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Time resolution dynamic thermal analysis ion mobility spectrometry detection method

A time-resolved, ion transfer tube technology, applied in the field of time-resolved dynamic thermal desorption detection, can solve the problems of high price, uncomfortable rapid detection, large volume, etc., and achieve the effect of detection

Inactive Publication Date: 2017-06-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the methods used to detect peroxide explosives mainly include LC-MS, GC-MS, SIFT-MS, FTIR, NMR, fluorescence detection, etc. These detection methods are generally relatively large in size and expensive, and are not suitable for on-site rapid detection. detection

Method used

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  • Time resolution dynamic thermal analysis ion mobility spectrometry detection method
  • Time resolution dynamic thermal analysis ion mobility spectrometry detection method
  • Time resolution dynamic thermal analysis ion mobility spectrometry detection method

Examples

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Effect test

Embodiment 1

[0037] Add the sample cloth with sample TATP and HMTD dropwise to the solvent that evaporates, and insert it into the thermal analysis sampler at a temperature of 120℃. TATP is first resolved into the reaction zone of the ion mobility spectrum, and the reagent produced by ionization with the acetone reagent molecule Ion reaction generates the product ion peak of TATP, which is resolved after HMTD, enters the reaction zone of the ion mobility spectrum, and reacts with reagent ions to generate the proton molecular ion peak of HMTD. The generated product ions are periodically turned on under the action of an electric field. The ion gate enters the migration zone. Due to the difference in mobility, it reaches the detector to be detected successively, thus realizing the time-resolved dynamic thermal analysis detection of TATP and HMTD.

Embodiment 2

[0039] Wipe the sample cloth with hand cream, and then drop the TATP solution on the sample cloth. After the solvent evaporates and dry, insert it into the thermal desorption sampler at a temperature of 120℃. TATP is first resolved into the reaction zone of the ion mobility spectrum. It reacts with reagent ions generated by ionization of acetone reagent molecules to generate fragment ions of TATP. Since the matrix of hand cream is a macromolecular organic substance, it is resolved and enters the ionization reaction zone. The generated product ions pass through the periodic cycle under the action of electric field. The opened ion gate enters the migration zone, and due to the difference in mobility, it reaches the detector one after another to be detected, thus realizing the time-resolved dynamic thermal analysis detection of TATP in the hand cream matrix.

Embodiment 3

[0041] Drop the perfume base mixed with HMTD on the sampling cloth. After the solvent evaporates and dry, insert it into the thermal analysis sampler at a temperature of 120℃. The perfume interference substance is first resolved and enters the reaction zone of the ion mobility spectrum with acetone. The reagent ion generated by the ionization of the reagent molecule reacts, parsed out after HMTD, and enters the reaction zone to react with the reagent ion generated by the ionization of the acetone reagent molecule. The generated product ion enters the migration zone through the periodically opened ion gate under the action of the electric field. The difference of the rate, arrives at the detector to be detected successively, thus realizing the time-resolved dynamic thermal analysis detection of HMTD in the perfume matrix.

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Abstract

The invention designs a time resolution dynamic thermal analysis ion mobility spectrometry detection method. Based on an ion mobility spectrometry and a thermal analysis sampling technology, time resolution dynamic thermal analysis detection of peroxide explosion TATP and / or HMTD as well as time resolution dynamic thermal analysis detection of TATP and / or HMTD in a complex matrix are realized.

Description

Technical field [0001] The present invention designs a time-resolved dynamic thermal analysis ion mobility spectrum detection method based on ion mobility spectrum and thermal analysis sampling technology, and realizes the time-resolved dynamic thermal analysis of peroxide explosives HMTD and / or TATP in a complex matrix Detection. Background technique [0002] Due to the easy availability of synthetic raw materials and simple preparation methods, peroxide explosives have been increasingly used in terrorist attacks and criminal activities in recent years. Because peroxide explosives are different from traditional explosives and do not contain nitro groups, they are often criminalized. The molecules are hidden and carried, so the detection of peroxide explosives in complex matrices has attracted widespread attention. [0003] At present, the methods used to detect peroxide explosives mainly include LC-MS, GC-MS, SIFT-MS, FTIR, NMR, fluorescence detection, etc. These detection method...

Claims

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Application Information

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IPC IPC(8): G01N27/62
Inventor 李海洋蒋丹丹彭丽英刘骥巍陈红
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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