CN205127997U - Dispersion liquid phase centrifuging tube for micro -extraction - Google Patents
Dispersion liquid phase centrifuging tube for micro -extraction Download PDFInfo
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- CN205127997U CN205127997U CN201520923725.8U CN201520923725U CN205127997U CN 205127997 U CN205127997 U CN 205127997U CN 201520923725 U CN201520923725 U CN 201520923725U CN 205127997 U CN205127997 U CN 205127997U
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- lid
- liquid
- pipe
- buckle closure
- described body
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Abstract
The utility model belongs to the technical field of chemistry separator technique and specifically relates to relating to centrifugal separation device technical field, specifically disclosing a dispersion liquid phase centrifuging tube for micro -extraction, it includes transparent pipe body, the upper portion and the bottom opening of body, the bottom mouth of pipe department of body is equipped with the buckle closure, the buckle closure includes the lid, the area of lid is greater than the bottom mouth of pipe area of body, the inboard fixed surface of lid is equipped with the banded card body of elasticity annular, the buckle closure is through the embedding of the card body the bottom mouth of pipe of body can be right the bottom mouth of pipe of body is sealed, the lid is transparent silica gel. The utility model is used for dispersion liquid phase micro -extraction technique can make things convenient for, the sedimentary facies is awaited measuring in simple, quick absorption, need not get rid of the impurity intermediate level during sample, can not lead to the fact the pollution to the sample, can guarantee that the test is accurate.
Description
Technical field
The utility model relates to chemical separating arrangement technology technical field, especially relates to centrifugal separating device technical field.
Background technology
Dispersive liquid-liquid microextraction (DLLME) is a kind of novel sample pretreatment that development in recent years is got up, being equivalent to microminiaturized liquid-liquid extraction, is the process that based target analyzes thing equilibrium assignmen between the extractant and dispersant of sample solution and small size.In DLLME operating process, first in sample solution, add extractant and dispersant, then vibration is mixed to formation emulsion, after centrifugal layering, take out extractant direct injection analysis with microsyringe.This technology have simple to operate, quick, bioaccumulation efficiency is high, environmentally friendly, low cost and other advantages, in analytical chemistry field, especially food inspection and clinical medicine application experiment, be with a wide range of applications.
When carrying out dispersive liquid-liquid microextraction, usually adopt common centrifuge tube, the simple glass centrifuge tube of such as 10ml.This centrifuge tube entire body is all made up of glass, when testing, needs from centrifuge tube suitable for reading, reaches bottom centrifuge tube sample with sampler.But, when analyzing some more complicated samples, as fruits and vegetables, meat, soil, thickness nutrient solution etc., impurity intermediate layer (deposit that the impurity such as fat, pigment, albumen is mixed together with extractant) can be there is in processing procedure, between sedimentary facies and upper phase, if sedimentary facies drawn by direct sampler, then syringe needle may be blocked, impact sampling.Therefore first must remove intermediate layer before sampling, but prior art is removed process complexity in impurity intermediate layer, poor reliability, is caused interference to sampling or test, impact mensuration.Such as, impurity is introduced when some method removes impurity intermediate layer to sedimentary facies; Component to be measured can be adsorbed when some method removes impurity intermediate layer, reduce constituent content to be measured.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of dispersive liquid-liquid microextraction centrifuge tube, can facilitate for dispersive liquid-liquid microextraction, draw sedimentary facies to be measured simply, fast, do not need during sampling to remove impurity intermediate layer, can not pollute sampling, can ensure that test accurately.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of dispersive liquid-liquid microextraction centrifuge tube, it comprises transparent tube body, the top of described body and bottom opening, the mouth of pipe place, bottom of described body is provided with buckle closure, described buckle closure comprises lid and is fixed on the elastic annular card inside described lid, and the area of described lid is greater than the lower tube open area of described body; The bottom mouth of pipe that elastic annular card inside described lid embeds described body makes buckle closure can to the bottom ferrule of described body, and described lid is transparent silica gel.
Further, described body is with scale.
Further, the bottom tube wall of described body to the uniform convergence of its bottom center position, conically.
Further, described body material is glass.
Further, the upper orifice place of described body is provided with glass piston, for closing the upper orifice of described body.
Further, described card is centroclinal to described lid, is certain inclination angle, out of plumb with described lid.
Application the utility model centrifuge tube, when dispersive liquid-liquid microextraction, only needs with sampling probe, the silica gel lid at its bottom mouth of pipe place to be punctured absorption sedimentary facies after centrifugation.
The beneficial effect adopting technique scheme to produce is:
(1) dispersive liquid-liquid microextraction is now widely used in fruits and vegetables, meat, soil, thickness nutrient solutions etc. are analyzed in the pre-treatment of thing, this kind of material composition is complicated, a large amount of impurity intermediate layer can be produced after it is by organic solvent (as chloroform) extraction, if remove precipitation with adsorbent specially, complex steps, ingredient adsorption to be measured in sample also can fall by adsorbent simultaneously, causes the mistake of measurement result, uses the utility model centrifuge tube can dispense this process of removal of impurity intermediate layer, make experimentation easy, reduce resultant error.
(2) although some impurity intermediate layer adsorbent also cannot be removed thoroughly, as long as carry out micro-extraction, also there will be impurity intermediate layer, still affect mensuration.Conventional method samples, and impurity intermediate layer material probably blocks sampler, damages instrument, uses the utility model centrifuge tube, can solve the problem that impurity intermediate layer cannot remove, and avoids its blocking sampler, damages instrument.
(3) the utility model centrifuge tube is in the sampling of its bottom mouth of pipe place, avoids the pollution of non-deposited relative deposition phase, ensures test accuracy.
(4) silica gel lid has good elastic deformation, and the silica gel lid punctured can automatically recover after pulling out pin, repeatedly can use, environmental protection, reduce use cost further.
(5) silica gel lid and centrifuge tube body are for removably connecting, and can change spare part after damage, can Emergency use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the structural representation of a kind of embodiment of the utility model buckle closure.
Wherein, 1, piston; 2, body; 3, the bottom of body; 4, buckle closure; 41, lid; 42, card.
Detailed description of the invention
In order to clearly the utility model can be described, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of dispersive liquid-liquid microextraction centrifuge tube, it comprises transparent tube body 2, the top of body 2 and bottom opening, the mouth of pipe place, bottom of body 2 is provided with buckle closure 4, buckle closure 4 comprises lid 41, the area of lid 41 is greater than the lower tube open area of body 2, and the inner surface of lid 41 is fixed with the banded card 42 of elastic ring; The bottom mouth of pipe that the card 42 of buckle closure 4 embeds body 2 makes buckle closure 4 can to the bottom ferrule of body 2, lid 41 be transparent silica gel body 2 outer wall with scale, sample volume in convenient amount test tube body 2, increases work efficiency.
Lid 41 and card 42 preferably adopt Integral design.
The bottom 3 of body adopts the inverted conical body of bottom opening to construct, and the bottom 3 of body, to the direction uniform convergence of body 2 bottom centre, is beneficial to the accumulation of sedimentary facies, facilitates subsequent samples.
Body 2 material can select the centrifuge tube material commonly used as polyethylene (PE), Merlon (PC), polypropylene (PP) etc., and be preferably glass, it is minimum to the interference of sample organic phase.
For avoiding external contamination, easy to use, the upper orifice place of body 2 is provided with glass piston 1, for the upper orifice of closed tube 2.
To the further improvement of the technical program, card 42 is centroclinal to lid 41, is certain inclination angle, out of plumb with lid 41.The inclination angle of inclined design and body 2 bottom cone is close, can either facilitate the installation of buckle closure 4, ensures seal, can ensure that again card 42 and mouth of pipe place, bottom tube wall are fitted closely, and when preventing from sampling, sample retains.
In the process adopting dispersive liquid-liquid microextraction operation, add appropriate dispersant and extractant in the utility model centrifuge tube with liquid-transfering gun, mix, then add sample solution, fully shake, mix.Centrifuge tube is put into centrifuge centrifugal, be divided into sedimentary facies, upper phase and impurity intermediate layer (deposit that the impurity such as fat, pigment, albumen is mixed together with extractant) three layers after centrifugal, a small amount of sedimentary facies of general analysis lower floor.During sampling, only need to puncture buckle closure with sampler, draw lower floor's sedimentary facies, avoid the interference in impurity intermediate layer between sedimentary facies and upper phase, and this special substance of employing silica gel, sampler syringe needle is extracted rear silica gel buckle closure and can automatically be restored.
Claims (6)
1. a dispersive liquid-liquid microextraction centrifuge tube, it comprises transparent tube body (2), the top of described body (2) and bottom opening, it is characterized in that: the mouth of pipe place, bottom of described body (2) is provided with buckle closure (4), described buckle closure (4) comprises lid (41) and is fixed on the elastic annular card (42) of described lid (41) inner side, and the area of described lid (41) is greater than the lower tube open area of described body (2); The bottom mouth of pipe that the elastic annular card (42) of described lid (41) inner side embeds described body (2) makes buckle closure (4) can to the bottom ferrule of described body (2), and described lid (41) is transparent silica gel.
2. a kind of dispersive liquid-liquid microextraction centrifuge tube according to claim 1, is characterized in that, described body (2) is with scale.
3. a kind of dispersive liquid-liquid microextraction centrifuge tube according to claim 1, is characterized in that, bottom (3) tube wall of described body to the direction uniform convergence of body (2) bottom centre, conically.
4. a kind of dispersive liquid-liquid microextraction centrifuge tube according to claim 1, is characterized in that, described body (2) material is glass.
5. a kind of dispersive liquid-liquid microextraction centrifuge tube according to claim 4, is characterized in that, the upper orifice place of described body (2) is provided with glass piston (1), for closing the upper orifice of described body (2).
6. a kind of dispersive liquid-liquid microextraction centrifuge tube according to claim 1, is characterized in that, described card (42) is centroclinal to described lid (41), with described lid (41) in certain inclination angle, out of plumb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520923725.8U CN205127997U (en) | 2015-11-18 | 2015-11-18 | Dispersion liquid phase centrifuging tube for micro -extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520923725.8U CN205127997U (en) | 2015-11-18 | 2015-11-18 | Dispersion liquid phase centrifuging tube for micro -extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205127997U true CN205127997U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520923725.8U Expired - Fee Related CN205127997U (en) | 2015-11-18 | 2015-11-18 | Dispersion liquid phase centrifuging tube for micro -extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205127997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113018904A (en) * | 2021-03-16 | 2021-06-25 | 中国科学院地理科学与资源研究所 | Dispersion liquid-liquid micro-extraction device and method |
-
2015
- 2015-11-18 CN CN201520923725.8U patent/CN205127997U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113018904A (en) * | 2021-03-16 | 2021-06-25 | 中国科学院地理科学与资源研究所 | Dispersion liquid-liquid micro-extraction device and method |
| CN113018904B (en) * | 2021-03-16 | 2022-03-01 | 中国科学院地理科学与资源研究所 | Dispersion liquid-liquid micro-extraction device and method |
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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 |
Granted publication date: 20160406 Termination date: 20181118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |