteristics of low cost, simple reaction conditions, easiness in preparation, good reproducibility, high sensitivity and the like.

The invention discloses a high-energy insensitivity energetic compound and a synthesis method thereof. The method comprises the steps 4-nitro-1H-pyrazole-3,5-dicarboxylic acid dimethyl ester is takenas raw material, and an intermediate object is obtained under the catalytic action of metal sodium through a one-pot synthesis method with aminoguanidine hemisulfate salt; the intermediate body is oxidized in an oxidation system to obtain a target product. The method has the advantages that the method is simple, the reaction steps are less, the yield is higher, the separation method is simple, thepractical measuring density of an ultimate product 4-nitro-3,5-bis(1H-1,2,4-triazole-3-nitro)-1H-pyrazole reaches 1.865g cm<3>, the theoretical detonation velocity of the ultimate product predicted by a BKW state equation is 8747m / s, the theoretical detonation pressure is 33.0 GPa, which are close to cyclotrimethylene trinitramine (RDX, detonation velocity:8841 m / s, detonation pressure 34.9 GPa),the testing impacting insensitivity is 30J, which is lower than the RDX (7.4J) and 2, 4, 6-trinitrotoluene TNT (15J), and the compound has wider application prospects in the field of high-energy insensitivity energetic materials.

The invention relates to a high energy insensitive press-fitting high polymer bonded explosive which is prepared from the following components in percentages by weight: 45-75% of main body explosive,5-20% of auxiliary explosive, 15-30% of metal fuel, 1-5% of an adhesive and 1-3% of an insensitive agent, wherein the main body explosive is TKX-50. In order to solve the existing problem that press-fitting PBX is not compatible in power properties and low vulnerability, a high energy insensitive explosive system is introduced. By adding the high energy insensitive main body explosive, the PBX formula has good power properties and low vulnerability. The detonation velocity of the explosive formula is greater than 7500m / s, the explosion heat is greater than 7500J / g, the power is greater than 1.85TNT (2,4,6-trinitrotoluene), and meanwhile, the friction sensitivity of the explosive formula is smaller than 20%, the impact sense is 0, and the explosive can pass examinations of low vulnerabilitytest items such as quick cook-off, slow cook-off and bullet impact.

The invention discloses a low-cost composite fluorescent nano-fiber thin film with high selectivity for detecting TNT as well as the preparation method and the application of the low-cost composite fluorescent nano-fiber thin film, and particularly provides a composite fluorescent nano-fiber thin film, wherein poly (n-isopropylacrylamide) (PNIPAM) is adopted as the matrix of the composite fluorescent nano-fiber thin film and the 9-(pyrenyl-1-yl)-9H-carbazole (PyCz) is adopted as the fluorescent group of the composite fluorescent nano-fiber thin film. The nano-fiber thin film is applied to thefield of explosive detection for the first time. Due to the fact that a large number of amide groups are arranged on a PNIPAM molecular chain, the interaction between hydrogen bond reinforcement and TNT can be formed by virtue of the PNIPAM molecular chain together with TNT. The fiber can be used for identifying 2, 4 and 6-trinitrotoluene (TNT) steam in a low-cost, high-sensitivity and high-selectivity manner. However, the fiber has no obvious response to naphthalene, urea, toluene, 1,2-dichlorobenzene, sodium nitrite, cigarettes and the like.

The invention provides a method for repeatedly detecting 2, 4, 6-trinitrotoluene by using wiping type fluorescent test paper, and the method is used for carrying out fluorescence detection based on the test paper of glutathione modified copper nanoclusters (GSH-CuNC). The prepared fluorescence detection test paper can recover strong orange fluorescence after being soaked in acetonitrile for 1-5 seconds after quenching during wiping detection of 2, 4, 6-trinitrotoluene (TNT), and the fluorescence recovered detection test paper can continuously wipe TNT powder residues on the solid surface to realize rapid detection of repeatable fluorescence quenching. The fluorescence detection test paper can be recycled for multiple times according to the mode, the number of cycles is at least 10 through testing, and the method provided by the invention has the characteristics of simplicity in operation, low price, high visualization degree and the like, and is beneficial to hidden TNT detection in a complex on-site environment. And an effective technical means is provided for the detection of explosive cases of criminal investigation departments of public security systems.