CN205182250U - A device for suspending dispersion liquid liquid micro -extraction - Google Patents
A device for suspending dispersion liquid liquid micro -extraction Download PDFInfo
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- CN205182250U CN205182250U CN201520937787.4U CN201520937787U CN205182250U CN 205182250 U CN205182250 U CN 205182250U CN 201520937787 U CN201520937787 U CN 201520937787U CN 205182250 U CN205182250 U CN 205182250U
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Abstract
The utility model relates to a sample extraction and separation technical field especially relates to a device for suspending dispersion liquid liquid micro -extraction. The utility model discloses a device for suspending dispersion liquid liquid micro -extraction, it has designed sealed lid respectively in body upper end and lower extreme for the body is sealed when placing with the centrifugation, lid on the second of taking the connecting pipe is recycled, through the promotion of lower extreme piston valve in centrifugation back for the extractant of suspension gets into in the connecting pipe, the device can put into the ice -water bath, makes the extractant solidification that suspends in the connecting pipe to realize the separation with the sample aqueous solution, reduce water by a wide margin and sneak into the probability in the extractant that repeatability, maneuverability are strong, and are favorable to protecting instrument, increase of service life, in addition, the connecting pipe is equipped with the measurement scale, can accurately read out the volume of extractant, is convenient for carry on accurate quantitative analysis.
Description
Technical field
The utility model relates to sample extraction separation technology field, particularly relates to a kind of device for suspended dispersed liquid-liquid micro-extraction.
Background technology
Dispersive liquid-liquid microextraction is that the one grown up in recent years is green, eco-friendly novel micro-extraction technique, has been widely used in the concentration and separation of trace organic substance and inorganic metal ion in the samples such as environmental water sample, beverage, biology.Micro updating organic extractant and dispersant liquid are injected in sample aqueous solution by this technology micro syringe fast, form extractant microballon, be dispersed in the emulsion of organic extractant-dispersant-water three formation, through high speed centrifugation, extraction phase is separated, directly enters analytical instrument and measure.According to extractant different in kind used, centrifugal rear extractant is divided into sinking and the two kinds of forms that suspend.The extractant that conventional disperse liquid-liquid micro-extraction uses generally mostly is poisonous sinking organic reagent, and harm environmental and human health impacts, application is restricted gradually.
The suspended dispersed liquid-liquid micro-extraction technology that development in recent years is got up, extractant undecyl alcohol used, lauryl alcohol, hexadecane isodensity are less than water, without the need to using high density, chloride toxic solvent, become the separation and concentration technology of a kind of green close friend received much concern.But the bottleneck problem of this technology is, after solution uses conventional centrifugal pipe to be separated, the extract of micro updating swims in upper strata, need to draw with micro syringe, because conventional centrifugal mouth of pipe footpath is comparatively large, operate and improperly a little will be drawn onto water, experimental result is impacted, cannot accurate quantitative analysis, and poor repeatability, if also can affect the life-span of chromatographic column with chromatographic.
Therefore, for above deficiency, need to provide a kind of and can realize containing the suspension extractant of target compound and the quick separating of sample aqueous solution, significantly reduce the device that water is mixed into the suspended dispersed liquid-liquid micro-extraction of probability in extractant.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model solves existing suspended dispersed liquid-liquid micro-extraction technology, after its solution uses conventional centrifugal pipe to be separated, the extract of micro updating swims in upper strata, need to draw with micro syringe, because conventional centrifugal mouth of pipe footpath is comparatively large, operate and improperly a little will be drawn onto water, experimental result is impacted, cannot accurate quantitative analysis, and poor repeatability, the problem in chromatographic column life-span also can be affected with chromatographic.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of device for suspended dispersed liquid-liquid micro-extraction, and it comprises body, the first top cover labyrinth body, the second upper cover body and lower seal lid; Described body is the tubular structure of an equal opening in two ends; Described first top cover labyrinth body and all selectable upper end being sealedly attached to described body of the second upper cover body, described second upper cover body is also provided with tube connector; The lower end of described lower seal lid and body is tightly connected; In described body, be also provided with piston valve, the tube wall of described piston valve and body is tightly connected, and can moving axially along described body.
Further, the opening diameter of the upper end of described body is less than the diameter of main pipe, and outer wall has the first external screw thread, and described first top cover labyrinth body and the second upper cover body are equipped with the first internal thread matched with described first external screw thread.
Further, the opening diameter of the lower end of described body is identical with the diameter of described main pipe, and outer wall has the second external screw thread, and described lower seal lid is provided with the second internal thread matched with described second external screw thread.
Further, the internal diameter of described tube connector is 1.0mm-5.0mm, and the height that tube connector exceeds described second upper cover body is 20mm-50mm.
Further, the inwall of described tube connector is provided with metering scale.
Further, described piston valve is also connected with piston handle, described piston handle is positioned at the side near lower seal lid.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: the utility model is used for the device of suspended dispersed liquid-liquid micro-extraction, and it devises sealing cover body respectively in body top and bottom, for placing the sealing with body time centrifugal; After centrifugal, the second upper cover body of recycling band tube connector, by the promotion of lower end piston valve, makes the extractant suspended enter in tube connector; This device can put into ice-water bath, and make the extractant solidification suspended in tube connector, thus realize being separated with sample aqueous solution, significantly minimizing water is mixed into the probability in extractant, repeated, workable, and is conducive to protecting instrument, increases the service life; In addition, tube connector is provided with metering scale, can read the volume of extractant exactly, is convenient to carry out accurate quantitative analysis.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the second upper cover body of the device for suspended dispersed liquid-liquid micro-extraction of the utility model embodiment is connected with body;
Fig. 2 is the schematic diagram that the first top cover labyrinth body of the device for suspended dispersed liquid-liquid micro-extraction of the utility model embodiment is connected with body.
In figure: 1: body; 11: main pipe; 2: the second upper cover body; 3: the first top cover labyrinth bodies; 4: piston valve; 5: piston handle; 6: lower seal lid.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score " top ", " end ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, also it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
As depicted in figs. 1 and 2, a kind of device for suspended dispersed liquid-liquid micro-extraction that the utility model embodiment provides, it comprises body 1, first top cover labyrinth body 3, second upper cover body 2 and lower seal lid 6; Described body 1 is the tubular structure of an equal opening in two ends; Described first top cover labyrinth body 3 and all selectable upper end being sealedly attached to described body 1 of the second upper cover body 2, described second upper cover body 2 is also provided with tube connector; Described lower seal lid 6 is tightly connected with the lower end of body 1; In described body 1, be also provided with piston valve 4, described piston valve 4 is tightly connected with the tube wall of body 1, and can moving axially along described body 1.
First top cover labyrinth body 3 and all selectable upper end being sealedly attached to described body 1 of the second upper cover body 2 refer to: usually, according to the step that work uses, be that the first top cover labyrinth body 3 is connected on body 1, or be that the second upper cover body 2 is connected on body 1.
The device of suspended dispersed liquid-liquid micro-extraction of the present utility model is when Extraction and separation compound, by in direct for sample aqueous solution adding apparatus, again the dispersant of mixing and extractant are squeezed into fast, after abundant mixing, seal with the first top cover labyrinth body 3, put into centrifuge, then the first top cover labyrinth body 3 is removed, change the second upper cover body 2 of band tube connector, remove lower seal lid 6 again, promote piston valve 4 extractant being suspended in upper strata to be pushed lentamente in the tube connector of the second upper cover body 2, device is put into ice-water bath solidification, realize being separated of extractant and sample aqueous solution.
For convenience of description, the body 1 in the utility model comprises main pipe 11 and is positioned at the part at main pipe 11 two ends.
The opening diameter of the upper end of described body 1 is less than the diameter of main pipe 11, and outer wall has the first external screw thread, and described first top cover labyrinth body 3 and the second upper cover body 2 are equipped with the first internal thread matched with described first external screw thread.The opening diameter of the lower end of described body 1 is identical with the diameter of described main pipe 11, and outer wall has the second external screw thread, and described lower seal lid 6 is provided with the second internal thread matched with described second external screw thread.The mode be threaded connection achieves described first top cover labyrinth body 3, second upper cover body 2, being tightly connected of lower seal lid 6 and main pipe 11.
Of course, as long as other any connected mode that can realize being tightly connected is all the scope of the utility model protection.
The internal diameter of described tube connector is 1.0mm-5.0mm, and the height that tube connector exceeds described second upper cover body 2 is 20mm-50mm.The inwall of described tube connector is provided with metering scale, can read the volume of extractant exactly, is convenient to carry out accurate quantitative analysis.
Described piston valve 4 is also connected with piston handle 5, and described piston handle 5 is positioned at the side near lower seal lid 6.By promoting piston handle 5, piston valve 4 is moved in body 1 vertically.
More detailed, when utilizing this device to carry out suspended dispersed liquid-liquid micro-extraction, first sample aqueous solution is added in the body 1 of sealing by the opening part of body 1 upper end, dispersant and the extractant of mixing is injected again fast with syringe, above body 1, cover the first top cover labyrinth body 3 seal, ultrasonic or vortex oscillation, form emulsion, centrifugal, the extract containing target compound is suspended in sample aqueous solution surface.Take off the first top cover labyrinth body 3, cover the second upper cover body 2, take off lower seal lid 6 again, upwardly piston handle 5, the extractant of suspension is slowly shifted onto in the tube connector in the second upper cover body 2, and do not make sample aqueous solution enter tube connector, cover lower seal lid 6 to seal, device is put into ice-water bath, extractant in tube connector is solidified, and take off the second upper cover body 2 immediately, tube connector lower end connects sample injection bottle, the extractant of cured at room temperature is dissolved in sample injection bottle, namely can be used for Instrumental Analysis and measures.
In sum, the utility model is used for the device of suspended dispersed liquid-liquid micro-extraction, and it devises sealing cover body respectively in body top and bottom, for placing the sealing with body time centrifugal; After centrifugal, the second upper cover body of recycling band tube connector, by the promotion of lower end piston valve, makes the extractant suspended enter in tube connector; This device can put into ice-water bath, and make the extractant solidification suspended in tube connector, thus realize being separated with sample aqueous solution, significantly minimizing water is mixed into the probability in extractant, repeated, workable, and is conducive to protecting instrument, increases the service life; In addition, tube connector is provided with metering scale, can read the volume of extractant exactly, is convenient to carry out accurate quantitative analysis.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (6)
1. for a device for suspended dispersed liquid-liquid micro-extraction, it is characterized in that: comprise body (1), the first top cover labyrinth body (3), the second upper cover body (2) and lower seal lid (6); Described body (1) is the tubular structure of an equal opening in two ends; Described first top cover labyrinth body (3) and all selectable upper end being connected to described body (1) of the second upper cover body (2), described second upper cover body (2) is also provided with tube connector; Described lower seal lid (6) is tightly connected with the lower end of body (1); In described body (1), be also provided with piston valve (4), described piston valve (4) is tightly connected with the tube wall of body (1), and can moving axially along described body (1).
2. the device for suspended dispersed liquid-liquid micro-extraction according to claim 1, it is characterized in that: the opening diameter of the upper end of described body (1) is less than the diameter of main pipe (11), and outer wall has the first external screw thread, described first top cover labyrinth body (3) and the second upper cover body (2) are equipped with the first internal thread matched with described first external screw thread.
3. the device for suspended dispersed liquid-liquid micro-extraction according to claim 2, it is characterized in that: the opening diameter of the lower end of described body (1) is identical with the diameter of described main pipe (11), and outer wall has the second external screw thread, described lower seal lid (6) is provided with the second internal thread matched with described second external screw thread.
4. the device for suspended dispersed liquid-liquid micro-extraction according to claim 3, is characterized in that: the internal diameter of described tube connector is 1.0mm-5.0mm, and the height that tube connector exceeds described second upper cover body (2) is 20mm-50mm.
5. the device for suspended dispersed liquid-liquid micro-extraction according to claim 4, is characterized in that: the inwall of described tube connector is provided with metering scale.
6. the device for suspended dispersed liquid-liquid micro-extraction according to claim 5, it is characterized in that: on described piston valve (4), be also connected with piston handle (5), described piston handle (5) is positioned at the side near lower seal lid (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520937787.4U CN205182250U (en) | 2015-11-23 | 2015-11-23 | A device for suspending dispersion liquid liquid micro -extraction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520937787.4U CN205182250U (en) | 2015-11-23 | 2015-11-23 | A device for suspending dispersion liquid liquid micro -extraction |
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| CN205182250U true CN205182250U (en) | 2016-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784455A (en) * | 2016-05-16 | 2016-07-20 | 张起香 | Extraction structure and liquid pretreatment device |
| CN108693274A (en) * | 2018-06-22 | 2018-10-23 | 山东省葡萄研究院 | Solidification-floating dispersive liquid-liquid microextraction and the remaining method of triazole pesticide in HPLC combination detection white wines |
| 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
- 2015-11-23 CN CN201520937787.4U patent/CN205182250U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784455A (en) * | 2016-05-16 | 2016-07-20 | 张起香 | Extraction structure and liquid pretreatment device |
| CN105784455B (en) * | 2016-05-16 | 2018-08-17 | 张起香 | Extract structure and liquid preprocessing device |
| US10150065B2 (en) | 2016-05-16 | 2018-12-11 | Tianjin Anbang Jinahe Technology Co., Ltd. | Extraction structure, extraction module, and liquid pretreatment device |
| CN108693274A (en) * | 2018-06-22 | 2018-10-23 | 山东省葡萄研究院 | Solidification-floating dispersive liquid-liquid microextraction and the remaining method of triazole pesticide in HPLC combination detection white wines |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220810 Address after: 100097 No. 9 middle garden, Shuguang garden, Beijing, Haidian District Patentee after: BEIJING ACADEMY OF AGRICULTURE AND FORESTRY SCIENCES Address before: Room 505, Comprehensive Building, Beijing Academy of Agriculture and Forestry, No. 9, Shuguang Garden Middle Road, Banjing, Haidian District, Beijing 100097 Patentee before: BEIJING RESEARCH CENTER FOR AGRICULTURAL STANDARDS AND TESTING |
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| TR01 | Transfer of patent right |