CN212941579U - Metal organic framework solid phase micro-extraction device - Google Patents
Metal organic framework solid phase micro-extraction device Download PDFInfo
- Publication number
- CN212941579U CN212941579U CN202020578910.9U CN202020578910U CN212941579U CN 212941579 U CN212941579 U CN 212941579U CN 202020578910 U CN202020578910 U CN 202020578910U CN 212941579 U CN212941579 U CN 212941579U
- Authority
- CN
- China
- Prior art keywords
- outer tube
- organic framework
- extraction
- push
- pull rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a metal organic framework solid phase micro-extraction device, its structure includes the main part the penetrator outer tube in the main part, the injector outer tube runs through the main part, just the end of injector outer tube stretches out outside the main part the inner chamber cross-under of injector outer tube has the push-and-pull rod of stainless steel material stretch out the upper end of push-and-pull rod the last port of injector outer tube just is equipped with the handle, the tip of push-and-pull rod is the extraction probe the outer wall of extraction probe is equipped with metal organic framework material layer. The utility model discloses simple structure, low cost, the extraction layer is stable difficult for droing, and the extraction probe can not split, is applicable to solid phase micro-extraction process.
Description
Technical Field
The utility model relates to a solid phase micro-extraction device, in particular to a metal organic framework solid phase micro-extraction device.
Background
Solid Phase Microextraction (SPME) is a solvent-free sample pretreatment method integrating sampling, extraction, concentration and sample introduction. Compared with the traditional sample pretreatment technology, the SPME has the advantages of simple operation, convenient carrying, low solvent consumption, easy combination of gas chromatography and high performance liquid chromatography, and the like. The SPME has the core part of extraction fiber coated with adsorbing material, and the target matter is concentrated and enriched in the fiber coating and then is subjected to thermal desorption or solvent desorption for separation and detection. The nature of the fiber coating affects the partitioning of the target between the substrate and the coating, determining the extraction efficiency of the SPME. In recent years, the sample pretreatment technology is applied to various fields, but the sample pretreatment technology is used in a large number of commercialized devices, the devices are expensive, and fiber coating materials have many defects. People replace expensive commercial devices with gas chromatography microsamplers, generally prepare an extraction coating on the surface of a hollow quartz fiber, then put the fiber into a microsampler tube, and the fused quartz fiber extraction head is easy to break in the process of pushing out and pulling back in a needle. People replace quartz fiber with a stainless steel capillary tube, insert a prepared extraction probe into the stainless steel capillary tube, prepare an extraction coating on the surface of the hollow quartz fiber, and then cap the quartz fiber extraction head at the tail end of the stainless steel wire.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a metal organic framework solid phase micro-extraction device to solve the problem that the fibre is easy to be cracked or drop when current micro-extraction device is used.
The utility model discloses a realize like this: the utility model provides a metal organic framework solid phase micro-extraction device, includes the main part it has the injector outer tube to wear to have connect in the main part, the injector outer tube runs through the main part, just the end of injector outer tube stretches out outside the main part the inner chamber cross-under of injector outer tube has stainless steel's push-and-pull rod stretch out the upper end of push-and-pull rod the last port of injector outer tube just is equipped with the handle, the tip part of push-and-pull rod is the extraction probe the outer wall of extraction probe is equipped with metal organic framework material layer.
The metal organic framework material layer is formed through chemical bonding, and the thickness of the metal organic framework material layer is 30-40 microns.
The diameter of the upper half part of the inner cavity of the sample injector outer tube is smaller than that of the lower half part of the inner cavity, and the upper half part of the inner cavity of the sample injector outer tube is in sliding fit with the outer wall of the push-pull rod.
The tail end of the sample injector outer tube is in a pointed shape.
The outer surface of the extraction probe for chemically bonding the metal organic framework material layer is a rough surface corroded by aqua regia.
The sampler is characterized by further comprising a sealing cap, wherein the sealing cap is arranged at the tail end of the sample injector outer tube.
The utility model discloses a stainless steel's push-and-pull rod is equipped with the organic skeleton material layer of one deck metal at the end of push-and-pull rod, forms the extraction probe, and the organic skeleton material layer of metal is used for carrying out solid phase microextraction, and the organic skeleton material layer of metal is chemical bonding on stainless steel push-and-pull rod's surface, is difficult for droing, and the extraction layer has better stability and life, simultaneously because extraction probe and push-and-pull rod are integrative, the cracked condition can not appear. When the device is used, the extraction probe is pushed out of the sample injector outer tube through the handle, so that the extraction probe is exposed in a sample to be detected, after the extraction balance is achieved, the extraction probe is pulled back into the sample injector outer tube through the handle, then the lower end of the sample injector outer tube is inserted into the gas chromatography sample inlet, and the extraction probe is pushed out again through the handle, so that the thermal analysis is carried out in the gasification chamber. And after the analysis is finished, the extraction probe is pulled back into the sample injector outer tube through the handle, and the sample injector outer tube is pulled out from the sample inlet, so that a complete solid-phase microextraction test process is completed. Wherein the push-pull rod can be replaced, and a new push-pull rod can be replaced for repeated use after use.
The utility model discloses simple structure, low cost, the extraction layer is stable difficult for droing, and the extraction probe can not split, is applicable to solid phase micro-extraction process.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a main body; 2. a push-pull rod; 3. an injector outer tube; 4. a handle; 5. extracting a probe; 6. and (7) sealing the cap.
Detailed Description
As shown in fig. 1, the utility model discloses a main part 1, it has injector outer tube 3 to cross-under in main part 1, injector outer tube 3 runs through main part 1, and outside injector outer tube 3's end stretches out main part 1, there is stainless steel's push-and-pull rod 2 at injector outer tube 3's inner chamber cross-under, the last port that stretches out injector outer tube 3 in push-and-pull rod 2's upper end and be equipped with handle 4, the tip of push-and-pull rod 2 is extraction probe 5, be equipped with the metal organic framework material layer at extraction probe 5's outer wall.
The metal organic framework material layer is formed through chemical bonding, and the thickness of the metal organic framework material layer is 30-40 micrometers. In order to firmly bond the metal organic framework material layer on the surface of the stainless steel, the outer surface is corroded by aqua regia to form a rough surface before the metal organic framework material layer is chemically bonded on the extraction probe 5, and polydopamine can be modified on the rough surface. The treated stainless steel surface is firmly combined with the metal organic framework material layer, so that falling off is avoided.
The diameter of the upper half part of the inner cavity of the sample injector outer tube 3 is smaller than that of the lower half part of the inner cavity, and the upper half part of the inner cavity of the sample injector outer tube 3 is in sliding fit with the outer wall of the push-pull rod 2. The push-pull rod 2 can be driven to move up and down in the sample injector outer tube 3 through the push-pull handle 4.
The end of the sample injector outer tube 3 is in a sharp head shape to form a needle head so as to be inserted into a sample inlet of the gas chromatography. Be provided with the closing cap 6 at the end of injector outer tube 3, closing cap 6 is used for sealing the end of injector outer tube 3, and closing cap 6 generally adopts the silica gel material.
The utility model discloses a stainless steel's push-and-pull rod 2, there is one deck metal organic framework material layer at the terminal chemical bonding of push-and-pull rod 2, make the end of push-and-pull rod 2 form extraction probe 5, the metal organic framework material layer is used for carrying out solid phase microextraction, because the metal organic framework material layer is the surface of chemical bonding at stainless steel material push-and-pull rod 2, be difficult for droing, the extraction layer has better stability and life, extraction probe 5 is the partly on stainless steel material push-and-pull rod 2 simultaneously, the cracked condition can not appear in push-and-pull rod 2 or extraction probe 5 when using.
When the device is used, the extraction probe 5 is pushed out of the sample injector outer tube 3 through the handle 4, so that the extraction probe 5 is exposed in a northern sample, after the extraction balance is achieved, the extraction probe 5 is pulled back into the sample injector outer tube 3 through the handle 4, then the lower end of the sample injector outer tube 3 is inserted into a gas chromatography sample inlet, and the extraction probe 5 is pushed out again through the handle 4, so that the thermal desorption is carried out in the gasification chamber. After the analysis is finished, the extraction probe 5 is pulled back into the sample injector outer tube 3 through the handle 4, and the sample injector outer tube 3 is pulled out from the sample inlet, so that a complete solid phase microextraction test process is completed. Wherein the push-pull rod 2 can be replaced, and a new push-pull rod 2 can be replaced for repeated use after use.
Claims (4)
1. The metal organic framework solid phase micro-extraction device is characterized by comprising a main body, wherein a sample injector outer tube penetrates through the main body, the sample injector outer tube penetrates through the main body, the tail end of the sample injector outer tube extends out of the main body, a push-pull rod made of stainless steel is connected in the inner cavity of the sample injector outer tube in a penetrating manner, the upper end of the push-pull rod extends out of the upper port of the sample injector outer tube and is provided with a handle, the tail end part of the push-pull rod is provided with an extraction probe, the outer wall of the extraction probe is provided with a metal organic framework material layer which is formed by chemical bonding, the thickness of the metal organic framework material layer is 30-40 microns, the diameter of the upper half portion of the inner cavity of the sample injector outer tube is smaller than that of the lower half portion of the inner cavity, and the upper half portion of the inner cavity of the sample injector outer tube is in sliding fit with the outer wall of the push-pull rod.
2. The metal organic framework solid phase microextraction device according to claim 1, wherein the end of the sample injector outer tube is pointed.
3. The metal-organic framework solid-phase microextraction device according to claim 1, wherein the outer surface of said extraction probe for chemically bonding said metal-organic framework material layer is a rough surface corroded by aqua regia.
4. The metal-organic framework solid phase microextraction device according to claim 1, further comprising a sealing cap, wherein the sealing cap is arranged at the end of the sample injector outer tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020578910.9U CN212941579U (en) | 2020-04-17 | 2020-04-17 | Metal organic framework solid phase micro-extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020578910.9U CN212941579U (en) | 2020-04-17 | 2020-04-17 | Metal organic framework solid phase micro-extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212941579U true CN212941579U (en) | 2021-04-13 |
Family
ID=75341552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020578910.9U Active CN212941579U (en) | 2020-04-17 | 2020-04-17 | Metal organic framework solid phase micro-extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212941579U (en) |
-
2020
- 2020-04-17 CN CN202020578910.9U patent/CN212941579U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101912769B (en) | Extraction head detachable type solid phase micro extraction probe and preparation method thereof | |
| CN212941579U (en) | Metal organic framework solid phase micro-extraction device | |
| CN110824076B (en) | Solid phase micro-extraction swab device and method | |
| CN112051341A (en) | Liquid phase mass spectrum sampling and electrospray combined device | |
| CN206648999U (en) | A kind of device suitable for surface plate original position SPME measure | |
| CN202096788U (en) | Solid-phase micro-extraction device | |
| CN203379635U (en) | Solid-phase microextraction device | |
| CN108435138A (en) | The solid-phase micro-extracting device prepared using the N that MOFs the is precursor synthesis carbon nanotube coatings adulterated and application | |
| CN104391063A (en) | New purpose of miniature-needle trapping device | |
| JP2007205867A (en) | Fiber-filled needle for analysis of aldehydes and ketones and analyzing apparatus and method | |
| CN109781898A (en) | A kind of sulfur tetrafluoride analyzer | |
| CN2455328Y (en) | Simple solid phase micro-extractor | |
| CN211042855U (en) | Closed storage slow-release micro-atmosphere collection device | |
| CN204723071U (en) | Trace peripheral blood collecting tube | |
| CN103316505B (en) | Solid-phase micro extraction device and using method of device | |
| CN203417490U (en) | Integrated solid-phase microextraction probe | |
| CN103071473A (en) | Preparation method for solid phase microextraction recognizable adsorption coating | |
| CN102688749A (en) | Extraction material and preparation method thereof, and device and extraction method used for solid-phase micro-extraction | |
| CN2584265Y (en) | Solid phase micro-extraction device | |
| CN2887401Y (en) | Solid phase micro extraction and resolution device | |
| CN206593939U (en) | A kind of device suitable for SPME in-site detecting | |
| CN206114371U (en) | Storage device is discharged to portable gaseous collection | |
| CN214794633U (en) | Pneumatic solid phase micro-extraction chromatography on-line sequence analysis equipment | |
| CN201096675Y (en) | Continuous fluid-solid phase micro extraction device | |
| CN108593370A (en) | The bleeder sample bottle and its application process measured for carbon stable isotope in carbon dioxide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |