CN201662565U - New air flow type micro-injector liquid phase micro-extraction device - Google Patents
New air flow type micro-injector liquid phase micro-extraction device Download PDFInfo
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- CN201662565U CN201662565U CN2010201655099U CN201020165509U CN201662565U CN 201662565 U CN201662565 U CN 201662565U CN 2010201655099 U CN2010201655099 U CN 2010201655099U CN 201020165509 U CN201020165509 U CN 201020165509U CN 201662565 U CN201662565 U CN 201662565U
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- condenser
- sample introduction
- introduction needle
- syringe
- chromatogram
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Abstract
The utility model relates to a new air flow type micro-injector liquid phase micro-extraction device, comprising a condenser, a chromatograph sample injection syringe, a chromatograph sample injection pin head, a heater and a fixing frame; the condenser is fixed on the fixing frame, the chromatograph sample injection syringe and the chromatograph sample injection pin head connected to the bottom part of the chromatograph sample injection syringe by a screw are inserted on the condenser, stainless steel wires are inserted on the chromatograph sample injection syringe, a thermal insulation sleeve is arranged at the lower side of the condenser, the heater with a sample sink is arranged in the thermal insulation sleeve, a sample pond is arranged in the sample sink, a polytetrafluoroethylene cover for sealing is covered on the sample sink, one end of the chromatograph sample injection pin head, connected to the chromatograph sample injection syringe by the screw, is arranged in the condenser, the other end thereof is inserted on the polytetrafluoroethylene cover, an inert gas channel runs through the side surfaces of the thermal insulation sleeve and the heater and penetrates through the top part of the sample pond in the sample sink. The new air flow type micro-injector liquid phase micro-extraction device has the advantages of high extraction efficiency, short extraction time, simple operation and being capable of quantitative analysis and the like.
Description
Technical field
The utility model relates to a kind of air-flowing type micro-syringe liquid-phase micro-extraction new equipment that collects extraction, separation, simmer down to one.
Background technology
In order to finish the detection of object, in recent years, instrumental analysis has obtained development rapidly, but most of analytical instrument is the sample of Analysis of Complex directly, so the sample pre-treatments technology (mainly comprise extraction, refining, concentrate etc.) become step necessary in the analytic process, particularly for the detection of trace in the complex environment sample/trace organic principle.Technology such as the robotization of the coupling of integrated, the multiple technologies of the rapid analytic process of multistep and integrated, pre-treatment process, former state total analysis are the research focuses in the sample pre-treatments technology, and are subjected to domestic and international researchers' great attention.At present, the headspace liquid-phase microextraction technology has application promise in clinical practice, but still there are many problems in this technology,, extraction time length low as extraction efficiency, operating difficulties, is difficult to realize the high temperature extraction, the most important thing is that this technology is incomplete abstraction technique, so be difficult to realize quantitative test.
Summary of the invention
The purpose of this utility model provide in order to overcome the deficiencies in the prior art a kind of extract the time short, simple to operate, quantitative test is easy, can extract under higher temperature, can separate fast simultaneously and the air-flowing type micro-syringe liquid-phase micro-extraction new equipment of enrichment volatility half volatile organic principle fully.
To achieve these goals, the technical scheme that the utility model adopted is as follows:
Air-flowing type micro-syringe liquid-phase micro-extraction new equipment of the present utility model, comprise condenser, the chromatogram sample introduction needle that constitutes by chromatogram sample introduction needle syringe and chromatogram sample introduction needle syringe needle, well heater and fixed mount, wherein, be fixed with condenser on the described fixed mount, be inserted with the chromatogram sample introduction needle on the described condenser, described chromatogram sample introduction needle is to be connected in chromatogram sample introduction needle syringe bottom and to be formed by chromatogram sample introduction needle syringe needle screw, be inserted with stainless steel wire on the described chromatogram sample introduction needle syringe, described condenser downside, the muff that is provided with separated by a distance, be equipped with in the described muff and be provided with sample cell, and with the corresponding well heater of described condenser, be placed with sample cell in the described sample cell, being stamped sealing on the described sample cell covers with teflon, the end that the screw of described chromatogram sample introduction needle syringe needle is connected in chromatogram sample introduction needle syringe places in the condenser, the other end is inserted in described teflon and covers, the side of described muff and well heater is penetrated with the inert gas passage, and is through to the sample cell top in the sample cell.
Described inert gas passage is provided with mass flow controller and valve.
Described condenser is fixed on the fixed mount by clip.
The utility model improves existing liquid-phase micro-extraction device, designs, makes and disclose air-flowing type micro-syringe liquid-phase micro-extraction new equipment.In order to realize the high temperature extraction of headspace liquid-phase microextraction technology, extraction solvent is placed in the syringe of chromatogram sample introduction needle, the syringe needle that utilizes the chromatogram sample introduction needle separates the high temperature system of extraction solvent and sample cell, and then guarantees that extraction solvent exists with liquid form.In addition, by condensation to chromatogram sample introduction needle in the condenser, reduce the loss of extraction solvent, by heating to sample substrate in the well heater, increase the speed that object spreads in gas phase,, increase the movement velocity of object by flowing of inert gas, and then reduce the extraction time, improve percentage extraction.The utility model discloses a kind of extraction equipment of realizing the novelty that the headspace liquid-phase microextraction technology extracts fully, this device plays crucial effects in on-line analysis, automated analysis and the express-analysis of trace, micro-organic principle, this device has wide practical use in the on-line analysis out of doors simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model air-flowing type micro-syringe liquid-phase micro-extraction new equipment.
Among the figure, 1, fixed mount, 2, stainless steel wire, 3, chromatogram sample introduction needle syringe, 4, clip, 5, condenser, 6, extraction solvent, 7, chromatogram sample introduction needle syringe needle, 8, well heater, 9, sample cell, 10, sample cell, 11, muff, 12, inert gas passage, 13, mass flow controller, 14, the teflon lid, 15, valve, 16, the circulating condensing water inlet, 17, the circulating condensing water out.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1, the utility model air-flowing type micro-syringe liquid-phase micro-extraction new equipment, comprise condenser 5, the chromatogram sample introduction needle that constitutes by chromatogram sample introduction needle syringe 3 and chromatogram sample introduction needle syringe needle 7, well heater 8 and fixed mount 1, wherein, be fixed with condenser 5 by clip 4 on the described fixed mount 1, one side of described condenser 5 is provided with circulating condensing water inlet 16 and circulating condensing water out 17, be inserted with the chromatogram sample introduction needle on the described condenser 5, described chromatogram sample introduction needle is that chromatogram sample introduction needle syringe needle 7 screws are connected in described chromatogram sample introduction needle syringe 3 bottoms and form, be inserted with stainless steel wire 2 on the described chromatogram sample introduction needle syringe 3, described condenser 5 downsides, and the muff 11 that is provided with separated by a distance, be equipped with in the described muff and be provided with sample cell 9, and with described condenser 5 corresponding well heaters 8, be placed with sample cell 10 in the described sample cell 9, be stamped sealing on the described sample cell 9 and cover 14 with teflon, the end that the screw of described chromatogram sample introduction needle syringe needle 7 is connected in chromatogram sample introduction needle syringe 3 passes condenser 5 bottoms and places in the condenser 5, the other end is inserted on the described teflon lid 14, the side of described muff 11 and well heater 8 is penetrated with inert gas passage 12, and being through to sample cell 10 tops in the sample cell 9, described inert gas passage 12 is provided with mass flow controller 13 and valve 15.
Concrete enrichment method is as follows:
Chromatogram sample introduction needle part: chromatogram sample introduction needle syringe 3 and chromatogram sample introduction needle syringe needle 7 screws are connected to form the chromatogram sample introduction needle.
Heating part: quantity of sample is put into sample cell 10, again the sample cell 10 that sample is housed is put into sample cell 9, the side of described well heater 8 is penetrated with the inert gas passage 12 that is provided with mass flow controller 13 and valve 15, and described inert gas passage 12 is through to sample cell 10 tops in the sample cell 9.Extract before in order to guarantee the original structure of composition, the valve of opening earlier on the inert gas passage 12 15 feeds inert gas in sample cell 9, make total system be in the atmosphere of inert gas, feed after a period of time, cover teflon and cover 14 sealed sample grooves 9, described chromatogram sample introduction needle syringe needle 7 is separated from each other the sample cell 9 of extraction solvent 6 and well heater 8 inside, realizes the high temperature extraction of headspace liquid-phase microextraction technology.
Condensation portion: the upside at described well heater 8 utilizes clip 4 that condenser 5 is fixed on the fixed mount 1, and stainless steel wire 2 directly is inserted in the chromatogram sample introduction needle syringe 3.
Extraction part: utilize an other chromatogram sample introduction needle to suck after a certain amount of extraction solvent, extraction solvent is joined in the described chromatogram sample introduction needle syringe 3, open valve 15, well heater 8 and condenser 5 switches on the inert gas passage 12 simultaneously, promptly begin extraction.By reconciling the temperature of well heater 8, improve the volatile quantity of object, by reconciling the temperature of condenser 5, reduce the volatile quantity and the temperature of extraction solvent 6 in the chromatogram sample introduction needle syringe 3, and then improve accumulation rate object.After extraction finished, extraction is reported to the police, stopped to device automatically.
Claims (3)
1. air-flowing type micro-syringe liquid-phase micro-extraction new equipment, it comprises condenser (5), chromatogram sample introduction needle by chromatogram sample introduction needle syringe (3) and chromatogram sample introduction needle syringe needle (7) formation, well heater (8) and fixed mount (1), it is characterized in that: be fixed with condenser (5) on the described fixed mount (1), described condenser is inserted with the chromatogram sample introduction needle on (5), described chromatogram sample introduction needle is that chromatogram sample introduction needle syringe needle (7) screw is connected in described chromatogram sample introduction needle syringe (3) bottom and forms, be inserted with stainless steel wire (2) on the described chromatogram sample introduction needle syringe (3), described condenser (5) downside, the muff (11) that is provided with separated by a distance, be equipped with in the described muff and be provided with sample cell (9), and with the corresponding well heater of described condenser (5) (8), be placed with sample cell (10) in the described sample cell (9), be stamped sealing on the described sample cell (9) and cover (14) with teflon, the end that the screw of described chromatogram sample introduction needle syringe needle (7) is connected in chromatogram sample introduction needle syringe (3) places in the condenser (5), the other end is inserted on the described teflon lid (14), the side of described muff (11) and well heater (8) is penetrated with inert gas passage (12), and is through to sample cell (10) top in the sample cell (9).
2. air-flowing type micro-syringe liquid-phase micro-extraction new equipment according to claim 1 is characterized in that: described inert gas passage (12) is provided with mass flow controller (13) and valve (15).
3. air-flowing type micro-syringe liquid-phase micro-extraction new equipment according to claim 1, it is characterized in that: described condenser (5) is fixed on (1) on the fixed mount by clip (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201655099U CN201662565U (en) | 2010-04-22 | 2010-04-22 | New air flow type micro-injector liquid phase micro-extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201655099U CN201662565U (en) | 2010-04-22 | 2010-04-22 | New air flow type micro-injector liquid phase micro-extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662565U true CN201662565U (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201655099U Expired - Fee Related CN201662565U (en) | 2010-04-22 | 2010-04-22 | New air flow type micro-injector liquid phase micro-extraction device |
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| CN (1) | CN201662565U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645492A (en) * | 2012-04-13 | 2012-08-22 | 延边大学 | Continuous gas liquid phase microextraction device in conjunction with gas chromatography |
| CN103675157A (en) * | 2013-09-18 | 2014-03-26 | 中国地质大学（武汉） | Rapid pre-treatment method and device for crude oil sample |
| CN107290189A (en) * | 2016-03-31 | 2017-10-24 | 庞英明 | A kind of portable multi-mode sampler |
| CN105911197B (en) * | 2016-05-25 | 2018-06-29 | 延边大学 | Automatic sample thermal desorption and liquid phase microemulsion preconcentrate device |
-
2010
- 2010-04-22 CN CN2010201655099U patent/CN201662565U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645492A (en) * | 2012-04-13 | 2012-08-22 | 延边大学 | Continuous gas liquid phase microextraction device in conjunction with gas chromatography |
| CN103675157A (en) * | 2013-09-18 | 2014-03-26 | 中国地质大学（武汉） | Rapid pre-treatment method and device for crude oil sample |
| CN103675157B (en) * | 2013-09-18 | 2015-10-14 | 中国地质大学（武汉） | A kind of quick pretreatment method of crude oil sample |
| CN107290189A (en) * | 2016-03-31 | 2017-10-24 | 庞英明 | A kind of portable multi-mode sampler |
| CN107290189B (en) * | 2016-03-31 | 2021-03-30 | 庞英明 | Portable multi-mode sampler |
| CN105911197B (en) * | 2016-05-25 | 2018-06-29 | 延边大学 | Automatic sample thermal desorption and liquid phase microemulsion preconcentrate device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20180422 |