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
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[0036] Example 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.
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[0038] Example 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.
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[0040] Example 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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