CN2584265Y - Solid phase micro-extraction device - Google Patents
Solid phase micro-extraction device Download PDFInfo
- Publication number
- CN2584265Y CN2584265Y CN 02284044 CN02284044U CN2584265Y CN 2584265 Y CN2584265 Y CN 2584265Y CN 02284044 CN02284044 CN 02284044 CN 02284044 U CN02284044 U CN 02284044U CN 2584265 Y CN2584265 Y CN 2584265Y
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- Prior art keywords
- protective sleeve
- handle
- steel wire
- sleeve
- core wire
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Abstract
The utility model relates to a solid phase micro-extraction device which comprises an extraction head, a handle, an inner core steel wire and a protective sleeve, wherein one end of the inner core steel wire is fixedly connected with the handle, and the other end is coated with a covering layer to form the extraction head. The inner core steel wire is arranged in the protective sleeve, the handle is pulled, the inner core steel wire moves in the protective sleeve, and the extraction head stretches or retracts the protective sleeve. The utility model has the advantages of simple structure, low cost and low running cost. Compared with other techniques of sample preparation, the method has the advantages of simple and convenient operation, short analysis time, little sample demand, good reproduction quality, high durability, etc. The method does not require extraction solvent, and is especially suitable for field analysis.
Description
Technical field
The utility model relates to a kind of solid-phase micro-extracting device.
Background technology
Analytic sample composition more complicated and determinand content is lower must be through pre-pre-treatment, and just energy measurement microcomponent improves the accuracy and the sensitivity of measuring method.Traditional extracting process has tens kinds of distillation, absorption, centrifugal filtration, chromatography, soxhlet extraction, liquid-liquid extraction, SPEs etc.But they all have certain shortcoming, and for example quantity of solvent is excessive, the processing time is long, step is complicated, loses sample easily, produce error.SPME is the sample pretreatment technology of early 1990s development.Carried out developmental research first by Canadian Pawliszyn research group, good its application prospect of U.S. Supelco company was released commercial SPME device in 1993.This measure has caused great repercussion in the analytical chemistry field.Be a kind of in water sample the technology of extracting of organic compounds, in analysis, directly from sample, absorb, enter the vitreous silica fiber that scribbles one deck suitable stationary phase, when fiber inserts sample, part to be analyzed enters solid up to reaching balance from the sample parent, then this fiber is inserted in the gas-chromatography injector or HPLC interface can be removed the vaporizer of absorption, and these analysans are removed on post and adsorbed and analyze.Compare with other sample preparation technology, the SPME method has simple to operation, and analysis time is short, and the sample requirement is little, need not extractant, and favorable reproducibility is particularly suitable for advantages such as field assay.
At present, the device of commodity SPME/HPLC is expensive (one more than 3000 yuan on handle, extracting head is also wanted more than 1000 yuan) relatively, and kind is limited.In experimentation, interface is non-easily-consumed products, can use for a long time, and that extracting head is the consumption rate of running stores and experiment is bigger.
The utility model content
Problem to be solved in the utility model provides a kind of solid-phase micro-extracting device simple in structure, with low cost.
The technical scheme that the utility model provides is: a kind of solid-phase micro-extracting device; comprise extracting head, handle, interior core wire and protective sleeve; interior core wire one end and handle connect firmly; other end coating constitutes extracting head, interior core wire be located in the protective sleeve and in can making by the pulling handle core wire in protective sleeve, move and then extracting head stretched out or the protective sleeve of withdrawing.
The utility model also is provided with hollow draw-bar, and hollow draw-bar is sheathed on the protective sleeve, and an end and the handle of hollow draw-bar are fixedly connected.
One end and the handle of above-mentioned hollow draw-bar pass through thread connection.
The utility model also can be provided with the fixedly fixture of protective sleeve.
Above-mentioned protective sleeve is made up of inner sleeve and outer sleeve, and inner sleeve is installed in the fixture, and outer sleeve connects firmly on fixture by nut and sealing gasket.
Fixture of the present utility model is a glass infuser, is marked with scale on it.
The utility model is simple in structure, with low cost, and critical piece can adopt a waste and old microsyringe tube (syringe), and the coating of certain-length (extracting head) is placed on the inner core steel wire head, and can leave in the protective sleeve, in order to avoid pollute and fracture.During use, driving handle makes the coating steel wire stretch out protective sleeve, enters sample liquid.After the extraction regular hour, pulling handle piston comes back in the syringe needle extracting head.Can be inserted into the injector of gas-chromatography or the interface of liquid chromatogram easily subsequently, make the measured object desorb and carry out quantitative analysis.
With the coupling of liquid chromatogram interface by following to the operation of two kinds of pattern fiber inserting steps: one, dynamic mode: after extracting head enters desorption chamber, down interface immediately, separate the position of then valve being pulled inject
Inhale with the analysis of HPLC sample introduction and carry out simultaneously.The sample effect of the method commute wash-out is relatively good.Two, static schema: allow mobile phase or other strippants be full of desorption chamber in advance, extracting head is inserted SPME/HPLC interface (valve
Be in the load position), the driving handle piston enters desorption chamber by extracting head, static desorb, desorb finishes, and takes out SPME
Syringe needle, down interface is pulled the inject position with valve.The method is relatively good to the sample effect of difficult wash-out.
The utility model makes the sample pretreatment process greatly simplify, and has improved analysis speed, the sensitivity that has also improved method simultaneously.Device replaces with waste and old syringe, not only cheaply but also convenient, with little steel wire replacement quartz fibre, has overcome the problem that fiber head is easily crisp, easily broken, easily fall, and durable in use, reaches the effect of making a silk purse out of a sow's ear.The utility model can be used for fields such as environmental pollutant analysis, water quality and food inspection, biochemistry, organic agricultural chemicals.
Description of drawings
Accompanying drawing is an overall structure schematic diagram of the present utility model.
The specific embodiment
As shown in Figure 1, the utility model comprises extracting head 1, handle 8, interior core wire 2, protective sleeve and the fixing glass syringe (fixture) 6 of protective sleeve, interior core wire 2 one ends and handle 8 connect firmly, other end coating constitutes extracting head 1, interior core wire 2 be located in the protective sleeve and in can making by pulling handle 8 core wire 2 in protective sleeve, move and then extracting head 1 stretched out or the protective sleeve of withdrawing; Protective sleeve is made up of inner sleeve 9 and outer sleeve 3, and inner sleeve 9 is installed in the glass syringe 6, and outer sleeve 3 connects firmly on glass syringe 6 by nut 4 and sealing gasket 5.Be provided with hollow draw-bar 7, hollow draw-bar 7 is sheathed on the inner sleeve 9, and an end and the handle 8 of hollow draw-bar 7 pass through thread connection.
In order to protect fully contacting of extracting head and desorb alcove solution, and avoid damaging extracting head, therefore on glass syringe 6, be marked with the yardstick of scale to know that extracting head stretches into.
Coating of the present utility model is polymer coatings such as ppy (polypyrrole), Ludox, can use electro-plating method or adhesive method.Macromolecule solid phase coating by little Steel Wire Surface extracts and preenrichment the organic molecule in the sample.
Claims (6)
1. solid-phase micro-extracting device; comprise extracting head, handle; it is characterized in that: core wire and protective sleeve in being provided with; interior core wire one end and handle connect firmly; other end coating constitutes extracting head, interior core wire be located in the protective sleeve and in can making by the pulling handle core wire in protective sleeve, move and then extracting head stretched out or the protective sleeve of withdrawing.
2. device according to claim 1 is characterized in that: be provided with hollow draw-bar, hollow draw-bar is sheathed on the protective sleeve, and an end and the handle of hollow draw-bar are fixedly connected.
3. device according to claim 2 is characterized in that: an end and the handle of hollow draw-bar pass through thread connection.
4. according to claim 1 or 2 or 3 described devices, it is characterized in that: be provided with the fixedly fixture of protective sleeve.
5. device according to claim 4 is characterized in that: protective sleeve is made up of inner sleeve and outer sleeve, and inner sleeve is installed in the fixture, and outer sleeve connects firmly on fixture by nut and sealing gasket.
6. device according to claim 4 is characterized in that: fixture is a glass infuser, is marked with scale on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02284044 CN2584265Y (en) | 2002-11-04 | 2002-11-04 | Solid phase micro-extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02284044 CN2584265Y (en) | 2002-11-04 | 2002-11-04 | Solid phase micro-extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2584265Y true CN2584265Y (en) | 2003-11-05 |
Family
ID=33745490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02284044 Expired - Fee Related CN2584265Y (en) | 2002-11-04 | 2002-11-04 | Solid phase micro-extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2584265Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462124C (en) * | 2007-04-20 | 2009-02-18 | 厦门大学 | Micro extraction head in solid phase and fabricating method |
| CN101920130A (en) * | 2010-08-11 | 2010-12-22 | 苏州大学 | Sample loading device for column chromatography |
| CN102998399A (en) * | 2012-11-19 | 2013-03-27 | 中国科学院青岛生物能源与过程研究所 | Pretreatment device of fiber needle type sample |
| CN111855257A (en) * | 2020-07-20 | 2020-10-30 | 中山大学 | Solid phase micro-extraction handle suitable for laser fiber |
-
2002
- 2002-11-04 CN CN 02284044 patent/CN2584265Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462124C (en) * | 2007-04-20 | 2009-02-18 | 厦门大学 | Micro extraction head in solid phase and fabricating method |
| CN101920130A (en) * | 2010-08-11 | 2010-12-22 | 苏州大学 | Sample loading device for column chromatography |
| CN102998399A (en) * | 2012-11-19 | 2013-03-27 | 中国科学院青岛生物能源与过程研究所 | Pretreatment device of fiber needle type sample |
| CN111855257A (en) * | 2020-07-20 | 2020-10-30 | 中山大学 | Solid phase micro-extraction handle suitable for laser fiber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |