CN114527084A - Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive - Google Patents

Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive Download PDF

Info

Publication number
CN114527084A
CN114527084A CN202210166281.2A CN202210166281A CN114527084A CN 114527084 A CN114527084 A CN 114527084A CN 202210166281 A CN202210166281 A CN 202210166281A CN 114527084 A CN114527084 A CN 114527084A
Authority
CN
China
Prior art keywords
reagent
sulfur
dinitrotoluene
trinitrotoluene
picric acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210166281.2A
Other languages
Chinese (zh)
Inventor
窦新存
周青春
杨欣怡
蔡珍珍
李毓姝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinjiang Technical Institute of Physics and Chemistry of CAS
Original Assignee
Xinjiang Technical Institute of Physics and Chemistry of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xinjiang Technical Institute of Physics and Chemistry of CAS filed Critical Xinjiang Technical Institute of Physics and Chemistry of CAS
Priority to CN202210166281.2A priority Critical patent/CN114527084A/en
Publication of CN114527084A publication Critical patent/CN114527084A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry

Abstract

The invention provides a reagent for rapidly detecting trinitrotoluene, troxerex, picric acid, dinitrotoluene and sulfur in explosives. The reagent is prepared from an organic probe (E)2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, a reducing agent sodium borohydride or potassium borohydride and a solvent based on a chemical colorimetric method, and whether trinitrotoluene, tetrol, picric acid, dinitrotoluene and sulfur exist or not is determined according to different changes of colors after reaction. The reagent can be used for rapid qualitative detection of trinitrotoluene, troxerex, picric acid, dinitrotoluene and sulfur in explosives and residues thereof on site. The method has the characteristics of low cost, simple reaction condition, easy preparation, good reproducibility, high sensitivity and the like.

Description

Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive
Technical Field
The invention belongs to the field of detection of raw materials of environmental, standard and nonstandard explosives, and relates to a reagent for quickly detecting trinitrotoluene, tetrol, picric acid, dinitrotoluene and sulfur in explosives.
Background
2,4, 6-trinitrotoluene (TNT), Dinitrotoluene (DNT), trolene, and PA are commonly used nitroaromatic explosives. Nitroaromatic explosives are bioaccumulating and highly toxic, their chemical structures are unstable and can adversely affect the ecological environment and public safety (carbon,2017,10: 314-. Improper use can result in release into soil, groundwater, and even food, which can cause anemia, liver damage, cataracts, and cancer (Forensic Science International,2012,222: 340-. The saturated vapor pressure of the nitro-aromatic hydrocarbon explosives under the room temperature condition is relatively low, which causes great difficulty in detection. The use of sulfur in China has a long history, and the invention of gunpowder by sulfur is provided by our ancestors as early as more than a thousand years ago. As the sulfur is widely applied to agricultural production, industry and life, the sulfur comprises sulfur ore, insecticide, oil well, black powder, vulcanized rubber, match head, sulfur soap or paste, has active chemical property, and is combusted or exploded with mixed solution of oxidant. The detection methods of nitroaromatic explosives and sulfur are mainly carried out off-site, and involve complicated instruments, such as gas chromatography (Journal of Chromatographic Science,1998,36: 406-. Most of these techniques are sensitive and efficient, but frequent instrument calibration, lengthy and cumbersome procedures limit their application in field analysis. Liu Yong et al disclose a colorimetric gel paste for detecting explosives, which is prepared from hydrogel, a colorimetric reagent, a humectant and a thickener under the ultraviolet curing condition, has harsh conditions and complex components, and can not detect multiple explosives simultaneously by one paste because different colorimetric reagents are required to be added to prepare corresponding pastes for detecting different explosives. (CN 110849871A)
In the invention, a colorimetric-based detection method provides a detection reagent containing an organic probe and a reducing agent, five substances of trinitrotoluene (TNT), terbutal, Picric Acid (PA), Dinitrotoluene (DNT) and sulfur (S) can be distinguished simultaneously, the reagent is simple to prepare, convenient to operate, rapid, sensitive and high in selectivity, the purpose of detecting various explosives by using one detection reagent can be achieved, and a rapid and effective means is provided for visually detecting the explosives.
Disclosure of Invention
The invention aims to provide a reagent for rapidly detecting trinitrotoluene, terbutaline, picric acid, dinitrotoluene and sulfur in explosives. The reagent is prepared from an organic probe (E)2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, a reducing agent sodium borohydride or potassium borohydride and a solvent based on a chemical colorimetric method, and whether trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur exist is determined according to different changes of colors after reaction. If the substance to be detected contains trinitrotoluene (TNT), the reagent is changed from colorless transparency to ancient pink; if the substance to be detected contains the Cherokee rose, the color of the reagent is changed into the color of the; if the substance to be detected contains Picric Acid (PA), the color of the reagent turns to orange red; if the substance to be detected contains Dinitrotoluene (DNT), the color of the reagent is changed into gentian blue; if the substance to be detected contains sulfur (S), the color of the reagent turns into moss green. The reagent provided by the invention can be used for rapid qualitative detection of TNT, Tetro, PA, DNT and S in explosives and residues thereof in explosion cases, search and elimination sites. The method has the characteristics of low cost, simple reaction condition, easy preparation, good reproducibility, high sensitivity and the like.
The invention relates to a reagent for rapidly detecting trinitrotoluene, terbutaline, picric acid, dinitrotoluene and sulfur in explosives, which is prepared from an organic probe, a reducing agent and a solvent, wherein:
the chemical name of the organic probe is: (E)2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile;
the reducing agent is sodium borohydride or potassium borohydride;
the solvent is N, N-dimethylformamide, dimethyl sulfoxide or ethylene glycol anisole;
the preparation method of the reagent comprises the following steps:
a. dissolving an organic probe (E)2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethyl furan-2 (5H) -ylidene) malononitrile into N, N-dimethylformamide, dimethyl sulfoxide or ethylene glycol anisole serving as a solvent to prepare a probe solution with the concentration of 0.01-5 mu g/mu L;
b. and (b) adding the probe solution obtained in the step (a) into a reducing agent sodium borohydride or potassium borohydride according to the mass ratio of 20:1-5:1, and carrying out ultrasonic treatment for 5-20min to obtain a reagent for rapidly detecting the explosives trinitrotoluene, terbuthylazine, picric acid, dinitrotoluene and sulfur.
The reagent for rapidly detecting trinitrotoluene, terbuthylazine, picric acid, dinitrotoluene and sulfur in explosives is characterized in that a solution is changed from colorless transparency to ancient pink when the trinitrotoluene is detected, the solution is changed into southwestern purple when the terbuthylazine is detected, the solution is changed into orange red when the picric acid is detected, the solution is changed into gentian blue when the dinitrotoluene is detected, and the solution is changed into moss green when the sulfur is detected.
The invention relates to a reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosives, wherein the chemical structure of an organic probe is as follows:
Figure BDA0003516157970000021
the chemical name of the organic probe is as follows: (E)2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, designated DMA-CN;
the prepared detection reagent is applied to the colorimetric detection of trinitrotoluene (TNT), terbuthylar, Picric Acid (PA), Dinitrotoluene (DNT) and sulfur (S), and the specific method is as follows:
(1) weighing 0.0227g of trinitrotoluene (TNT) and dissolving in 10mL of acetonitrile to prepare a trinitrotoluene (TNT) solution with the standard solution concentration of 10 mM; weighing 0.0287g of terbutaline, dissolving in 10mL of acetonitrile, and preparing a standard solution of terbutaline with the concentration of 10 mM; weighing 0.0183g of Picric Acid (PA) and dissolving in 10mL of acetone to prepare a Picric Acid (PA) solution with a standard solution concentration of 8 mM; 0.1821g of Dinitrotoluene (DNT) is weighed and dissolved in 10mL of acetone to prepare a Dinitrotoluene (DNT) solution with the standard solution concentration of 0.1M; weighing 1.6g of sulfur (S) and dissolving in 10mL of toluene to prepare a sulfur (S) solution with the standard solution concentration of 5M;
(2) testing the absorbance change and color change of the reagent before and after the trinitrotoluene (TNT), the terbutaline, the Picric Acid (PA), the Dinitrotoluene (DNT) and the sulfur (S) are added by using an ultraviolet-visible spectrophotometer;
(3) the volume of the detection reagent scanned by ultraviolet-visible absorption spectrum is 3mL, and the volumes of standard TNT, Terylene, PA, DNT and S solutions with different concentrations are respectively added to 20 muL.
The invention relates to a reagent for rapidly detecting trinitrotoluene (TNT), tetrol, picric acid, Dinitrotoluene (DNT) in standard explosives and sulfur (S) in non-standard explosives, which mainly aims at detecting the components of trinitrotoluene (TNT), tetrol, Picric Acid (PA), Dinitrotoluene (DNT) in standard explosives and sulfur (S) in non-standard explosives, solves the problem that the current detection means cannot distinguish the poor stability of trinitrotoluene (TNT), tetrol, Picric Acid (PA), Dinitrotoluene (DNT) and sulfur (S) reagents at the same time, and is green, non-toxic, high-stability, rapid, visual and low in cost.
Compared with the prior art, the invention has the beneficial effects that:
1. the detection reagent can simultaneously realize the detection of trinitrotoluene (TNT), terbutal, Picric Acid (PA), Dinitrotoluene (DNT) and sulfur (S), saves the cost and has high detection efficiency;
2. the detection reagent can sensitively and selectively detect trinitrotoluene (TNT), terbutal, Picric Acid (PA), Dinitrotoluene (DNT) and sulfur (S);
3. the detection reagent disclosed by the invention is quick in reaction, and can realize the identification of trinitrotoluene (TNT), terbutal, Picric Acid (PA), Dinitrotoluene (DNT) and sulfur (S) within 1S;
4. the detection reagent provided by the invention is used for detecting trinitrotoluene (TNT), terbuthylazine, Picric Acid (PA), Dinitrotoluene (DNT) and sulfur (S), does not need complex analysis equipment, and can be directly identified and detected by naked eyes;
5. the detection reagent does not need to carry out any pretreatment on the object to be detected, is simple to operate and is convenient to popularize and apply.
Drawings
FIG. 1 shows the reagent of the present invention (solvent is N, N-Dimethylformamide (DMF), NaBH4Mass ratio of DMA-CN is 10:1) and 10mM TNT, and the insets are photographs of color change of the reagent and TNT before and after reaction;
FIG. 2 shows the reagent of the present invention (solvent is dimethyl sulfoxide, KBH4Mass ratio of DMA-CN is 6:1) and 10mM of Terylene, and the insets are photographs of color change of reagents before and after reaction taken by a camera;
FIG. 3 shows the reagent of the present invention (solvent is N, N-Dimethylformamide (DMF), NaBH4The mass ratio of the reagent to the DMA-CN is 14:1), ultraviolet-visible absorption spectrograms before and after reaction with 8mM picric acid, and the insets are photographs of the color change of the reagent before and after the reaction, which are taken by a camera.
FIG. 4 shows the reagent of the present invention (the solvent is ethylene glycol anisole, KBH)4Mass ratio of DMA-CN is 20:1) and 0.1M DNT, and the insets are photographs of color changes of reagents before and after reaction and taken by a camera;
FIG. 5 shows the reagent of the present invention (solvent is N, N-Dimethylformamide (DMF), NaBH4Mass ratio of DMA-CN is 5:1) and ultraviolet-visible absorption spectrograms before and after reaction with 5M sulfur, and the inset is a picture of color change of the reagent before and after reaction taken by a camera.
Detailed Description
The present invention will be further illustrated by the following specific examples, but the present invention is not limited to these examples.
Example 1
a. Dissolving 10mg of organic probe (E), 2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, in 50mL of N, N-dimethylformamide as a solvent at room temperature to prepare a probe solution with the concentration of 0.2 mu g/mu L;
b. and (b) adding a reducing agent which is 100mg of sodium borohydride into the probe solution obtained in the step a, and performing ultrasonic treatment for 5min to obtain a detection reagent for rapidly detecting the colorless explosives, namely trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur.
Measuring 3mL of detection reagent in a quartz cuvette, adding 20 muL of prepared 10mM trinitrotoluene (TNT) standard solution, performing ultraviolet-visible absorption spectrum scanning by an ultraviolet-visible spectrophotometer, wherein spectrograms before and after trinitrotoluene (TNT) is added are shown in figure 1, and the comparison of the spectrograms before and after reaction shows that an obvious absorption peak appears at 511nm after reaction, directly photographing the reagent before and after reaction (shown in figure 1), and comparing the photos of the reagent before and after reaction shows that the reagent is changed from colorless to paleness pink.
Example 2
a. Dissolving 5mg of organic probe (E), 2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, in 500mL of dimethyl sulfoxide as a solvent at room temperature to prepare a probe solution with the concentration of 0.01 mu g/mu L;
b. and (b) adding 30mg of potassium borohydride serving as a reducing agent into the probe solution obtained in the step a, and performing ultrasonic treatment for 10min to obtain a reagent for rapidly detecting colorless explosives, namely trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur.
Measuring 3mL of detection reagent in a quartz cuvette, adding 20 μ L of prepared 10mM Terra standard solution, performing ultraviolet-visible absorption spectrum scanning by using an ultraviolet-visible spectrophotometer, wherein spectrograms before and after the Terra is added are shown in figure 2, and comparing the spectrograms before and after the reaction to show that an obvious absorption peak appears at a position of 520nm after the reaction, directly photographing the reagent before and after the reaction (shown in an insert picture of figure 2), and comparing the reagent photos before and after the reaction to show that the reagent is changed from colorless to purple in south of Shinan.
Example 3
a. Dissolving 5mg of organic probe (E), 2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, in 50mL of N, N-dimethylformamide as a solvent at room temperature to prepare a probe solution with the concentration of 0.1 mu g/mu L;
b. and (b) adding a reducing agent of 60mg of sodium borohydride into the probe solution obtained in the step a, and performing ultrasonic treatment for 15min to obtain a reagent for rapidly detecting colorless explosives, namely trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur.
Measuring 3mL of detection reagent in a quartz cuvette, adding 20 muL of prepared 8mM picric acid standard solution, performing ultraviolet-visible absorption spectrum scanning by using an ultraviolet-visible spectrophotometer, wherein spectrograms before and after the picric acid is added are shown in figure 3, comparing the spectrograms before and after the reaction, two obvious absorption peaks appear at 420nm and 517nm after the reaction, directly photographing the reagent before and after the reaction (shown in an inset in figure 3), and comparing the reagent photos before and after the reaction to show that the reagent is changed from colorless to orange red after the reaction.
Example 4
a. Dissolving 10mg of organic probe (E), 2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, in 20mL of ethylene glycol anisole serving as a solvent, at room temperature to prepare a probe solution with the concentration of 2 mu g/mu L;
b. and (b) adding 200mg of reducing agent potassium borohydride into the probe solution obtained in the step a according to the mass ratio of 20:1-5:1, and performing ultrasonic treatment for 20min to obtain the reagent for rapidly detecting the explosive trinitrotoluene, the terbuthylazine, the picric acid, the dinitrotoluene and the sulfur.
3mL of the detection reagent was weighed into a quartz cuvette, and 20. mu.L of the prepared 0.1M Dinitrotoluene (DNT) standard solution was added thereto. The ultraviolet-visible spectrophotometer scans the ultraviolet-visible absorption spectrum, the spectrograms before and after adding Dinitrotoluene (DNT) are shown in figure 4, and the spectrograms before and after reaction are compared to show that an obvious absorption peak appears at 592nm after reaction. Direct photographs of the reagents before and after the reaction were taken (as shown in the inset of fig. 4), and the color of the reagents after the reaction changed from colorless to gentian blue by comparing the photographs of the reagents before and after the reaction.
Example 5
a. Dissolving 100mg of organic probe (E), 2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile, in 20mL of N, N-dimethylformamide as a solvent at room temperature to prepare a probe solution with the concentration of 5 mu g/mu L;
b. and (b) adding a reducing agent of 500mg of sodium borohydride into the probe solution obtained in the step a, and performing ultrasonic treatment for 20min to obtain a reagent for rapidly detecting explosives of trinitrotoluene, terbutaline, picric acid, dinitrotoluene and sulfur.
Measuring 3mL of detection reagent in a quartz cuvette, adding 20 mu L of prepared 5M sulfur standard solution, performing ultraviolet-visible absorption spectrum scanning by an ultraviolet-visible spectrophotometer, wherein spectrograms before and after adding sulfur are shown in figure 5, and comparing the spectrograms before and after reaction to show that an obvious absorption peak appears at 619nm after reaction, directly photographing the reagent before and after reaction (shown in an inset in figure 5), and comparing the photographs of the reagent before and after reaction to show that the reagent after reaction is changed from colorless into moss green.
The above embodiments describe the present invention and it will be appreciated that the use of the reagent in TNT, DNT, toddler, picric acid, S detection in other fields is equally applicable without departing from the spirit of the invention. The ratio of the reagent components in the present invention can be adjusted, and such changes are also within the scope of the present invention.

Claims (2)

1. A reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosives is characterized in that the reagent is prepared from an organic probe, a reducing agent and a solvent, wherein:
the chemical name of the organic probe is: (E)2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile;
the reducing agent is sodium borohydride or potassium borohydride;
the solvent is N, N-dimethylformamide, dimethyl sulfoxide or ethylene glycol anisole;
the preparation method of the reagent comprises the following steps:
a. dissolving an organic probe (E)2- (3-cyano-4- (4- (dimethylamino) styryl) -5, 5-dimethylfuran-2 (5H) -ylidene) malononitrile in N, N-dimethylformamide, dimethyl sulfoxide or ethylene glycol anisole to prepare a probe solution with the concentration of 0.01-5 mug/muL;
b. and (b) adding the probe solution obtained in the step (a) into a reducing agent sodium borohydride or potassium borohydride according to the mass ratio of 20:1-5:1, and carrying out ultrasonic treatment for 5-20min to obtain a reagent for rapidly detecting the explosives trinitrotoluene, terbuthylazine, picric acid, dinitrotoluene and sulfur.
2. The reagent of claim 1, wherein the reagent is selected from the group consisting of trinitrotoluene, tetrol, picric acid, dinitrotoluene, and sulfur, wherein the solution changes from colorless and transparent to ancient pink when detecting trinitrotoluene, changes to southwestern purple when detecting tetrol, changes to orange red when detecting picric acid, changes to gentian blue when detecting dinitrotoluene, and changes to moss green when detecting sulfur.
CN202210166281.2A 2022-02-23 2022-02-23 Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive Pending CN114527084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210166281.2A CN114527084A (en) 2022-02-23 2022-02-23 Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210166281.2A CN114527084A (en) 2022-02-23 2022-02-23 Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive

Publications (1)

Publication Number Publication Date
CN114527084A true CN114527084A (en) 2022-05-24

Family

ID=81625364

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210166281.2A Pending CN114527084A (en) 2022-02-23 2022-02-23 Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive

Country Status (1)

Country Link
CN (1) CN114527084A (en)

Similar Documents

Publication Publication Date Title
Erçağ et al. Selective spectrophotometric determination of TNT using a dicyclohexylamine-based colorimetric sensor
Üzer et al. Selective spectrophotometric determination of trinitrotoluene, trinitrophenol, dinitrophenol and mononitrophenol
Taudte et al. A portable explosive detector based on fluorescence quenching of pyrene deposited on coloured wax-printed μPADs
WO2006079167A1 (en) Testing device
CN107607638A (en) The detection method and kit of aromatic compound
WO2013165625A2 (en) Explosives detection polymer comprising functionalized polyamine polymers and methods of using the same
Fouladgar et al. A novel optical chemical sensor for thallium (III) determination using 4-(5-bromo-2-pyridylazo)-5-(diethylamino)-phenol
Sun et al. A new phenothiazine‐based fluorescence sensor for imaging Hg2+ in living cells
Lee et al. A colorimetric and fluorescent chemosensor for detection of Hg2+ using counterion exchange of cationic polydiacetylene
CN106518763B (en) The fluorescence probe and its synthetic method of a kind of optional ratio's formula detection cyanide ion and application
CN101893576A (en) Heavy metal detection test paper and preparation method and application thereof
Üzer et al. Spectrophotometric determination of cyclotrimethylenetrinitramine (RDX) in explosive mixtures and residues with the Berthelot reaction
CN114527084A (en) Reagent for rapidly detecting trinitrotoluene, terbutal, picric acid, dinitrotoluene and sulfur in explosive
CN104655779A (en) Simple and convenient testing method for phenylamine in soil
Sanchez et al. Lewis acid–base interactions enhance explosives sensing in silacycle polymers
Zhang et al. A ratiometric solid AIE sensor for detection of acetone vapor
CN110423609A (en) A kind of fluorescence probe identifying thiocyanate radical and its preparation and recognition methods
Stevanović et al. Colorimetric method for semiquantitative determination of nitroorganics in water
CN210037623U (en) Quick detection device of trace explosive and drugs
Frag et al. Utility of ion-associate formation reactions for the spectrophotometric determination of sildenafil citrate in pure form and in Virecta tablets
Amas et al. The detection of dinitro and trinitro aromatic bodies in industrial blasting explosives
Zhang et al. A Dual Spectroscopic Probe Based on Benzothiazole for Detection of Hydrazine
CN110873713B (en) Method for rapidly detecting sulfur, dinitrotoluene, trinitrotoluene and potassium permanganate in explosive
CN111208096B (en) Method for detecting picric acid by using fluorescent sensor based on BODIPY derivative
Walsh et al. Development of a field screening method for RDX in soil

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination