CN202145203U - Solid phase extraction device - Google Patents
Solid phase extraction device Download PDFInfo
- Publication number
- CN202145203U CN202145203U CN201120208520U CN201120208520U CN202145203U CN 202145203 U CN202145203 U CN 202145203U CN 201120208520 U CN201120208520 U CN 201120208520U CN 201120208520 U CN201120208520 U CN 201120208520U CN 202145203 U CN202145203 U CN 202145203U
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- phase extraction
- solid
- hollow sleeve
- vacuum tank
- extraction device
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- Sampling And Sample Adjustment (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The utility model discloses a solid phase extraction device comprising a hollow sleeve, wherein one end of the hollow sleeve is movably connected to a solid phase extraction column, while the other end thereof extends into a test tube within a vacuum box. With such a structure, cross contamination at the through hole of the box cover of the vacuum box which is caused by replacing different solid phase extraction columns can be prevented; the accuracy of the solid phase extraction is improved; and the accuracy of the final liquid phase chromatographic detection is improved.
Description
Technical field
The utility model relates to a kind of chemical analysis instrument, more specifically relates to a kind of solid-phase extraction device.
Background technology
(Solid-Phase Extraction SPE) is a kind of sample pretreatment technology that the eighties grows up mid-term, by the development that combines of liquid-solid extraction and liquid chromatography technology, is mainly used in separation, the purifying and concentrated of sample in SPE.Compare with the traditional ones method and can improve the recovery of analyte, more effectively analyte is separated with interfering component, reduce the sample pretreatment process, simple to operate, save time, laborsaving.Be applied in fields such as medicine, food, environment, commodity inspection, chemical industry widely.At present, in sample analysis, pre-service is a crucial step.The direct impact analysis result of the effect of sample pretreatment accurately whether.SPE is the principle that adopts selective adsorption to separate with the liquid chromatography of selective elution.Way commonly used is to make fluid sample pass through adsorption stuffing; Keep target components wherein; The solvent washing of selecting suitable intensity again for use is used a spot of good solvent wash-out target components then to remove interfering component, thus the purpose that reaches quick separation, purifies and concentrate; Also can select the selective adsorption interfering component for use, and let target components flow out; Or while adsorptive hindrance component and target components, re-use suitable solvent selectivity wash-out target components.Following operation is adopted in general SPE: activation-upward appearance-drip washing-wash-out.
The main body of solid-phase extraction device of the prior art is a bubble-tight casing, and the casing side is provided with the exhausr port that is connected with vacuum pump, covers on it to be provided with a socket hole, in jack, inserts solid-phase extraction column.Under solid-phase extraction column, be provided with simultaneously test tube or similar liquid gathering-device to collect the liquid that from solid-phase extraction column, flows out.Casing is evacuated, and the top splashes into leacheate from extraction column, and the extract that drip washing is got off can be collected in the below.
Contact but have directly between through hole in actual application between solid-phase extraction column and the vacuum tank cover plate and the hole wall, thereby cause the junction of solid-phase extraction column and through hole to have residue.When in same through hole, inserting different extraction column, cross pollution will take place, thereby cause the resulting extract of final SPE to be polluted, thereby have influence on the accuracy of final liquid chromatographic detection.Therefore necessity is further improved existing SPE treating apparatus, to prevent improving the degree of accuracy of SPE because of changing the cross pollution that solid-phase extraction column causes.
The utility model content
The purpose of the utility model is to provide a kind of solid-phase extraction device, in the joint portion of pillar and vacuum tank cover plate through hole cross pollution takes place when it can prevent because of the replacing solid-phase extraction column.
For realizing above-mentioned purpose; The utility model provides a kind of solid-phase extraction device; Comprise: solid-phase extraction column, vacuum tank casing, vacuum tank cover plate, pump-line, test tube, vacuum pump; Said solid-phase extraction device also comprises: hollow sleeve, the movable connection solid-phase extraction column of one of which end, the other end extend in the test tube in the vacuum tank.
As the further improvement of the utility model, said hollow sleeve is connected in the through hole of vacuum tank case lid movably.
As the further improvement of the utility model, a said hollow sleeve both ends open and an end are taper.
As the further improvement of the utility model, an end of said hollow sleeve is arranged at vacuum tank casing outside and flexibly connects the column cap of solid-phase extraction column.
As the further improvement of the utility model, the other end of the said hollow sleeve opposite with being connected the solid-phase extraction column column cap extends in the vacuum tank box house test tube and is contactless with test tube.
As the further improvement of the utility model, radially draw in an end end that extends into test tube of said hollow sleeve.
Compared with prior art, a kind of solid-phase extraction device of the utility model adopts hollow sleeve to connect solid-phase extraction column and vacuum tank case lid, and hollow sleeve one end connects the column cap of pillar, and an end extends in the test tube in the vacuum tank.Only need during use hollow sleeve is inserted in the vacuum tank cover plate and stretches in the test tube, in other end through hole, insert solid-phase extraction column.When second kind of sample of extraction, only need hollow sleeve is extracted and cleaned, and need whole vacuum tank cover plate not taken off cleaning, and the vacuum tank cover plate is relatively heavier, cleans also inconvenient.Through the effect that cross pollution takes place when a hollow sleeve can reality prevent to change different solid-phase extraction column is being set between solid-phase extraction column and the vacuum tank, and this structure realize simple, cost is low, easy to use.
Description of drawings
Accompanying drawing is used to provide the further understanding to the utility model, is used to explain the utility model with each embodiment of the utility model, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the stereographic map of solid-phase extraction device in first kind of embodiment;
Fig. 2 is the A-A cut-open view that solid-phase extraction device connects extraction column and hollow sleeve in first kind of embodiment.
Embodiment
Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.
Stereographic map with reference to the solid-phase extraction device in the utility model one embodiment shown in Figure 1.Solid-phase extraction column is in liquid phase chromatography detection method, to be used for target compound or component is separated, a kind of device of purification and enrichment, adopts medical grade polypropylene or glass to process usually.The one of which end is a charge door, and sample is put into from charge door; The other end is narrow meshed column cap, and column cap inserts in the end port of hollow sleeve, and the other end of hollow sleeve inserts in the through hole of the good cover plate of vacuum tank impermeability, and extends in the test tube that is provided with in the vacuum tank, and guarantees that hollow sleeve and test tube are contactless.Some test tubes are set in vacuum tank usually, and the opening of test tube is corresponding with the column cap of extraction column, with the liquid of admitting pillar to flow out.One side of vacuum tank is typically provided with a pipeline can connect vacuum pump.Just in casing, forming negative pressure behind the air of vacuum pump in having extracted casing makes sample fast through SPE (Solid-Phase Extraction; SPE) filler; Utilize solid phase extraction filler that the target components in the sample is adsorbed; The target components of sample is separated with interfering component, utilize the eluent wash-out to be adsorbed on the target components in the filler then, reach the purpose of separation and enrichment target components.
Cut-open view with reference to the solid-phase extraction device in one embodiment of utility model shown in the accompanying drawing 2.In this embodiment, a kind of solid-phase extraction device, it comprises solid-phase extraction column 10, vacuum tank casing 40, vacuum tank cover plate 30, pump-line 60, test tube 50, vacuum pump 70, hollow sleeve 20.The movable connection solid-phase extraction column 10 of hollow sleeve 20 1 ends, the other end extend in the test tube 50 in the vacuum tank 40.Hollow sleeve 20 both ends opens are connected in the exhausting hole 31 of vacuum tank case lid 30 movably, and the pipe diameter that is positioned at vacuum tank cover plate 30 upper sections of hollow sleeve 20 is greater than the internal diameter of through hole 31.One end 21 of hollow sleeve 20 is arranged at vacuum tank casing 40 outside and the movable and tight outer side surfaces 12 that connect the solid-phase extraction column column cap.The other end 25 that connects the opposite hollow sleeve of solid-phase extraction column column cap 15 extends in the vacuum tank casing 40 inner test tubes 50 and is contactless with test tube 50.The end 25a of an end 25 that extends into test tube of hollow sleeve 20 radially draws in.
Owing between solid-phase extraction column and vacuum tank case lid, be provided with a hollow sleeve in the connection procedure; Make sample in the SPE processing procedure; Avoided solid-phase extraction column to contact effectively, avoided the cross pollution between the different solid-phase extraction columns with the direct of vacuum case lid.Hollow sleeve one end directly extends in the test tube in addition, the cross pollution when further having avoided many solid-phase extraction columns to extract simultaneously.Thereby improve the effect and the degree of accuracy of SPE.And this structure realizes simple, convenience for washing, respond well.
Be to be understood that; Though this instructions is described according to embodiment; But be not that each embodiment only comprises an independently technical scheme, this narrating mode of instructions only is for clarity sake, and those skilled in the art should make instructions as a whole; Technical scheme among each embodiment also can form other embodiments that it will be appreciated by those skilled in the art that through appropriate combination.
The listed a series of detailed description of preceding text only is specifying to the feasibility embodiment of the utility model; They are not the protection domain in order to restriction the utility model, allly do not break away from equivalent embodiment or the change that the utility model skill spirit done and all should be included within the protection domain of the utility model.
Claims (6)
1. solid-phase extraction device, comprising: solid-phase extraction column, vacuum tank casing, vacuum tank cover plate, pump-line, test tube, vacuum pump is characterized in that this solid-phase extraction device also comprises:
Hollow sleeve, the movable connection solid-phase extraction column of one of which end, the other end extend in the test tube in the vacuum tank.
2. solid-phase extraction device according to claim 1 is characterized in that: said hollow sleeve is connected in the through hole of vacuum tank case lid movably.
3. solid-phase extraction device according to claim 2 is characterized in that, a said hollow sleeve both ends open and an end are taper.
4. solid-phase extraction device according to claim 1 is characterized in that: an end of said hollow sleeve is arranged at vacuum tank casing outside and flexibly connects the column cap of solid-phase extraction column.
5. solid-phase extraction device according to claim 1 is characterized in that: the other end of the said hollow sleeve opposite with being connected the solid-phase extraction column column cap extends in the vacuum tank box house test tube and is contactless with test tube.
6. solid-phase extraction device according to claim 4 is characterized in that: radially draw in an end end that extends into test tube of said hollow sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120208520U CN202145203U (en) | 2011-06-20 | 2011-06-20 | Solid phase extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120208520U CN202145203U (en) | 2011-06-20 | 2011-06-20 | Solid phase extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202145203U true CN202145203U (en) | 2012-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120208520U Expired - Lifetime CN202145203U (en) | 2011-06-20 | 2011-06-20 | Solid phase extraction device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202145203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836571A (en) * | 2011-06-20 | 2012-12-26 | 苏州赛分科技有限公司 | Solid-phase extraction apparatus |
| CN109806618A (en) * | 2019-04-03 | 2019-05-28 | 四川轻化工大学 | Integrated adjustable multi-channel solid phase extraction device and use method thereof |
-
2011
- 2011-06-20 CN CN201120208520U patent/CN202145203U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102836571A (en) * | 2011-06-20 | 2012-12-26 | 苏州赛分科技有限公司 | Solid-phase extraction apparatus |
| CN109806618A (en) * | 2019-04-03 | 2019-05-28 | 四川轻化工大学 | Integrated adjustable multi-channel solid phase extraction device and use method thereof |
| CN109806618B (en) * | 2019-04-03 | 2021-06-29 | 四川轻化工大学 | Integrated adjustable multi-channel solid phase extraction device and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120215 |
|
| CX01 | Expiry of patent term |