CN203874505U - Dispersion liquid-liquid micro-extraction device - Google Patents
Dispersion liquid-liquid micro-extraction device Download PDFInfo
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- CN203874505U CN203874505U CN201420245781.6U CN201420245781U CN203874505U CN 203874505 U CN203874505 U CN 203874505U CN 201420245781 U CN201420245781 U CN 201420245781U CN 203874505 U CN203874505 U CN 203874505U
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Abstract
The utility model discloses a dispersion liquid-liquid micro-extraction device which is used for dispersion liquid-liquid micro-extraction. The dispersion liquid-liquid micro-extraction device comprises a container (1), wherein two ends of the container (1) are respectively provided with a port (2), and each port (2) is respectively connected with a sealing lid (3). The utility model designs the special device for the dispersion liquid-liquid micro-extraction, two ends of the container are respectively provided with one port, and each port is respectively provided with the flexible sealing lid which can be penetrated by a needle and is free from needle blockage and liquid leakage, so that precipitates can be extracted by utilizing a syringe to nearby pass through the sealing lid according to the position of the precipitates in the container, the probability for extracting the water can be greatly reduced in comparison with that of the existing separation way, and the service life of a gas chromatography can be prolonged; the accuracy of the test data can be guaranteed; moreover, the ports are processed into a slender tubular shape and provided with scales, so that the quantity of extractant can be clearly observed.
Description
Technical field
The utility model patent relates to a kind of dispersion liquid-liquid micro-extraction device, belongs to use for laboratory equipment and experimental working technique technical field.
Background technology
Dispersive liquid-liquid microextraction (dispersive liquid-liquid microextraction, DLLME) is proposed in 2006 first by Rezaee etc.This technology adds dispersant and extractant in sample solution, and mixed liquor forms emulsion system layering after centrifugal of water-dispersant-extractant after light shaking, direct injection analysis after extractant is taken out.The method will be sampled, extract and concentrate in one, simple to operate, cost is low, bioaccumulation efficiency is high, required consumption of organic solvent is few, easily and gas-chromatography, the advantages such as liquid chromatograph coupling, it is a kind of eco-friendly liquid-phase micro-extraction new technology, be used widely in trace analysis field, because the density of the extractant that uses in conventional dispersion liquid-liquid current micro-extraction system need be larger than water, therefore extractant (containing object) is generally all in centrifuge tube bottom, seeing through at injection needle that the time operation of upper water solution extracting objects thing is improper a little will inspiration part moisture, the one, can cause damage to gas-chromatography instrument, the 2nd, cause the unstable of test data, cannot prepare quantitatively, its extraction process is shown in Fig. 1.
Summary of the invention
The technical problems to be solved in the utility model is, a kind of dispersion liquid-liquid micro-extraction device that can accurately extract extractant is provided, and can overcome the deficiencies in the prior art.
The technical solution of the utility model is: dispersion liquid-liquid micro-extraction device, it comprises container, is provided with port at the two ends of container, is connected with respectively seal cover on port.
Described seal cover is that syringe needle can pass and can not stop up the flexible sealing lid of syringe needle and leakage.
The port of the one or both ends of described container is elongated tubular product, and the diameter of its elongated tubular product is the 1/5-1/15 of container average diameter.
Design flow scale on the elongated tubular of port.
The method of utilizing said apparatus to carry out dispersion liquid-liquid micro-extraction is first sample solution added to both ends open and be provided with in the container of seal cover, then in the container of vertical placement, add the dispersant that contains extractant, form precipitation until its emulsification, after centrifugal, last according to sediment the position correspondence in container utilize needle tubing through seal cover, sediment to be extracted nearby.
Compared with the prior art, the utility model has designed a kind of special purpose device of dispersion liquid-liquid micro-extraction, it is all to offer port at the two ends of container, on port, be all furnished with syringe needle and can pass and can not stop up the flexible sealing lid of syringe needle and leakage, so in the end according to sediment, the position correspondence in container utilizes needle tubing through seal cover, sediment to be extracted nearby, so relatively existing separate mode can significantly reduce the probability that extracts moisture content, can increase the service life of gas-chromatography instrument; The accuracy of guaranteeing test data, is processed into elongated tubular product by port, and is provided with scale, the quantity of finding out extract that can be comparatively clear and definite.
Brief description of the drawings
Fig. 1 is existing dispersion liquid-liquid micro-extraction process drawing;
Fig. 2 is structural representation of the present utility model;
Fig. 3 utilizes the utility model to complete the procedure chart of dispersion liquid-liquid micro-extraction technique.
Detailed description of the invention
Embodiment 1, be illustrated in figure 2 the structural representation of dispersion liquid-liquid micro-extraction device, the container 1 of both ends open is made up of glass or plastics, the one or both ends of its port 2 are processed into elongated tubular product, the diameter of its elongated tubular product is the 1/5-1/15 of container average diameter, design flow scale on the elongated tubular of port 2 simultaneously, it in figure, is one end, for realizing the sealing of container, two ends at container 1 are provided with port, on port 2, be connected with respectively seal cover 3, because seal cover will complete the work of fluid injection or drawing liquid, its material of making seal cover 3 need meet syringe needle can pass and can not stop up the flexible sealing lid of syringe needle and leakage.
As shown in Figure 3, the method of utilizing this device to carry out dispersion liquid-liquid micro-extraction is first sample solution added to both ends open and be provided with in the container of seal cover, then in the container of vertical placement, add the dispersant that contains extractant, form precipitation until its emulsification, after centrifugal, last according to sediment the position correspondence in container utilize needle tubing through seal cover, sediment to be extracted nearby.
Claims (2)
1. dispersion liquid-liquid micro-extraction device, it is for dispersion liquid-liquid micro-extraction, and it comprises container (1), it is characterized in that; Be provided with port (2) at the two ends of container (1), on port (2), be connected with respectively seal cover (3); Described seal cover (3) is that syringe needle can pass and can not stop up the flexible sealing lid of syringe needle and leakage; The one or both ends of described container (1) port (2) are elongated tubular product, and the diameter of its elongated tubular product is the 1/5-1/15 of container average diameter.
2. dispersion liquid-liquid micro-extraction device according to claim 1, is characterized in that: design flow scale on the elongated tubular of port (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245781.6U CN203874505U (en) | 2014-05-14 | 2014-05-14 | Dispersion liquid-liquid micro-extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420245781.6U CN203874505U (en) | 2014-05-14 | 2014-05-14 | Dispersion liquid-liquid micro-extraction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203874505U true CN203874505U (en) | 2014-10-15 |
Family
ID=51675051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420245781.6U Expired - Fee Related CN203874505U (en) | 2014-05-14 | 2014-05-14 | Dispersion liquid-liquid micro-extraction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203874505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949087A (en) * | 2014-05-14 | 2014-07-30 | 贵州省烟草科学研究院 | Dispersive liquid-liquid microextraction device and method |
| CN105758688A (en) * | 2016-04-15 | 2016-07-13 | 天津市环境监测中心 | Dispersing liquid-liquid micro extraction kit |
-
2014
- 2014-05-14 CN CN201420245781.6U patent/CN203874505U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949087A (en) * | 2014-05-14 | 2014-07-30 | 贵州省烟草科学研究院 | Dispersive liquid-liquid microextraction device and method |
| CN105758688A (en) * | 2016-04-15 | 2016-07-13 | 天津市环境监测中心 | Dispersing liquid-liquid micro extraction kit |
| CN105758688B (en) * | 2016-04-15 | 2018-10-16 | 天津市生态环境监测中心 | A kind of dispersion liquid-liquid micro-extraction external member |
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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: 20141015 Termination date: 20150514 |
|
| EXPY | Termination of patent right or utility model |