Supercharge Your Innovation With Domain-Expert AI Agents!

A rapid detection method and device for trace explosives

A detection method and detection device technology are applied in the field of explosive detection to achieve the effects of fast analysis speed, good reproducibility and no chemical pollution

Active Publication Date: 2019-03-29
EAST CHINA UNIV OF TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rapid detection method for trace explosives with high sensitivity, strong pertinence, convenient operation, short detection time and no radioactive contamination under the current complex international and domestic explosive attacks.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A rapid detection method and device for trace explosives
  • A rapid detection method and device for trace explosives
  • A rapid detection method and device for trace explosives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: detection of trace explosives in solution

[0049] Detection object: explosives attached to the test paper

[0050] Detection process:

[0051] Surface desorption atmospheric pressure chemical ionization ion mobility spectrometry device (total length 14cm) debugging: the separation and detection device is set to negative ion mode, the transfer tube has an inner diameter of 1 cm and a length of 7 cm, and the stainless steel metal ring of the transfer tube is front to back (from the ion The direction from the gate to the detector) is sequentially applied with a voltage of 2000V, 1800V, 1600V, 1400V, 1200V, 1000V, and 800V, thereby generating a uniform electric field of 210V / cm in the transfer tube, and the drift gas is air. Air is selected as the carrier gas for the sample introduction device. The applied voltage of the discharge needle of the ionization device: -3.5KV; the working current: 16μA; the auxiliary desorption gas: air.

[0052] Turn on the ins...

Embodiment 2

[0058] Embodiment 2: detection sensitivity experiment

[0059] Solution configuration: use RDX as the detection object, use acetone as the solvent, make a standard stock solution with an initial concentration of 10-5g / μL, and gradually dilute the stock solution 10 times with acetone until the concentrations are 10 -6 g / μL, 10 -7 g / μL, 10 -8 g / μL and 10 -9 The g / μL solution was used for the determination.

[0060] Experimental method: According to the experimental procedure in Example 1, samples with various concentrations were detected and analyzed, and each sample was detected three times.

[0061] Experimental results: The detection limit of RDX measured according to the above method is: 0.5pg, the average signal intensity and the corresponding standard deviation (in brackets) are: 52.67 (2.19%), 111.6 (1.71%) , 226.97 (5.23%), 315.67 (1.28%), 360.59 (1.18%), draw the working curve, such as Figure 7 shown. In the range of 0.1-50pg, the signal intensity (y) has a good ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention is a rapid detection method and device for trace explosives. The method adopts ion mobility spectrometry detection technology, including three steps of ionization, separation and detection of sample molecules, and is characterized in that the surface desorption atmospheric pressure chemical ionization device is used as the ionization source Implement the ionization; correspondingly, the device uses the surface desorption atmospheric pressure chemical ionization device (2) as the ionization source to replace the original radioactive ionization source, and the sample introduction device (1) of the traditional ion mobility spectrometer and the separation and detection of the ions to be measured The device (3) is used in combination to achieve high sensitivity, strong pertinence, convenient operation, short detection time, and high-efficiency detection of no radioactive pollution for explosives. It solves the technical problems in the detection of explosives and can be applied to airports, stations, Explosives monitoring in public places such as docks.

Description

technical field [0001] The invention belongs to the technical field of explosive detection, and relates to a rapid detection method and device for trace explosives. Background technique [0002] Since Nobel invented safe explosives in the 1870s, explosives have played an extremely important role in the development of modern society, especially in the military, aerospace, infrastructure and some industrial fields. In recent years, with the expansion of the application range of explosives, the emergence of new types of explosives, and the invention of new explosives, terrorist bombings have occurred frequently all over the world, and various forms of explosives and explosive devices have been used in terrorist crimes. Serious It endangers people's lives and properties, undermines social stability, hinders economic development, and even leads to regional economic and humanitarian crises. In order to control terrorist bombing activities in an attempted state, many countries and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/68
Inventor 王姜刘林朱小兵陈焕文郑健金洁欧阳光
Owner EAST CHINA UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com