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Method for determining contents of TATB and HMX in explosive wastewater

A determination method and technology for explosive waste water, which can be applied to measurement devices, instruments, scientific instruments, etc., and can solve problems such as accidental explosions, indistinct absorption peaks, and limitations.

Pending Publication Date: 2021-02-05
SHANXI BEIHUA GUANLYU CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] TATB (triaminotrinitrobenzene) is very insensitive to heat, friction and impact, and has good thermal stability and impact sensitivity, but TATB is almost insoluble in organic solvents, which limits its application; HMX (Oktojin) High energy, good thermal stability, but poor sensitivity, prone to accidental detonation due to high temperature, impact and other stimuli, both are widely used in weapons and equipment
Explosive wastewater often contains TATB and HMX at the same time, and the content of these two components must be analyzed in the wastewater recovery process, but the current existing technology only has a detection method for HMX, which uses acetonitrile / methanol / water as the mobile phase , HMX is measured at 230nm, while TATB has no obvious absorption peak at 230nm, the samples cannot be separated, and the resolution R<1.0 has a great impact on the analysis results. Therefore, when using this chromatographic condition to analyze two substances at the same time , there are great difficulties, and there is no method in the current industry that can analyze the content of the two substances at the same time

Method used

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  • Method for determining contents of TATB and HMX in explosive wastewater
  • Method for determining contents of TATB and HMX in explosive wastewater
  • Method for determining contents of TATB and HMX in explosive wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Exclusive experiment:

[0074] Preparation of test solution for standard samples: Weigh 100mg of HMX and 10mg of TATB into a 100mL volumetric flask, add 95mL of acetonitrile, ultrasonically shake at 90W power for 30min, then stand at room temperature for 4h, dilute with acetonitrile, shake well, and then take 10mL Filter through a microporous membrane to obtain the standard solution 1 to be tested;

[0075] Weigh 200mg of HMX and 15mg of TATB, and prepare the standard solution 2 to be tested according to the aforementioned method;

[0076] Weigh 300mg of HMX and 30mg of TATB, and prepare the standard solution 3 to be tested according to the aforementioned method;

[0077] Acetonitrile and the standard solution to be tested were analyzed by liquid chromatography using the conditions in Table 1 below.

[0078] Table 1 The liquid chromatography conditions used in this embodiment

[0079] Liquid chromatography Shimadzu Liquid Chromatograph LC-2010AHT Chr...

Embodiment 2

[0083] Durability test:

[0084] Analyze the TATB in the standard solution 1 to be tested according to the liquid chromatography analysis conditions of Example 1, the difference is that the column temperature is set to 20°C and 40°C respectively, the results are as follows Figure 8 and 9 shown; Figure 8 is the liquid chromatogram of detecting TATB in standard solution 1 to be tested when the column temperature is 20°C; Figure 9 It is a liquid chromatogram of detecting TATB in the standard solution 1 to be tested when the column temperature is 40°C. Depend on Figure 8-9 It can be seen that the detection of TATB can be realized by adjusting the column temperature in a small range, indicating that the determination method provided by the present invention has good temperature durability.

[0085] Analyze the TATB in the standard solution 1 to be tested according to the liquid chromatography analysis conditions of Example 1, the difference is that the flow rate is set to 0...

Embodiment 3

[0087] Solution stability test:

[0088] Prepare standard solution 1 to be tested, place the 0h, 2h, 4h, 8h, 12h, 18h and 24h according to the liquid chromatography analysis condition of embodiment 1 to test the liquid phase chromatogram of TATB and HMX at room temperature, the peak area measurement result is as follows Table 2 shows.

[0089] Table 2 Stability test results

[0090] name 0h 2h 4h 8h 12h 18h 24h RSD% HMX% 0.10 0.12 0.15 0.15 0.15 0.16 0.16 0.42 TATB# 0.02 0.07 0.10 0.10 0.10 0.10 0.10 0.05

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Abstract

The invention belongs to the technical field of explosive detection, and relates to a method for determining the contents of TATB and HMX in explosive wastewater. The determination method provided bythe invention comprises the following steps of: by taking acetonitrile as a solvent, preparing an explosive containing HMX and TATB into a to-be-determined solution,or taking explosive wastewater as the to-be-determined solution; carrying out liquid chromatographic analysis on the to-be-detected liquid to obtain a liquid chromatogram; and calculating the contents of the obtained TATB and HMX according to the liquid chromatogram information. The conditions of liquid chromatographic analysis are as follows: a ZORBAX SB-C18 chromatographic column is adopted a chromatographic column; a mobile phase is an acetonitrile aqueous solution, the volume ratio of acetonitrile to water is 55: 45-65: 35; isocratic elution is adopted; an ultraviolet absorption detector is adopted a detector; and the detection wavelengths of the TATB and the HMX are 354 nm and 265 nm respectively; . According to the method disclosed by the invention, the contents of the TATB and HMX can be determined by adopting reversed-phase liquid chromatography.

Description

technical field [0001] The invention relates to the technical field of explosive detection, in particular to a method for determining the content of TATB and HMX in explosive wastewater. Background technique [0002] TATB (triaminotrinitrobenzene) is very insensitive to heat, friction and impact, and has good thermal stability and impact sensitivity, but TATB is almost insoluble in organic solvents, which limits its application; HMX (Oktojin) High energy, good thermal stability, but poor sensitivity, prone to accidental detonation due to high temperature, impact and other stimuli, both are widely used in weapons and equipment. Explosive wastewater often contains TATB and HMX at the same time, and the content of these two components must be analyzed in the wastewater recovery process, but the current existing technology only has a detection method for HMX, which uses acetonitrile / methanol / water as the mobile phase , HMX is measured at 230nm, while TATB has no obvious absorpt...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/14G01N30/30G01N30/32G01N30/34G01N30/60G01N30/74
CPCG01N30/02G01N30/06G01N30/14G01N30/30G01N30/32G01N30/34G01N30/60G01N30/74G01N2030/047G01N2030/324
Inventor 任华妮王博张芬岳冰芳荆昌伦董艳霞牛彩茹
Owner SHANXI BEIHUA GUANLYU CHEM IND
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