CN214763461U - Device for dispersion liquid-liquid micro-extraction - Google Patents
Device for dispersion liquid-liquid micro-extraction Download PDFInfo
- Publication number
- CN214763461U CN214763461U CN202120543395.5U CN202120543395U CN214763461U CN 214763461 U CN214763461 U CN 214763461U CN 202120543395 U CN202120543395 U CN 202120543395U CN 214763461 U CN214763461 U CN 214763461U
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- China
- Prior art keywords
- glass tube
- pointed
- piston
- dispersion
- tip
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- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 238000004853 microextraction Methods 0.000 title claims abstract description 20
- 239000006185 dispersion Substances 0.000 title description 6
- 239000011521 glass Substances 0.000 claims abstract description 102
- 238000000034 method Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000012864 cross contamination Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000005337 ground glass Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 150000003021 phthalic acid derivatives Chemical class 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical group 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
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Abstract
The utility model discloses a device for dispersion-liquid microextraction, which comprises a pointed glass tube, a piston, a capillary glass tube and a spiral interface, wherein the thick opening of the pointed glass tube and the thin opening of the pointed glass tube are both arranged in an opening way, the piston is communicated with the thin opening of the pointed glass tube through the spiral interface at the upper part, and the piston is communicated with the capillary glass tube through the spiral interface at the bottom; through the setting of tip glass pipe, treat that the extractant deposits the bottom of tip glass pipe thin mouthful, open the piston back extractant and directly flow to lower extreme capillary glass pipe, the capillary glass pipe of taking the scale can carry out accurate ration, and the sample flows from the bottom, need not go deep into the sample bottom of test tube with the trace sample injector, when reducing cross contamination, the convenient sample of taking, through the setting of tip glass pipe, then the dispersion-liquid micro extraction device that can make things convenient for, swiftly operate for dispersion-liquid micro extraction technique can be widely used.
Description
Technical Field
The utility model relates to a dispersion-liquid micro-extraction technical field specifically is a device that is used for dispersion-liquid micro-extraction.
Background
With the rapid development of modern instrument analysis technology, the precision of the determination of organic pollutants in water is higher and higher, but at present, the pretreatment operation process of organic matters in water is various, the time is long in sample analysis, and the method becomes a bottleneck of the analysis field. The dispersion liquid-liquid microextraction technology is more and more widely applied to the determination of organic pollutants in water, such as the pretreatment of polycyclic aromatic hydrocarbons, phthalic acid esters, organophosphorus pesticides, polychlorinated biphenyl, chlorophenol and other substances in water samples.
In the prior art, the application of dispersion liquid-liquid microextraction has some operation difficulties, because the dosage of an extractant and a dispersing agent in a water sample is very small, after two-phase balance, the quantity of the extractant deposited at the bottom of a test tube is about 5-50 mu L, the quantity of the extractant containing a target object is too small, the extractant needs to be accurately quantified after being absorbed by a micro-sampler and then is sent to an analytical instrument for sample injection and measurement, therefore, the process of actually absorbing all the extractants by a micro-sampler and quantifying is complex to operate, and the quantification easily generates errors, so a device for dispersion liquid-liquid microextraction needs to be provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device for dispersion-liquid is extracted a little, dispersion-liquid is extracted a little device that can convenient, swift operation for dispersion-liquid is extracted a little the technique can the wide application, in order to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a device for dispersion-liquid micro-extraction, includes tip glass pipe, piston, capillary glass pipe and spiral interface, the upper portion and the bottom of tip glass pipe set up respectively to tip glass pipe wide mouth and tip glass pipe thin mouth, tip glass pipe wide mouth and tip glass pipe thin mouth all are the opening setting, tip glass pipe fixed mounting is on the fixing base, the bottom fixed mounting of fixing base has the piston, the upper portion and the bottom of piston all are provided with the spiral interface, the piston passes through upper portion the spiral interface communicates with tip glass pipe thin mouth, the bottom of spiral interface is fixed with the capillary glass pipe, the piston passes through bottom spiral interface and capillary glass pipe intercommunication.
Preferably, the fixing seat is provided with a groove, the fixing seat is provided with an observation port, and the inner wall of the fixing seat is attached to the pointed glass tube.
Preferably, a cap is arranged on the upper portion of the pointed glass tube, an external thread is arranged on the upper portion of the pointed glass tube, a corresponding internal thread is arranged inside the cap, and the cap thread is mounted on the upper portion of the pointed glass tube.
Preferably, scales are arranged on the front face of the capillary glass tube, the diameter of the capillary glass tube is set to be 0.5-2 mm, the wall thickness is set to be 0.2-1.5 mm, and the length is set to be 5-20 cm.
Preferably, the diameter of the thick opening of the pointed glass tube is set to be 10-20 mm, the wall thickness is set to be 0.2-0.6 mm, the length is set to be 8-15 cm, and the volume is set to be 10-25 mL.
Preferably, the diameter of the narrow opening of the pointed glass tube is set to be 1-5 mm, the wall thickness is set to be 0.2-1.0 mm, and the length is set to be 1-1.5 cm.
Compared with the prior art, the beneficial effects of the utility model are that:
through the setting of tip glass pipe, treat that the extractant deposits the bottom of tip glass pipe thin mouthful, the capillary glass pipe of lower extreme is directly flowed to the extractant after opening the piston, and the capillary glass pipe of taking the scale can carry out accurate ration, and the sample flows from the bottom, need not go deep into the test tube bottom sample with the trace sample injector, when reducing cross contamination, convenient sample, through the setting of tip glass pipe, then the dispersion-liquid micro extraction device that can make things convenient for, swiftly operate for dispersion-liquid micro extraction technique can be widely used.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the present invention in partial section;
FIG. 3 is an enlarged schematic view of the area A in FIG. 2 according to the present invention;
fig. 4 is an enlarged schematic structural view of the area B in fig. 2 according to the present invention.
In the figure: 1. a pointed glass tube; 2. a piston; 3. a capillary glass tube; 4. calibration; 5. a fixed seat; 6. a viewing port; 7. capping; 8. a groove; 9. a sharp-pointed glass tube with a narrow opening; 10. a screw interface; 11. an internal thread; 12. an external thread; 13. the pointed glass tube is wide-mouthed.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a device for dispersion liquid-liquid microextraction comprises a pointed glass tube 1, a piston 2, a capillary glass tube 3 and a spiral connector 10, wherein the upper part and the bottom of the pointed glass tube 1 are respectively provided with a pointed glass tube thick opening 13 and a pointed glass tube thin opening 9, the pointed glass tube thick opening 13 and the pointed glass tube thin opening 9 are both arranged in an opening manner, the pointed glass tube 1 is fixedly arranged on a fixed seat 5, the bottom of the fixed seat 5 is fixedly provided with the piston 2, the upper part and the bottom of the piston 2 are both provided with the spiral connector 10, the piston 2 is communicated with the pointed glass tube thin opening 9 through the upper spiral connector 10, the bottom of the bottom spiral connector 10 is fixedly provided with the capillary glass tube 3, and the piston 2 is communicated with the capillary glass tube 3 through the bottom spiral connector 10;
through the arrangement of the spiral connector 10, the spiral connector 10 is used for hermetically connecting the bottom of the fine opening 9 of the pointed glass tube and the upper part of the capillary glass tube 3, and the piston 2 is used for controlling the sealing and outflow of liquid in the pointed glass tube 1;
a groove 8 is formed in the fixed seat 5, an observation port 6 is formed in the fixed seat 5, the inner wall of the fixed seat 5 is attached to the pointed glass tube 1, a cap 7 is arranged on the upper portion of the pointed glass tube 1, external threads 12 are arranged on the upper portion of the pointed glass tube 1, corresponding internal threads 11 are arranged inside the cap 7, and the cap 7 is installed on the upper portion of the pointed glass tube 1 in a threaded mode;
the pointed glass tube 1 and the piston 2 are conveniently fixed through the fixing seat 5, the bottom of the pointed glass tube 1 can be conveniently observed through the observation port 6, and the pointed glass tube 1 can be sealed through the cap 7;
through the arrangement of the fine glass tube 3, the fine glass tube 3 is provided with scales 4, the extractant can be accurately quantified, the piston 2 is made of ground glass, the piston 2 is used for controlling the sealing and outflow of liquid in the pointed glass tube 1, the spiral connector 10 is made of polytetrafluoroethylene, the spiral connector 10 is used for hermetically connecting the bottom of a fine opening 9 of the pointed glass tube and the upper part of the fine glass tube 3, and the joint of the bottom of the fine opening 9 of the pointed glass tube and the upper part of the fine glass tube 3 and the spiral connector 10 is subjected to special ground treatment;
the working principle is as follows: when the device is used, 5-15 mL of water sample is added into the pointed glass tube 1 from the opening A, the piston 2 is in a closed state, 0.5-1.5 mL of dispersing agent (such as methanol, acetone and the like) and 10-200 mu L of extracting agent (such as chlorobenzene, tetrachloroethylene and the like) are added into the pointed glass tube from the thick opening 13;
the cap 7 covers the upper part of the pointed glass tube 1 filled with the sample and the reagent, the pointed glass tube 1 is sealed, the pointed glass tube 1 filled with the sample and the reagent is subjected to ultrasonic treatment for 2-10 minutes, the pointed glass tube is kept still for 2-5 minutes, then is centrifuged at the rotating speed of 4000r/min for 5-10 minutes, and is subjected to centrifugation at the rotating speed of 4000r/min for 5-10 minutes, the extractant is deposited to the thin opening 9 of the pointed glass tube, the capillary glass tube 3 is installed through the spiral connector 10, after the capillary glass tube 3 is installed, the piston 2 is opened, the extractant flows out through the capillary glass tube 3, the volume of the extractant is calculated, and the flowing-out extractor passes through an instrument and a device for testing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A device for dispersion-liquid microextraction comprises a pointed glass tube (1), a piston (2), a capillary glass tube (3) and a spiral interface (10), and is characterized in that: the upper portion and the bottom of tip glass pipe (1) set up respectively to tip glass pipe wide mouth (13) and tip glass pipe thin mouth (9), tip glass pipe wide mouth (13) and tip glass pipe thin mouth (9) all are the opening setting, tip glass pipe (1) fixed mounting is on fixing base (5), the bottom fixed mounting of fixing base (5) has piston (2), the upper portion and the bottom of piston (2) all are provided with screw connector (10), piston (2) are through upper portion screw connector (10) and tip glass pipe thin mouth (9) intercommunication, bottom the bottom of screw connector (10) is fixed with capillary glass pipe (3), piston (2) are through bottom screw connector (10) and capillary glass pipe (3) intercommunication.
2. An apparatus for dispersion-liquid microextraction according to claim 1 wherein: the novel glass tube is characterized in that the fixing seat (5) is provided with a groove (8), the fixing seat (5) is provided with an observation port (6), and the inner wall of the fixing seat (5) is attached to the pointed glass tube (1).
3. An apparatus for dispersion-liquid microextraction according to claim 2 wherein: the novel glass tube is characterized in that a cover cap (7) is arranged on the upper portion of the pointed glass tube (1), external threads (12) are arranged on the upper portion of the pointed glass tube (1), corresponding internal threads (11) are arranged inside the cover cap (7), and the cover cap (7) is installed on the upper portion of the pointed glass tube (1) in a threaded mode.
4. An apparatus for dispersion-liquid microextraction according to claim 1 wherein: scales (4) are arranged on the front face of the capillary glass tube (3), the diameter of the capillary glass tube is set to be 0.5-2 mm, the wall thickness is set to be 0.2-1.5 mm, and the length is set to be 5-20 cm.
5. An apparatus for dispersion-liquid microextraction according to claim 1 wherein: the diameter of the wide opening (13) of the pointed glass tube is set to be 10-20 mm, the wall thickness is set to be 0.2-0.6 mm, the length is set to be 8-15 cm, and the volume is set to be 10-25 mL.
6. An apparatus for dispersion-liquid microextraction according to claim 1 wherein: the diameter of the narrow opening (9) of the pointed glass tube is set to be 1-5 mm, the wall thickness is set to be 0.2-1.0 mm, and the length is set to be 1-1.5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120543395.5U CN214763461U (en) | 2021-03-16 | 2021-03-16 | Device for dispersion liquid-liquid micro-extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120543395.5U CN214763461U (en) | 2021-03-16 | 2021-03-16 | Device for dispersion liquid-liquid micro-extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214763461U true CN214763461U (en) | 2021-11-19 |
Family
ID=78665732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120543395.5U Expired - Fee Related CN214763461U (en) | 2021-03-16 | 2021-03-16 | Device for dispersion liquid-liquid micro-extraction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214763461U (en) |
-
2021
- 2021-03-16 CN CN202120543395.5U patent/CN214763461U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |