Active inhalation type on-site rapid narcotic drug detector

Abstract

Belonging to the field of analytical instruments and detection, the invention relates to an active inhalation type drug on-site rapid detector, which comprises a sampling system, an ion gate, a metal electrode ring, a fixing rod, a detector and the like. The sampling system comprises an air pump, an air suction pipeline, a heating wire and a conveying pipeline. The device adopts a design mode of combining active suction of carrier gas and heating, has a series of characteristics of active suction of a to-be-detected sample, short sampling interval, rapid analysis and the like, and effectively overcomes the inherent defect of low detection speed of a wiping sample introduction mode, so that the target of rapid field detection of drugs is achieved. The active inhalation type on-site rapid drug detector disclosed by the invention has extremely high application value and wide application prospect in the fields of on-site detection of prohibited drugs and the like.

Description

Technical Field

[0001] The invention belongs to the field of analytical instruments and detection, and specifically relates to an active inhalation type on-site rapid drug detection instrument. Background Art

[0002] Ion mobility spectrometry mainly uses the difference in the migration speed of different drug product ions in a uniform electric field to characterize drugs, thereby achieving rapid drug detection. This technology is a trace detection technology that can be used in an atmospheric pressure environment. It has played an important role in drug inspection and other fields, and has effectively combated drug crimes.

[0003] At present, the sampling method of traditional drug on-site rapid detection instruments is wiping sampling. Specifically, after wiping the sample with a sampling cloth, the sampling cloth is placed in a thermal desorption chamber. The trace sample on the sampling cloth is desorbed by high temperature and then enters the instrument with the airflow for detection. This sampling method has problems such as long wiping sampling operation time and is not conducive to improving the detection speed, which to a certain extent affects the efficiency of drug inspection. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides an active inhalation-type drug on-site rapid detection instrument, which simplifies the operation process of the instrument, improves the efficiency of drug detection, and realizes rapid drug detection on-site. The present invention has a series of characteristics such as active inhalation of the sample to be tested and rapid analysis, effectively overcoming the inherent defect of the wiping sampling method with slow detection speed, thereby achieving the goal of rapid drug detection on-site.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: An active inhalation-type on-site rapid drug detector comprises a fixed rod, along which an ionization source, a sampling system, an ion gate, a plurality of parallel metal electrode rings and a detector are sequentially arranged; the ionization source is fixed to the starting end of the fixed rod, and the detector is fixed to the rear end of the fixed rod; the sampling system is arranged between the ionization source and the ion gate; the ionization source generates reaction ions, and ion-molecule reactions occur with sample molecules collected by the sampling system in a reaction zone; the reaction zone and the migration zone are separated, with an ion gate arranged in between; after ions are generated in the reaction zone, they enter the migration zone through the ion gate under the action of the electric field, and then reach the detector arranged at the rear of the migration zone to complete drug detection.

[0006] Furthermore, the sampling system includes a first air intake pipe, a second air intake pipe, a heating wire, an outlet, and a delivery pipe.

[0007] Furthermore, the first air intake duct and the second air intake duct are used to inhale air during sampling; the heating wire is used to heat the inhaled air; after the airflow is emitted from the outlet, it collides with the surface of the object to be tested and then recoils; the conveying duct delivers the sample to be tested attached to the surface of the object to be tested carried by the recoiled airflow into the reaction area.

[0008] Furthermore, the angle θ between the emission port and the surface of the object to be measured is in the range of 30°-60°.

[0009] Furthermore, the first air intake pipeline and the second air intake pipeline are located on both sides of the sampling system.

[0010] Furthermore, the heating wire is located between the first air intake duct, the second air intake duct and the outlet.

[0011] Further, the delivery pipeline is located in the middle of the sampling system.

[0012] Furthermore, the first air intake duct and the second air intake duct both include an air pump.

[0013] Furthermore, there are four fixing rods.

[0014] Beneficial effects: The present invention adopts a design method combining active inhalation of carrier gas with heating, which overcomes the inherent defect of slow detection speed of wiping sampling method, simplifies the operation process of the instrument, and effectively improves the sample detection speed, thereby achieving the goal of rapid on-site drug detection. The active inhalation drug on-site rapid detection instrument involved in the invention has extremely strong application value and broad application prospects in the fields of drug control on-site detection and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of an active inhalation-type on-site rapid drug detection device of the present invention; Figure 2 Schematic diagram of the sampling system.

[0016] Among them, the figure markings are: 1-ionization source, 2-sampling system, 3-ion gate, 4-multiple metal electrode rings arranged in parallel, 5-fixing rod, 6-detector, 7-first air intake pipe, 8-second air intake pipe, 9-exit port, 10-heating wire, 11-object surface, 12-transport pipeline. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] like Figure 1 As shown, the active inhalation-type drug on-site rapid detector of the present invention is divided into an ionization source 1, a sampling system, a reaction zone, an ion gate 3, a migration zone and a detector 6. The main structure includes an ionization source 1, a sampling system 2, an ion gate 3, a plurality of metal electrode rings 4 arranged in parallel, a fixed rod 5, a detector 6 and other main components. The ionization source 1 generates reaction ions, and ion-molecule reactions occur in the reaction zone with the sample molecules collected by the sampling system 2. The reaction zone and the migration zone are separate, and an ion gate 3 is arranged in the middle. After the ions are generated in the reaction zone, they enter the migration zone through the ion gate 3 under the action of the electric field, and then reach the detector 6 arranged at the rear of the migration zone to complete the drug detection. The fixed rod 5 is arranged at the upper and lower parts of the reaction zone and the migration zone, and a plurality of metal electrode rings 4 arranged in parallel are arranged in the reaction zone and the migration zone.

[0019] like Figure 2 As shown, the sampling system includes a first air intake pipe 7, a second air intake pipe 8, a heating wire 10, an outlet 9 and a delivery pipe 12. The first air intake pipe 7 and the second air intake pipe 8 are located on both sides of the sampling system 2. The heating wire 10 is located between the first air intake pipe 7, the second air intake pipe 8 and the outlet 9. The delivery pipe 12 is located in the middle of the sampling system 2. The first air intake pipe 7 and the second air intake pipe 8 both include air pumps.

[0020] During sampling, the first air suction pipe 7 and the second air suction pipe 8 suck air through the air pump, and the air flow rate is about 1 liter / minute; the heating wire 10 heats the sucked air, and the air flow recoils after colliding with the surface 11 of the object to be tested. Subsequently, the recoiled air flow carries the sample to be tested attached to the surface 11 of the object into the reaction area through the conveying pipe 12. The heating wires 10 are arranged in a row, and the angle between the row and the surface 11 of the object is θ.

[0021] In summary, the present invention provides an active inhalation-type drug on-site rapid detection instrument, which simplifies the instrument's operating procedures, improves drug detection efficiency, and realizes rapid drug on-site detection. The present invention has a series of characteristics such as active inhalation of samples to be tested and rapid analysis, effectively overcoming the inherent defect of the wiping sampling method with a slow detection speed, thereby achieving the goal of rapid drug on-site detection.

[0022] The parts not elaborated in detail in the description of the present invention belong to the known technology in the art. The above embodiments are provided only for the purpose of describing the present invention, and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims. Various equivalent substitutions and modifications made without departing from the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An active inhalation-type rapid drug detection device, characterized in that: It includes a fixed rod, along which an ionization source, a sampling system, an ion gate, a plurality of parallel metal electrode rings and a detector are sequentially arranged; the ionization source is fixed at the starting end of the fixed rod, and the detector is fixed at the rear end of the fixed rod; a sampling system is arranged between the ionization source and the ion gate; the ionization source generates reaction ions, and ion-molecule reactions occur with sample molecules collected by the sampling system in a reaction zone; the reaction zone and the migration zone are separated, with an ion gate arranged in between; after ions are generated in the reaction zone, they enter the migration zone through the ion gate under the action of the electric field, and then reach the detector arranged at the rear of the migration zone to complete drug detection.

2. The active inhalation-type on-site rapid drug detector according to claim 1, characterized in that: The sampling system comprises a first air suction pipeline, a second air suction pipeline, a heating wire, an outlet, and a conveying pipeline.

3. The active inhalation-type on-site rapid drug detector according to claim 1, characterized in that: The first air intake duct and the second air intake duct are used to inhale air during sampling; the heating wire is used to heat the inhaled air; after the airflow is emitted from the outlet, it collides with the surface of the object to be tested and then recoils; the conveying duct delivers the sample to be tested attached to the surface of the object to be tested carried by the recoiled airflow into the reaction area.

4. The active inhalation-type on-site rapid drug detector according to claim 1, characterized in that: The angle θ between the emission port and the surface of the object to be measured is in the range of 30°-60°.

5. The active inhalation-type on-site rapid drug detector according to claim 2, characterized in that: The first air suction pipeline and the second air suction pipeline are located on both sides of the sampling system.

6. The active inhalation-type on-site rapid drug detector according to claim 2, characterized in that: The heating wire is located between the first air suction duct, the second air suction duct and the outlet.

7. The active inhalation-type on-site rapid drug detector according to claim 2, characterized in that: The transfer pipe is located in the middle of the sampling system.

8. The active inhalation-type on-site rapid drug detector according to claim 2, characterized in that: The first air intake pipeline and the second air intake pipeline both include an air pump.

9. The active inhalation-type on-site rapid drug detector according to claim 1, characterized in that: There are four fixing rods.

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