WO2009132517A1

WO2009132517A1 - Method and device for providing sampling carrier continuously

Info

Publication number: WO2009132517A1
Application number: PCT/CN2009/000455
Authority: WO
Inventors: 彭华; 刘建华; 贺文; 李徽; 张仲夏
Original assignee: 同方威视技术股份有限公司
Priority date: 2008-04-29
Filing date: 2009-04-28
Publication date: 2009-11-05
Also published as: CN101571457A; HK1138370A1; CN101571457B

Abstract

A method and a device for continuously providing a sampling carrier (4) are used in a hand-held wiping sampling instrument. The method comprises: firstly, shaping the sampling carrier (4) into a strip; then, folding the strip several times according to a certain length into a layered structure; then, sealing it in a store casing (1) with an exit at one end. The store casing (1) is installed on a proper sampling instrument. When sampling, the strip with a proper length is drawn out and fixed on a wiping surface, and the sampling part is severed for investigation after sampling. The device comprises the continuously folded sampling carrier (4) and the store casing (1) for storing the sampling carrier (4). A seal washer (3) is disposed in the exit of the store casing (1).

Description

Method and device for continuously providing sampling carrier

The present invention relates to a method and apparatus for continuously providing a sampling carrier. Background technique

At present, the explosive and drug detecting device of ion mobility spectrometry is a fast, sensitive and portable operation field detecting device. The device has been used in military and security agencies to detect explosives, drugs, chemical agents and other substances.

When ion mobility spectrometers detect prohibited items, in addition to gas injection (commonly known as smell), the most common method is solid injection. That is, the surface of the object is first wiped with a sampling carrier (such as sampling paper), and the explosive or drug particles are collected onto the sampling carrier, and then the sampling carrier is inserted into the inlet of the detecting device for detection and identification. In order to avoid contamination of the sample carrier, the sample carrier is typically mounted on a dedicated hand-held wiper sampler for sampling. The hand held sample device described has a handle, a sampling head coupled to the handle, and a setting for securing the sample carrier to the sampling head, as in U.S. Patent No. 5,859, 375, 375, and PCT Patent No. WO2007069088A3. Preferably, the sample carrier is a flexible sheet material, which is installed at the collection site of the device, and enables rapid and efficient collection of samples within a certain area under the condition that the human hand does not contact the surface of the object, and can also be used for difficult-to-reach areas. Perform sample collection.

Due to the limitation of the ion mobility spectrometer injection method, the sampling carrier must be flat, crisp, without bending, and without wrinkles. Many sampling carriers currently used, if they are curled or bent during storage, are not easily restored to a flat state during use, which may affect the injection detection. Therefore, the current sampling carrier can only be made into a single piece, once used. One piece to avoid curling or bending of the sample carrier during storage. The various hand-held wipe samplers currently used, the sampling carriers used are all monolithic. In this way, each test is taken out of the sample carrier storage device, and then the installation and sampling test, which not only makes the sampling operation complicated, but more serious, it is easy to contaminate other unused sample carriers. This is very detrimental to the storage of the sample carrier. In the prior patent technology, there are many selection and preparation processes of the carrier material: as described in US Patent No. 2006192098A1, a rubbing paper made of synthetic fiber for trace detection is described, which reduces the detection by heating. Interference. Synthetic fibers include aromatic polyamides such as Nomex, Kevlar or a combination of the two. Good It has chemical stability and will not decompose when the temperature is higher than or equal to 400 °C. It is suitable for trace analysis techniques such as ion mobility spectrometer and mass spectrometer. The sample capture device or wiping material described in U.S. Patent No. 6,642,513 B1 is composed of a loosely woven fiberglass fabric having a thin Teflon coating on its surface; it may also be a non-woven fabric made of high temperature polyamide fibers. However, the problems with the use of the carrier during storage and storage have not been considered. Summary of the invention

The invention is directed to the deficiencies of the above-mentioned existing sampling carrier, and provides a continuous sampling carrier and a storage device thereof which are not curled during storage, are not wrinkled during use, and can keep the sampling carrier flat and crisp after sampling, and are used by the hand-held wiping sampler. The installation is used multiple times in one installation, and the sampling carrier and its storage device can protect the sampling carrier from environmental pollutants and damage.

In one aspect, the invention provides a method for continuously providing a sampling carrier, characterized in that the method comprises: a first step: forming the sampling carrier into a strip-shaped strip, the width of the sheet-like strip Slightly narrower than the width of the extraction port of the carrier container containing the sampling carrier; second step: continuously folding the sampling carrier along its length, and the unit length of the folding is an integer multiple of the length of the sampling carrier used at one time; Third step: placing the folded sample carrier in the carrier container and extending one end of the sample carrier from the gasketed extraction port of the carrier container.

Preferably, the method of continuously providing a sampling carrier further comprises, prior to the third step, providing a cutting position mark, a mounting position mark, or a cutting line at a fold of the sampling carrier.

Preferably, the method for continuously providing a sampling carrier further comprises, before the third step,: performing an extraction purification treatment on the sample carrier with an organic solvent.

Preferably, the extracting and purifying treatment comprises placing the sampling carrier in a glass container, soaking with an ether or a ketone organic solvent, discharging the soaked solution, replacing the new organic solvent, and continuing to soak, thus repeatedly Thereby, the impurities in the sample carrier are removed, and then dried.

Preferably, the method for continuously providing the sampling carrier further comprises, after the third step, sealingly bonding or bonding the base of the carrier container containing the sampling carrier to the top cover, and then loading the package into the package. The package is vacuumed and stored.

In another aspect, the present invention provides a device for continuously providing a sampling carrier, The device comprises a continuously folded sampling carrier, the sampling carrier is located in a carrier container, the carrier container is sampled with a carrier extraction port, and a sealing pad is disposed in the extraction port.

Preferably, the continuously folded sampling carrier is a sheet-like elongated body, the width of the sheet-like strip being slightly narrower than the width of the extraction opening.

Preferably, the sheet-like elongated sample carrier is composed of a plurality of continuously folded layers along the length direction, and the unit length of the folding is an integral multiple of the length of the sample carrier used at one time.

Preferably, the sampling carrier placed in the carrier container has a distance of 0.1-2.5 cm between the folded top layer and the inner top surface of the container.

Preferably, the carrier container comprises a rectangular box body and a corresponding lid; the extraction port is a duckbill-shaped sampling carrier extraction port disposed at an upper portion of one side of the box body.

The advantages and positive effects of the present invention are as follows: A clean and sturdy sampling carrier that meets the requirements of wiping sampling can be continuously provided, and the sampling carrier can be used for multiple sampling after being installed at one time. The invention makes the sampling carrier less susceptible to contamination, and is beneficial to the long-term storage of the sampling carrier; and the use of the corresponding sampler can simplify the wiping sampling operation step, reduce the labor intensity of the worker, and improve the detection and recognition efficiency of the device. DRAWINGS

1 is a schematic structural view of a device of a sampling carrier of the present invention;

Figure 2 is a cross-sectional view along line A-A of the apparatus for sampling carrier of Figure 1;

Figure 3 is a cross-sectional view of the apparatus of the sampling carrier of Figure 1 taken along line B-B.

In the figure: 1, the box; 2, the lid; 3, the seal; 4, the sampling carrier

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in Figures 1 to 3, a specific method of the present invention for continuously providing a sampling carrier is as follows:

First, the sampling carrier 4 is cut into strips, the width of the strip is slightly narrower than that of the ion transport device, and the length should be used for dozens or hundreds of times. According to the length of the single-chip sampling carrier 1 or several times (depending on the length of the sampler), it is folded back and forth into several layers (similar to the old continuous printing paper). At this time, the effective sampling portion of the sampling carrier 4 is straight. When pulled out from one end, the sample carrier remains flat. Then, the sample carrier strip is mounted or cut or cut, and the sample carrier is extracted with an organic solvent.

Then, the laminated purified sample carrier 4 is placed in a rectangular box 1 having a duckbill-shaped outlet, and the sample carrier 4 cannot be filled with the storage box. The top layer of the sample carrier 4 and the lid 2 are A distance of 0.1-2.5 cm, preferably a distance of 0.5-1.5 cm. The sample carrier 4 is taken out from the duckbill mouth, and then the sample carrier is capped and sealed with a lid 2. At the mouth of the duckbill, there are seals 3 up and down to prevent airborne contaminants from entering the storage box.

Then, the sampling carrier sealed in the box body is placed in a sealed bag together with the box body to vacuum seal the package. The double sealed package protection prolongs the storage time of the sample carrier and improves the storage quality.

Then, when using, the box body is mounted on the corresponding sampler, and the appropriate length is extracted and fixed on the wiping surface during sampling, and the sampling portion is cut off and taken for detection after sampling.

A specific embodiment of the apparatus for continuously providing a sampling carrier of the present invention is:

A device for continuously providing a sample carrier, comprising a continuously folded sample carrier 4, in which a sample carrier 4 is placed, on which a lid 2 is mounted, between the lid and the cartridge A sampling carrier extraction port is provided, and a sealing member 3 is mounted at the extraction port. The continuously folded sample carrier is a sheet-like strip, and the width of the sheet-like strip should be slightly narrower than the width of the inlet of the ion-transplant device using the sample-like carrier. The sheet-like strip sample carrier is continuously folded in the length direction, and the length of each fold is adapted to the ion transport device using the sample carrier or several times the length of the single sample carrier. The sample carrier 4 placed in the casing 1 has a distance of 0.1-2.5 cm between the folded top layer and the top of the casing. The box body 1 may be a rectangular box made of metal or plastic material, and has a lid 2 at the upper end of the rectangular parallelepiped, a duckbill-shaped sampling carrier extracting port on one side of the rectangular parallelepiped, and a sealing member at the extracting opening. 3. The case 1 containing the sample carrier 4 is first sealed, and then placed in a package and vacuum sealed for storage.

The advantages of this embodiment are as follows: The product can continuously provide a clean and crisp sampling carrier that meets the requirements of the wiping sample, and can be used for multiple sampling after the sampling carrier is installed at one time. The sampling carrier is not easily contaminated, which is beneficial to the long-term storage of the sampling carrier. The product is used in conjunction with the corresponding sampler to simplify the wiping and sampling steps, reduce the labor intensity of the staff, and improve the detection and identification efficiency of the device.

The above is a preferred embodiment of the present invention, and other similarities and alternatives that are apparent to those skilled in the art in light of the disclosure of the present invention should fall within the scope of the present invention.

Claims

Rights request

What is claimed is: 1. A method for continuously providing a sampling carrier, the method comprising: a first step: forming the sampling carrier into a strip-shaped strip, the width of the sheet-like strip being slightly narrower than a volume The width of the extraction port of the carrier container containing the sampling carrier;

a second step: continuously folding the sample carrier along its length, the length of the folded unit being an integer multiple of the length of the sample carrier used at a time;

Third step: The folded sample carrier is placed in the carrier container and one end of the sample carrier is extended from the gasketed extraction port of the carrier container.

2. A method of continuously providing a sampling carrier according to claim 1, further comprising, prior to said third step, providing a cutting position mark, a mounting position mark, or a cutting at a fold of said sampling carrier line.

The method of continuously providing a sampling carrier according to claim 1, wherein before the third step, the method further comprises: extracting the sampling carrier with an organic solvent.

4. The method of continuously providing a sampling carrier according to claim 3, wherein said extracting and purifying treatment comprises placing said sampling carrier in a glass container and soaking with an ether or a ketone organic solvent, The soaked solution is discharged, replaced with a new organic solvent, and soaked several times, thereby removing impurities in the sample carrier, and then drying.

The method of continuously providing a sampling carrier according to claim 1, further comprising, after the third step, sealingly welding the base of the carrier container containing the sampling carrier to the top cover or Bonding, then loading into a package, vacuuming the package and storing.

6. A device for continuously providing a sampling carrier, the device comprising a continuously folded sampling carrier, the sampling carrier being located in a carrier container, the carrier container sampling a carrier extraction port, in the extracting A gasket is provided in the mouth.

The apparatus for continuously providing a sampling carrier according to claim 6, wherein the continuously folded sampling carrier is a sheet-like elongated body, and the width of the sheet-like strip is slightly narrower than the extraction opening The width.

8. Apparatus for continuously providing a sampling carrier according to claim 7 wherein: The sheet-like strip sample carrier is composed of a plurality of continuously folded layers along the length direction, and the unit length of the fold is an integral multiple of the length of the sample carrier used at one time.

The apparatus for continuously providing a sampling carrier according to any one of claims 6 to 8, wherein the sampling carrier placed in the carrier container, the folded top layer and the top surface of the container are There is a distance between 0.1 and 2.5 cm.

10. The apparatus for continuously providing a sampling carrier according to claim 6, wherein the carrier container comprises a rectangular box body and a corresponding lid; the extraction port is disposed at one side of the box body. The upper duckbill-shaped sampling carrier extracts the mouth.