CN211025228U - Solid phase extraction column - Google Patents
Solid phase extraction column Download PDFInfo
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- CN211025228U CN211025228U CN201921698949.8U CN201921698949U CN211025228U CN 211025228 U CN211025228 U CN 211025228U CN 201921698949 U CN201921698949 U CN 201921698949U CN 211025228 U CN211025228 U CN 211025228U
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- phase extraction
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Abstract
The utility model discloses a solid phase extraction post, it relates to solid phase extraction technical field, and it includes the column pipe, lower sieve board, packs, goes up sieve, test paper, the column pipe is the column, and the column pipe is by down up being equipped with sieve, packing, last sieve, test paper down in proper order, two liang of in close contact with each other. The solid phase extraction column has novel structure, reliable assembly, strong solution fluidity, high extraction rate and reliable positioning of the detection test paper; the upper sieve plate is made of hard materials such as polypropylene, polyethylene, polytetrafluoroethylene, glass or glass fiber, the strength of the upper sieve plate is enhanced, and the upper sieve plate is not easy to drop after being assembled with the column tube in an interference manner.
Description
The technical field is as follows:
The utility model relates to a solid phase extraction column belongs to solid phase extraction technical field.
Background art:
The solid phase extraction is a sample pretreatment technology developed in recent years, is developed by combining a liquid-solid extraction technology and a column liquid chromatography technology, is mainly used for separating, purifying and concentrating samples, can improve the recovery rate of analytes compared with the traditional liquid-liquid extraction method, more effectively separates the analytes from interfering components, reduces the sample pretreatment process, and is simple to operate, time-saving and labor-saving. The method is widely applied to the fields of medicine, food, environment, commodity inspection, chemical industry and the like.
In the clothing industry, azo dyes are widely used for dyeing and printing textiles, leather products and the like, and in synthetic dyes, the azo dyes are the most various and numerous, and account for about more than half. Some azo dyes are reduced and decomposed during use to release carcinogenic aromatic amine compounds, and such azo dyes that decompose carcinogenic aromatic amines are called forbidden azo dyes. Therefore, the method is very important for detecting dye residues of clothes, a sample matrix is complex in actual detection, the content of a target object is possibly very low, removal of interference components and enrichment of the target object are completed through pretreatment, an original sample is prepared into a sample to be tested, subsequent analysis and detection can be performed, the pretreatment of the sample has great influence on the sensitivity and accuracy of sample analysis, the feasibility of subsequent analysis is determined, and the method is a key step for determining an analysis result. In the detection of the azo dye residue, a solid phase extraction method is generally used.
The upper sieve plate of the existing solid-phase extraction column is pressed by filter cotton with low strength, the upper sieve plate is easy to separate to enable the filler to fall out after the extraction column is inverted, in addition, the extraction column is not provided with test paper for judging whether the sample poured into the extraction column meets the requirements or not, and the assembly of the existing solid-phase extraction column is complex.
The utility model has the following contents:
To the above problem, the to-be-solved technical problem of the utility model is to provide a novel structure, the assembly is reliable, and solution mobility is strong, and the extraction rate is high, the reliable solid phase extraction post in test paper location.
The utility model discloses a solid phase extraction post, it includes column pipe, lower sieve board, packs, goes up sieve, test paper, the column pipe is the column, for the base member of whole root solid phase extraction post, supplies other accessories installation, and the column pipe is by lower sieve, packing, last sieve, test paper down up being equipped with in proper order, two liang of each other in close contact with, the above whole that constitutes a solid phase extraction post.
Preferably, the column tube is in a column shape, is a base body of the whole solid-phase extraction column, and is used for installing other spare and accessory parts, the material of the column tube can be polypropylene, polyethylene, polytetrafluoroethylene, glass or glass fiber, the patent is not limited, and the column tube is within the protection range of the patent, the column tube comprises a flange, a cavity, an inclined plane, a protrusion and a liquid outlet, the flange is arranged on the upper part of the column tube and is a circumferential boss for fixing the handheld spare and accessory parts, the cavity is a cylindrical cavity in the column tube and is used for placing other spare and accessory parts, the inclined plane is arranged on the bottom surface of the column tube, and has a certain inclination, so that reagents can smoothly flow away, the specific inclination is not limited, the protrusion is arranged on the surface of the inclined plane and is in a rib shape, the circumference is arranged on the inclined plane, the specific number is not limited, the lower sieve plate plays a supporting role, and the liquid outlet is arranged at the bottom of the column tube, reagent liquid can flow out of the liquid outlet.
Preferably, the lower sieve plate is arranged at the bottom of the column tube, is arranged above the protrusion, has a diameter equivalent to that of the cavity in the column tube, is cylindrical, and can filter the reagent solution, so that the reagent solution can smoothly flow through the lower sieve plate, but the water molecule solution can be blocked and cannot pass through the lower sieve plate.
Preferably, the filler is arranged above the lower sieve plate, is a core component of the extraction column, and is filled with a powdery material, preferably diatomite, wherein the specific material is not limited, and the filling height is set according to the extraction requirement.
Preferably, the upper sieve plate is arranged above the filler, the material of the upper sieve plate can be polypropylene, polyethylene, polytetrafluoroethylene, glass or glass fiber and the like, the upper sieve plate is not limited in the protection range of the patent, the diameter of the upper sieve plate is slightly larger than that of a cavity in the column tube, the upper sieve plate is pressed above the filler through interference assembly, the filler can be effectively prevented from leaking outwards, the upper sieve plate comprises a liquid inlet, a notch and a frosting surface, the liquid inlet is arranged on the surface of the upper sieve plate and penetrates through the upper surface and the lower surface of the upper sieve plate, the upper sieve plate is regularly or irregularly arranged, the specific number of the upper sieve plate is not limited, the upper sieve plate is arranged in the protection range of the patent, the diameter of an upper opening of the liquid inlet is larger than that of a lower opening of the liquid inlet, an inclined surface is arranged between the upper opening and the lower opening, so that reagent solution and aqueous solution can smoothly, be an indent breach, its specific number is unlimited for block test paper, the frosting is established at the circumference lateral wall of last sieve, for not smooth surface, has certain frictional force after with the pillar pipe contact, like the slight grow of the in-process volume of extracting of packing, because frictional force's existence, makes the upper screen plate also can not up move.
Preferably, the detection test paper is arranged above the upper sieve plate and is in a circular ring shape, and is used for detecting whether the sample poured into the extraction column meets the requirement or not, detection color development can be performed, the detection test paper is provided with bayonets with the same number as the gaps, and the detection test paper can be clamped with the gaps on the upper sieve plate after assembly, so that the detection test paper can be stably assembled in the extraction column and cannot fall off.
The utility model has the advantages that:
1. The solid phase extraction column has novel structure, reliable assembly, strong solution fluidity, high extraction rate and reliable positioning of the detection test paper;
2. The upper sieve plate is made of hard materials such as polypropylene, polyethylene, polytetrafluoroethylene, glass or glass fiber and the like, so that the strength of the upper sieve plate is enhanced, and the upper sieve plate is not easy to fall off after being assembled with the column pipe in an interference manner;
3. The upper sieve plate is circumferentially provided with a frosted surface, so that a certain friction force exists after the upper sieve plate is contacted with the column tube, if the volume of the filler is slightly increased in the extraction process, the upper sieve plate cannot move upwards due to the existence of the friction force;
4. Notches with unlimited number are arranged in the circumferential direction of the upper sieve plate, so that the upper sieve plate can be clamped with bayonets of the test paper, and the test paper cannot fall off;
5. The lower part of the column tube is provided with the circumferential bulge, so that the lower sieve plate can be stably supported, and the lower sieve plate cannot collapse after being filled with the filler.
Description of the drawings:
For ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
3 FIG. 3 3 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 2 3; 3
FIG. 4 is a schematic structural view of the middle pillar tube of the present invention;
FIG. 5 is a sectional view taken along line B-B of FIG. 4;
FIG. 6 is a bottom view of FIG. 4;
Fig. 7 is a schematic structural view of an upper sieve plate in the present invention;
FIG. 8 is a top view of FIG. 7;
Fig. 9 is a cross-sectional view taken along line C-C of fig. 8.
1-column tube; 11-a flange; 12-a cavity; 13-inclined plane; 14-a bump; 15-a liquid outlet; 2-lower sieve plate; 3-a filler; 4-upper sieve plate; 41-liquid inlet; 411-upper opening; 412-lower opening; 42-notch; 43-frosting; 5-detecting test paper; 51-bayonet.
The specific implementation mode is as follows:
As shown in fig. 1 to 9, the following technical solutions are adopted in the present embodiment: the column tube 1 is columnar and is a matrix of the whole solid-phase extraction column and used for installing other parts, the column tube 1 is sequentially provided with the lower sieve plate 2, the filler 3, the upper sieve plate 4 and the detection test paper 5 from bottom to top, and the lower sieve plate 2, the filler 3, the upper sieve plate 4 and the detection test paper 5 are in close contact with each other in pairs, so that the whole solid-phase extraction column is formed.
Wherein, the column tube 1 is columnar, and is the base body of the whole solid phase extraction column, and is used for installing other spare and accessory parts, the material of the column tube 1 can be polypropylene, polyethylene, polytetrafluoroethylene, glass or glass fiber, etc., the patent is not limited, and the column tube 1 is in the protection scope of the patent, the column tube 1 comprises a flange 11, a cavity 12, an inclined plane 13, a protrusion 14 and a liquid outlet 15, the flange 11 is arranged on the upper part of the column tube 1 and is a circumferential boss for fixing the hand-held and other spare and accessory parts, the cavity 12 is a cylindrical cavity in the column tube 1 for placing other spare and accessory parts, the inclined plane 13 is arranged on the bottom surface of the column tube 1, has a certain inclination, so that the reagent can smoothly flow away, the specific inclination is unlimited, and is in the protection scope of the patent, the protrusion 14 is arranged on the surface of the inclined plane 13, is in a rib shape, the circumferential direction is arranged on the inclined plane 13, the specific number, the lower sieve plate 2 is supported, the liquid outlet 15 is arranged at the bottom of the column tube 1, and reagent liquid can flow out of the liquid outlet 15; the lower sieve plate 2 is arranged at the bottom of the column tube 1, is arranged above the bulge 14, has a diameter equal to that of the cavity 12 in the column tube 1, is cylindrical, and can filter the reagent solution, so that the reagent solution can smoothly flow through the lower sieve plate 2, but the water molecule solution can be blocked and cannot pass through the lower sieve plate 2; the filler 3 is arranged above the lower sieve plate 2, is a core component of the extraction column, is formed by filling powdery materials, preferably diatomite, and is not limited by specific materials, and the filling height is set according to the extraction requirement; the upper sieve plate 4 is arranged above the filler 3, the material of the upper sieve plate 4 can be polypropylene, polyethylene, polytetrafluoroethylene, glass or glass fiber and the like, the upper sieve plate 4 is not limited and is within the protection range of the patent, the diameter of the upper sieve plate is slightly larger than that of the cavity 12 in the column tube 1, the upper sieve plate is pressed above the filler 3 through interference fit, the filler 3 can be effectively prevented from leaking outwards, the upper sieve plate 4 comprises a liquid inlet 41, a gap 42 and a frosting surface 43, the liquid inlet 41 is arranged on the surface of the upper sieve plate 4 and penetrates through the upper surface and the lower surface of the upper sieve plate 4, the upper sieve plate 4 is regularly or irregularly arranged, the specific number is not limited, the upper sieve plate 4 and the lower sieve plate are within the protection range of the patent, the diameter of the upper opening 411 of the liquid inlet 41 is larger than that of the lower opening 412, an inclined plane is arranged between the upper opening 411 and the lower opening 412, so that reagent, the notches 42 are arranged in the circumferential direction of the upper sieve plate 4, are concave notches, are not limited in specific number, and are used for clamping the detection test paper 5, the frosted surface 43 is arranged on the circumferential side wall of the upper sieve plate 4, is a non-smooth surface, has a certain friction force after being contacted with the column tube 1, and if the volume of the filler 3 is slightly increased in the extraction process, the upper sieve plate 4 cannot move upwards due to the existence of the friction force; the test paper 5 is arranged above the upper sieve plate 4 and is in a circular ring shape, and is used for detecting whether the sample poured into the extraction column meets the requirement or not, detecting color development can be carried out, the test paper 5 is provided with bayonets 51 with the same number as the notches 42, and the test paper can be clamped with the notches 42 on the upper sieve plate 4 after being assembled, so that the test paper 5 can be stably assembled in the extraction column and cannot fall down.
The specific implementation mode is as follows: the solid phase extraction column is connected with an external pressure control device, the external pressure control device generates negative pressure so as to generate negative pressure in the cavity 12, then a sample solution to be analyzed and a proper amount of air are pumped into the column tube 1 through the cavity 12, the sample solution to be analyzed enters the filler 3 from the liquid inlet 41 of the upper sieve plate 4, the sample solution and the filler form a suspension, the external pressure control device increases the pressure after a certain time, and the sample solution flows out from the lower sieve plate 2 through the liquid outlet 15, so that the flow of the steps of leaching, sampling, washing, eluting and the like of the sample solution is completed.
The solid phase extraction column of the embodiment has the advantages of novel structure, reliable assembly, strong solution fluidity, high extraction rate and reliable positioning of the detection test paper; the upper sieve plate is made of hard materials such as polypropylene, polyethylene, polytetrafluoroethylene, glass or glass fiber and the like, so that the strength of the upper sieve plate is enhanced, and the upper sieve plate is not easy to fall off after being assembled with the column pipe in an interference manner; the upper sieve plate is circumferentially provided with a frosted surface, so that a certain friction force exists after the upper sieve plate is contacted with the column tube, if the volume of the filler is slightly increased in the extraction process, the upper sieve plate cannot move upwards due to the existence of the friction force; notches with unlimited number are arranged in the circumferential direction of the upper sieve plate, so that the upper sieve plate can be clamped with bayonets of the test paper, and the test paper cannot fall off; the lower part of the column tube is provided with the circumferential bulge, so that the lower sieve plate can be stably supported, and the lower sieve plate cannot collapse after being filled with the filler.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A solid phase extraction column, characterized in that: the device comprises a column tube (1), a lower sieve plate (2), a filler (3), an upper sieve plate (4) and test paper (5), wherein the column tube (1) is columnar, and the column tube (1) is sequentially provided with the lower sieve plate (2), the filler (3), the upper sieve plate (4) and the test paper (5) from bottom to top, and every two of the column tube and the lower sieve plate are in close contact with each other.
2. A solid phase extraction column as claimed in claim 1, wherein: pillar pipe (1) be the column, pillar pipe (1) includes flange (11), cavity (12), inclined plane (13), arch (14), liquid outlet (15), the upper portion of pillar pipe (1) is located in flange (11), is a circumferential boss, cavity (12) are the cylinder cavity in pillar pipe (1), the bottom surface of pillar pipe (1) is located in inclined plane (13), the surface at inclined plane (13) is established in arch (14), is the muscle form, and circumference sets up on inclined plane (13), the bottom in pillar pipe (1) is established in liquid outlet (15).
3. A solid phase extraction column as claimed in claim 1, wherein: the lower sieve plate (2) is arranged at the bottom of the column tube (1), and the diameter of the lower sieve plate above the bulge (14) is equivalent to that of the cavity (12) in the column tube (1) and is cylindrical.
4. A solid phase extraction column as claimed in claim 1, wherein: the filler (3) is arranged above the lower sieve plate (2) and is filled by powdery materials.
5. A solid phase extraction column as claimed in claim 1, wherein: go up sieve (4) locate the top of packing (3), the diameter of cavity (12) in the diameter ratio pillar pipe (1) is slightly big, through the interference fit pressfitting in the top of packing (3), go up sieve (4) including inlet (41), breach (42), frosting (43), the surface of last sieve (4) is established in inlet (41), runs through the upper surface and the lower surface of last sieve (4), and it is regular or irregular arranging at last sieve (4), and opening (412) are under the diameter ratio of the upper shed (411) of inlet (41) is big, has an inclined plane between upper shed (411) and lower opening (412), breach (42) are established in the circumference of last sieve (4), are an indent breach, frosting (43) are established at the circumferential side wall of last sieve (4).
6. A solid phase extraction column as claimed in claim 1, wherein: the detection test paper (5) is arranged above the upper sieve plate (4) and is in a circular ring shape, and bayonets (51) with the same number as the notches (42) are arranged on the detection test paper (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921698949.8U CN211025228U (en) | 2019-10-11 | 2019-10-11 | Solid phase extraction column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921698949.8U CN211025228U (en) | 2019-10-11 | 2019-10-11 | Solid phase extraction column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211025228U true CN211025228U (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921698949.8U Active CN211025228U (en) | 2019-10-11 | 2019-10-11 | Solid phase extraction column |
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| Country | Link |
|---|---|
| CN (1) | CN211025228U (en) |
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2019
- 2019-10-11 CN CN201921698949.8U patent/CN211025228U/en active Active
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