CN219558773U - Repeatedly usable's injection type composite ion chromatographic solid phase extraction post - Google Patents

Abstract

The utility model discloses an injection type composite ion chromatography solid-phase extraction column capable of being used repeatedly, and relates to the technical field of ion chromatography solid-phase extraction columns. The utility model can prevent the cleaning filler liquid in the cavity of the injector from being failed due to back suction and drying when the push rod of the injector is taken out, and the card is pushed to seal the vent hole, and then the activating solvent or the sample liquid is added for reuse, so that the injector can be reused, more various liquids can be cleaned, the operation of the using method is simple, and the liquid sample or the extracting liquid can be directly pushed through the small column by using pressure, thereby achieving the cleaning effect.

Description

Repeatedly usable's injection type composite ion chromatographic solid phase extraction post

Technical Field

The utility model relates to the technical field of ion chromatography solid phase extraction columns, in particular to an injection type composite ion chromatography solid phase extraction column capable of being used repeatedly.

Background

The ion chromatographic solid phase extraction column adopts high-cleanliness materials, utilizes reverse phase adsorption and ion exchange in situ, is suitable for removing interference ions in various matrixes, including anions, cations, metal ions, hydrophobic impurities and the like, and avoids the pollution of the impurities to the ion chromatographic column and the influence on separation.

The existing ion chromatography solid phase extraction columns are all single small columns, such as an ion chromatography C18 column, an ion chromatography Ag column, an ion chromatography Na column and the like, a plurality of ion chromatography solid phase extraction small columns are needed to be used in combination in actual use, operation is complex in use, and a plurality of application problems exist, such as in the first method of national food inspection standard GB5009.33-2016 (5.2.6 is about 15mL of the standby solution, the front 7mL is discarded through an aqueous filter membrane needle filter, a C18 column, an Ag column and a Na column, and the rear eluent is collected to be detected), three small columns are needed to be activated respectively and then are connected in series with an injector and an aqueous filter membrane needle filter in series, air is easy to enter during connection after activation, so that the extraction efficiency of filling is reduced, the other three small columns, the injector and the aqueous filter membrane needle filter are too large due to pushing caused by the interface, sample liquid leakage is easy to occur due to too many small column falling phenomena, experimental results are influenced, three small columns use material column shells, six blocks are needed to be stored, and six plugs are needed during storage, so that the economic price is not ideal, and the scheme is not needed to be deeply studied, and the problems are solved.

Disclosure of Invention

The utility model aims to provide an injection type composite ion chromatographic solid-phase extraction column capable of being used repeatedly, so as to solve the problems that related devices in the prior art are expensive, not practical enough and not ideal in economical efficiency.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an injection type composite ion chromatographic solid phase extraction post that can repetitious usage, includes the body, the inside of body is provided with the piston, and the push-and-pull rod is installed on the top of piston, the top of push-and-pull rod extends to the top of body, the air vent has been seted up to the outer wall of body, and the one end of air vent is provided with the card, the card is close to the one end bonding of body and has sealed pad, the both ends of card all are provided with spacing, and the one end of spacing all is connected with the outer wall of body, the one end of spacing all is fixed with the separation blade.

Preferably, the shape of the baffle is arc-shaped, and the height of the baffle is smaller than that of the limit strip.

Preferably, two first bumps are installed at the top of card one end, the second bump is installed to the top intermediate position department of card one end, and the shape of first bump and second bump is the hemisphere.

Preferably, the filter is installed at the bottom end of the pipe body, and a filter membrane is arranged on the inner wall of the filter.

Preferably, the bottom inside the pipe body is provided with ion chromatography Na column filler, and the top of ion chromatography Na column filler is provided with ion chromatography Ag column filler, the top of ion chromatography Ag column filler is provided with ion chromatography C18 column filler, and ion chromatography C18 column filler, ion chromatography Ag column filler and ion chromatography Na column filler's upper and lower both ends all are provided with the sieve, the sieve is all connected with the inner wall of pipe body.

Preferably, the shape of the card is tile-shaped, and the inner wall of the card is attached to the outer wall of the pipe body.

Compared with the prior art, the utility model has the beneficial effects that:

through promoting spacing removal under the spacing direction of card, the inside cavity and the atmosphere intercommunication of messenger's body can take out push-and-pull rod and piston this moment, promote spacing back again afterwards, make sealed pad block up the air vent, make the air vent sealed, can add activation solvent or appearance liquid reuse device this moment to can carry out a lot of use to the device, can practice thrift certain cost, more economic nature.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a schematic view of a card of the present utility model;

fig. 4 is a schematic view showing a three-dimensional appearance structure of a combination of a limit bar and a baffle plate.

In the figure: 1. a push-pull rod; 2. a piston; 3. a tube body; 4. a sieve plate; 5. ion chromatography C18 column packing; 6. ion chromatography Ag column packing; 7. ion chromatography Na column packing; 8. a filter; 9. a limit bar; 10. a baffle; 11. a vent hole; 12. a card; 13. a first bump; 14. a second bump; 15. and a sealing gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to fig. 1-4, a reusable injection type composite ion chromatography solid phase extraction column comprises a tube body 3, wherein a piston 2 is arranged in the tube body 3, a push-pull rod 1 is arranged at the top end of the piston 2, and the top end of the push-pull rod 1 extends to the upper part of the tube body 3;

specifically, as shown in fig. 1 and 2, the tube body 3 uses a 15mL syringe, so that necessary pressure and proper flow rate can be ensured, and because the purification filler is based on the ion exchange principle, the filler with the pushing flow rate of less than 2mL/min can be effectively utilized, meanwhile, the concentration of the pretreatment sample liquid is ensured to be less than the capacity of the column, 40mL of ultrapure water is directly used for eluting during activation, and the flow rate is less than 3mL/min.

The outer wall of the pipe body 3 is provided with a vent hole 11, one end of the vent hole 11 is provided with a card 12, one end of the card 12 close to the pipe body 3 is adhered with a sealing gasket 15, both ends of the card 12 are provided with limiting strips 9, one ends of the limiting strips 9 are connected with the outer wall of the pipe body 3, and one ends of the limiting strips 9 are fixed with baffle plates 10;

the shape of the card 12 is tile-shaped, and the inner wall of the card 12 is attached to the outer wall of the pipe body 3;

specifically, as shown in fig. 2, 3 and 4, the sealing gasket 15 can seal the vent hole 11 by blocking it, so that the device can be used normally, and the inside of the tube body 3 can be communicated with the external environment by taking down the card 12, so that the push-pull rod 1 and the piston 2 can be taken down conveniently, and the activating solvent or the sample liquid can be added again.

The shape of the baffle plate 10 is arc-shaped, and the height of the baffle plate 10 is smaller than the height of the limit strip 9;

two first protruding points 13 are arranged at the top of one end of the card 12, a second protruding point 14 is arranged at the middle position of the top end of one end of the card 12, and the shapes of the first protruding point 13 and the second protruding point 14 are hemispherical;

specifically, as shown in fig. 2, 3 and 4, the blocking of the blocking piece 10 to the first bump 13 can prevent the card 12 from falling off due to gravity, and the second bump 14 can be used as an acting point, so that the second bump 14 is convenient to slide.

The filter 8 is arranged at the bottom end of the pipe body 3, and a filter membrane is arranged on the inner wall of the filter 8;

the bottom end inside the tube body 3 is provided with an ion chromatography Na column packing 7, an ion chromatography Ag column packing 6 is arranged above the ion chromatography Na column packing 7, an ion chromatography C18 column packing 5 is arranged above the ion chromatography Ag column packing 6, screen plates 4 are arranged at the upper end and the lower end of the ion chromatography C18 column packing 5, the ion chromatography Ag column packing 6 and the ion chromatography Na column packing 7, and the screen plates 4 are connected with the inner wall of the tube body 3;

specifically, as shown in fig. 1 and 2, the ion chromatography C18 column packing 5 is used for removing hydrophobic pollutants, the C18 column packing is used for a PH range of 2-8, the rp column packing is used for a PH range of 1-14, the ion chromatography Ag column packing 6 is Ag-type strong acid cation exchange resin, cl-, br-, I-, asO43-, crO42-, CN-, moO42-, PO43-, seO32-, SO32-, seCN-, S2-, SCN-and WO 42-ions are removed, high chlorine is removed, the ion chromatography C18 column packing 5 should be matched with a hydrogen column packing or a sodium column packing for capturing Ag ions which may penetrate, when the Ag column packing is used, the PH of a solution should be below 7.0 for preventing silver oxide precipitation from being generated to make the Ag column packing black and invalid, the ion chromatography Na column packing 7 is Na-type strong acid cation exchange resin, alkaline earth ions and transition metal ions in a sample matrix are removed, and heavy metals are removed.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. The utility model provides an injection type composite ion chromatographic solid phase extraction post that can repetitious usage, includes body (3), the inside of body (3) is provided with piston (2), and push-and-pull rod (1) are installed on the top of piston (2), the top of push-and-pull rod (1) extends to the top of body (3), its characterized in that: the utility model discloses a sealing device for a pipe body, including a pipe body (3), a clamping piece (10) and a sealing strip (9), air vent (11) have been seted up to the outer wall of pipe body (3), and the one end of air vent (11) is provided with card (12), the one end that card (12) is close to pipe body (3) bonds there is sealed pad (15), the both ends of card (12) all are provided with spacing (9), and the one end of spacing (9) all is connected with the outer wall of pipe body (3), the one end of spacing (9) all is fixed with separation blade (10).

2. The reusable, injectable composite ion chromatography solid phase extraction cartridge of claim 1, wherein: the shape of the baffle (10) is arc-shaped, and the height of the baffle (10) is smaller than that of the limit strip (9).

3. The reusable, injectable composite ion chromatography solid phase extraction cartridge of claim 1, wherein: two first salient points (13) are installed at the top of card (12) one end, second salient point (14) are installed at the top intermediate position department of card (12) one end, and first salient point (13) and second salient point (14)'s shape are the hemisphere.

4. The reusable, injectable composite ion chromatography solid phase extraction cartridge of claim 1, wherein: the bottom of the pipe body (3) is provided with a filter (8), and the inner wall of the filter (8) is provided with a filter membrane.

5. The reusable, injectable composite ion chromatography solid phase extraction cartridge of claim 1, wherein: the ion chromatography is provided with ion chromatography Na post packing (7) in the inside bottom of body (3), and the top of ion chromatography Na post packing (7) is provided with ion chromatography Ag post packing (6), the top of ion chromatography Ag post packing (6) is provided with ion chromatography C18 post packing (5), and the upper and lower both ends of ion chromatography C18 post packing (5), ion chromatography Ag post packing (6) and ion chromatography Na post packing (7) all are provided with sieve (4), sieve (4) all are connected with the inner wall of body (3).

6. The reusable, injectable composite ion chromatography solid phase extraction cartridge of claim 1, wherein: the shape of the card (12) is tile-shaped, and the inner wall of the card (12) is attached to the outer wall of the pipe body (3).