CN109738606A - A kind of detection device and detection method of explosive - Google Patents
A kind of detection device and detection method of explosive Download PDFInfo
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- CN109738606A CN109738606A CN201811313778.2A CN201811313778A CN109738606A CN 109738606 A CN109738606 A CN 109738606A CN 201811313778 A CN201811313778 A CN 201811313778A CN 109738606 A CN109738606 A CN 109738606A
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Abstract
The invention discloses a kind of explosive detection devices and detection methods, detection device includes the gas test chamber being connected to by gas circuit and sample room, pump is additionally provided between sample room and gas test chamber, for gas in sample room to be mixed with gas circulation in gas test chamber, it is provided with gas-detecting device in gas test chamber, is provided with ultraviolet lamp in sample room.Using the photodissociation characteristic of nitro explosive, explosive molecule itself is not detected directly, but detection and identification to nitro explosive are realized by the oxides of nitrogen gas of detection nitro explosive photodissociation release.The device has the characteristics that small in size, light weight and cost is low, and the explosive quick detection and explosive that can be employed flexibly for various public places identify.
Description
Technical field
The present invention relates to explosives detection techniques fields, and in particular to a kind of detection device and detection method of explosive.
Background technique
Peace and development is the theme of the world today.However the explosive terror attack event frequently occurred in recent years, it causes
Casualties and a wide range of panic, seriously threatens the peacefulness of society.Quickly remaining trace explosive in detection environment, with
Track, the position for determining explosive are the key that explosion prevention attacks generation.Nitro explosive, use big with brisance
The features such as extensively and being easy to get, is the important explosive that terrorist is commonly used.Therefore, develop live, quick, sensitive, quasi-
True trace nitro explosive detection method has very important significance.
Explosive is the metastable substance of a kind of high-energy.Compared to other substances present in normal environment, in light
Photodissociation release gas easily occurs according under the conditions of.For example, nitro explosive is excited by light under ultraviolet lighting, high energy nitro
Photodissociation can occur for group, discharge oxides of nitrogen gas (mainly by NO2、NO、N2The gas compositions such as O).Due to point of different explosives
It is different to solve mechanism, the nitrogen oxide species and relative amount of release are also different.
Currently, the main technical principle of detection trace explosive has: fluorescent spectrometry, ion mobility spectrometry, Raman spectrum
Method, colorimetric method and sensing method etc..These methods are quick-fried to realize by directly detecting the presence or absence of explosive molecule itself
Fried analyte detection.However, the saturated vapor pressure of explosive is very low under room temperature, especially in an open environment, pass through inspection
The explosive molecule for surveying volatilization realizes that the detection of explosive is extremely difficult, needs high detection sensitivity.In addition, high inspection
Surveying sensitivity will lead to the stability reduction of device, rate of false alarm raising.
Summary of the invention
In order to overcome the above technical defects, the present invention provides a kind of explosive detection devices and detection method, this method
Using the photodissociation characteristic of nitro explosive, explosive molecule itself is not detected directly, but detects nitro explosive photodissociation
The oxides of nitrogen gas of release realizes the detection and identification to nitro explosive.
In order to reach above-mentioned technical effect, the present invention provides a kind of explosive detection devices, including are connected to by gas circuit
Gas test chamber and sample room, pump is additionally provided between sample room and gas test chamber, for by gas in sample room with
Gas circulation mixes in gas test chamber, is provided with gas-detecting device in the gas test chamber, is arranged in the sample room
There is ultraviolet lamp.
The present invention also provides a kind of detection methods of explosive, comprising the following steps:
(1) explosive sample to be measured is placed in sample room；
(2) mix gas with gas circulation in gas test chamber using pump, at the beginning of gas-detecting device obtains
Atmosphere data in beginning sample room；
(3) ultraviolet lamp, irradiating sample are opened, explosive photodissociation discharges gas；Meanwhile pump makes gas and gas in sample room
Gas in test chamber recycles mixing, and gas-detecting device obtains the gas data of explosive photodissociation release；
(4) gas data that test obtains is converted into finger-print, by searching database, obtains explosive information.
Further technical solution is that explosive is the energy-containing compound containing nitryl group in the step (1).
Further technical solution is that gas-detecting device is passed selected from semi-conductor type oxides of nitrogen gas in the step (2)
Feel array, electrochemistry type oxides of nitrogen gas sensor array, any one in optical type oxides of nitrogen gas sensors.
Further, the gas of gas-detecting device detection is the gas that the object of device detection is explosive photodissociation release
Information, detection gas type include but is not limited to nitrogen oxides.
Further technical solution is that the flow velocity pumped in the step (2) is 10~500mL/min.
Further technical solution is, the wave-length coverage for the ultraviolet light that ultraviolet lamp issues in the step (3) is 100~
400nm, exposure intensity are 0~50w/cm2。
The present invention is further detailed below, the present invention utilizes ultraviolet light explosive, it is made to decompose release
Feature oxides of nitrogen gas；Oxides of nitrogen gas detection technique is recycled, the type that explosive decomposes release nitrogen oxides is obtained
And relative amount；Finally, obtaining " fingerprint chromatogram " that explosive decomposes release oxides of nitrogen gas by data processing, passing through
Database retrieval, realizes highly sensitive detection and identification to explosive, and explosive to be detected is nitro explosive, including nitre
Base class explosive (such as TNT, HMX, RDX, PETN, CL20) and its explosion Tetramune.Wherein gas detection technology include it is all can
Detect the technological means of oxides of nitrogen gas, including but not limited to semi-conductor type oxides of nitrogen gas sensors and array.
Compared with prior art, the present invention has the following advantages: since nitro explosive molecule contains multiple nitros
Group, an explosive molecule can decompose the multiple nitrogen oxides molecules of release, detect explosive by detection nitrogen oxides
Molecule can reduce detection limit and improve detection sensitivity；Explosive is the metastable substance of a kind of high-energy, by regulating and controlling light
The selective photodissociation of explosive may be implemented in solution condition, realizes the highly selective response to explosive.What every class explosive decomposed
Nitrogen oxide species and relative amount are different, can be realized by the nitrogen oxides " fingerprint chromatogram " of detection explosive photodissociation release
Detection and identification to various explosives, this method principle are simple, it is easy to accomplish, a kind of novel portable explosion quality testing can be formed
Survey product.The device has the characteristics that small in size, light weight and cost is low, can be employed flexibly for the explosive of various public places
Quick detection and explosive identify.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of explosive detection devices one provided by the invention；
Fig. 2 is the electrical response figure of the HMX explosive of explosive detection devices one provided by the invention test；
Fig. 3 is the structural schematic diagram of explosive detection devices two provided by the invention；
Fig. 4 is the electrical response figure of the HMX explosive of explosive detection devices two provided by the invention test.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment 1
The present embodiment realizes that the structural schematic diagram of the device is as shown in Figure 1, include logical using explosive detection devices one
Oxides of nitrogen gas test chamber and the sample room for crossing gas circuit connection, also set up between sample room and oxides of nitrogen gas test chamber
There is pump, for mixing gas in sample room with gas circulation in oxides of nitrogen gas test chamber, is provided in gas test chamber
Conductor type oxides of nitrogen gas sensor array is provided with ultraviolet lamp in sample room.
It is specific that detection method includes the following steps:
(1) when detecting, by the method for wiping sampling, sample is placed in closed sample room, the volume of sample is
5mL；
(2) using pump (flow velocity 100mL/min), follow atmosphere in sample room with gas in oxides of nitrogen gas test chamber
Ring mixing, the test of semi-conductor type oxides of nitrogen gas sensor array obtain the atmosphere data in initial sample room；
(3) ultraviolet violet light switch is opened, with ultraviolet light irradiating sample, explosive photodissociation discharges oxides of nitrogen gas；Meanwhile it pumping
Mix oxides of nitrogen gas in sample room with nitrogen oxides test chamber gas circulation, semi-conductor type oxides of nitrogen gas senses battle array
Column test obtains explosive photodissociation and discharges nitrogen oxides atmosphere information；
(4) by data processing, atmosphere information is converted into finger-print, by searching database, obtains explosive letter
Breath.Fig. 2 is the electrical response figure for the 10ug HMX explosive that use device one is tested.
From fig. 2 it can be seen that sensor array shows initial resistivity value when loop test；As ultraviolet light 10ug
When HMX sample, HMX decomposition releases nitrogen oxides, and semi-conductor type oxides of nitrogen gas sensor array rings nitrogen oxides
It answers, resistance signal quicklys increase；When illumination stops, the lasting generation of nitrogen oxides, resistance signal are not reduced slowly；Finally
Signal recovery is carried out to sensor array using air, resistance value is restored to original state.Since each sensor is to nitrogen oxides
Response signal it is different, be obtained with the finger-print of HMX photodissociation release nitrogen oxides in this way, sensor1 in figure~
Sensor6 represents six different sensors.
Embodiment 2
The present embodiment realizes that the structural schematic diagram of the device is as shown in figure 3, include logical using explosive detection devices two
Oxides of nitrogen gas test chamber and the sample room for crossing gas circuit connection, also set up between sample room and oxides of nitrogen gas test chamber
There is pump, for mixing gas in sample room with gas circulation in oxides of nitrogen gas test chamber, is provided in gas test chamber
Conductor type oxides of nitrogen gas sensor array is provided with ultraviolet lamp in sample room, and wherein sample room is in-situ sampling room.
It is specific that detection method includes the following steps:
(1) when detecting, in-situ sampling room is placed on sample to be tested surface, forms semitight sample room, the volume of sample
For 5mL；
(2) using pump (flow velocity 100mL/min), follow atmosphere in sample room with gas in oxides of nitrogen gas test chamber
Ring mixing, the test of semi-conductor type oxides of nitrogen gas sensor array obtain the atmosphere data in initial sample room；
(3) ultraviolet violet light switch is opened, with ultraviolet light irradiating sample, explosive photodissociation discharges oxides of nitrogen gas；Meanwhile it pumping
Mix oxides of nitrogen gas in sample room with nitrogen oxides test chamber gas circulation, semi-conductor type oxides of nitrogen gas senses battle array
Column test obtains explosive photodissociation and discharges nitrogen oxides atmosphere information；
(4) by data processing, atmosphere information is converted into finger-print, by searching database, obtains explosive letter
Breath.Fig. 4 is the electrical response figure for the 10ug HMX explosive that use device two is tested.
It can be seen from figure 4 that sensor array shows initial resistivity value when loop test；As ultraviolet light 10ug
When HMX sample, HMX decomposition releases nitrogen oxides, and semi-conductor type oxides of nitrogen gas sensor array rings nitrogen oxides
It answers, resistance signal quicklys increase；When illumination stops, the lasting generation of nitrogen oxides, resistance signal are not reduced slowly；Finally
Signal recovery is carried out to sensor array using air, resistance value is restored to original state.Since each sensor is to nitrogen oxides
Response signal it is different, be obtained with the finger-print of HMX photodissociation release nitrogen oxides in this way, sensor1 in figure~
Sensor6 represents six different sensors.
Claims (6)
1. a kind of detection device of explosive, which is characterized in that including the gas test chamber being connected to by gas circuit and sample room,
Pump is additionally provided between sample room and gas test chamber, it is mixed for recycling gas in gas in sample room and gas test chamber
It closes, is provided with gas-detecting device in the gas test chamber, is provided with ultraviolet lamp in the sample room.
2. a kind of detection method of explosive, which comprises the following steps:
(1) explosive sample to be measured is placed in sample room；
(2) mix gas with gas circulation in gas test chamber using pump, the initial sample of gas-detecting device acquisition
Atmosphere data in product room；
(3) ultraviolet lamp, irradiating sample are opened, explosive photodissociation discharges gas；Meanwhile pump makes gas and gas test in sample room
Gas in chamber recycles mixing, and gas-detecting device obtains the gas data of explosive photodissociation release；
(4) gas data that test obtains is converted into finger-print, by searching database, obtains explosive information.
3. the detection method of explosive according to claim 2, which is characterized in that in the step (1) explosive be containing
The energy-containing compound of nitryl group.
4. the detection method of explosive according to claim 2, which is characterized in that gas detection fills in the step (2)
It sets selected from semi-conductor type oxides of nitrogen gas sensor array, electrochemistry type oxides of nitrogen gas sensor array, optical type nitrogen oxidation
Any one in object gas sensor.
5. the detection method of explosive according to claim 2, which is characterized in that the flow velocity of pump is in the step (2)
10~500mL/min.
6. the detection method of explosive according to claim 2, which is characterized in that ultraviolet lamp issues in the step (3)
Ultraviolet light wave-length coverage be 100~400nm, exposure intensity be 0~50w/cm2。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296975A (en) * | 2019-05-29 | 2019-10-01 | 北京理工大学 | Energetic material macroparameter quickly detects spectroscopic system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558351A (en) * | 2013-08-01 | 2014-02-05 | 浙江工商大学 | Green tea beverage quality analysis apparatus based on intelligent electronic nose system, and method |
| CN108088837A (en) * | 2017-11-24 | 2018-05-29 | 复旦大学 | A kind of trace explosive and drug detector and its application method |
-
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- 2018-11-06 CN CN201811313778.2A patent/CN109738606A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558351A (en) * | 2013-08-01 | 2014-02-05 | 浙江工商大学 | Green tea beverage quality analysis apparatus based on intelligent electronic nose system, and method |
| CN108088837A (en) * | 2017-11-24 | 2018-05-29 | 复旦大学 | A kind of trace explosive and drug detector and its application method |
Non-Patent Citations (2)
| Title |
|---|
| 孟凡利: "基于一维纳米材料的气体传感器及其应用研究", 《中国博士学位论文全文数据库 信息科技辑》 * |
| 王晓川: "痕量炸药的现场探测技术现状分析", 《2013年第二届全国危险物质与安全应急技术研讨会论文集》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296975A (en) * | 2019-05-29 | 2019-10-01 | 北京理工大学 | Energetic material macroparameter quickly detects spectroscopic system |
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Application publication date: 20190510 |