CN211798958U

CN211798958U - Solid phase extraction device

Info

Publication number: CN211798958U
Application number: CN201921840131.5U
Authority: CN
Inventors: 孙菁; 栾真杰; 李佩佩; 李朵; 孟晓萍
Original assignee: Northwest Institute of Plateau Biology of CAS
Current assignee: Northwest Institute of Plateau Biology of CAS
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-10-30
Anticipated expiration: 2029-10-30

Abstract

The utility model relates to a solid phase extraction technical field, concretely relates to solid phase extraction device. The device comprises an iron support, a suction flask, an extraction column, an adjusting device, a drop number sensor, a computer terminal, a rubber tube and a vacuum pump. The utility model discloses a solid phase extraction device compares and has following beneficial effect in current device: the manual extrusion mode is eliminated, a plurality of devices can be operated at one time, time and labor are saved, and the experiment efficiency is greatly improved; the drop number sensor automatically records the drop number and is connected with the computer terminal to carry out the whole experiment in a visible state, the flow speed is automatically controlled, and the result accuracy is higher than that of a centrifugal method and a direct vacuum method; the vacuum pump is connected with a common vacuum pump in a laboratory, so that the effects are achieved, all method advantages can be achieved by only needing to be provided with cheap accessories, expensive solid phase extraction instruments do not need to be purchased, the same effects can be achieved, and the cost is saved.

Description

Solid phase extraction device

Technical Field

The utility model relates to a solid phase extraction technical field, concretely relates to solid phase extraction device.

Background

The general operation procedure of solid phase extraction is divided into activated adsorbent and loading operation. Wherein, activating the adsorbent means rinsing the solid phase extraction column with a suitable solvent before extracting the sample so that the adsorbent is kept wet and can adsorb the target compound or the interfering compound. The solvents for activating the solid phase extraction small columns in different modes are different. In order to keep the adsorbent in the solid phase extraction cartridge wet after activation and before sample addition, approximately 1mL of the solvent for activation treatment should be kept above the adsorbent after activation treatment. The sample loading refers to pouring a liquid or dissolved solid sample into the activated solid phase extraction column, and then making the sample enter the adsorbent by using a vacuum pumping, pressurizing or centrifuging method.

The three methods are common solid phase extraction methods in laboratories at present and are applied to the whole processes of activation, sample loading, washing and collection. The direct vacuum pumping method is generally connected to a vacuum pump equipped in a laboratory, and liquid is sucked to the lower part by utilizing pressure difference to complete the step of solid phase extraction, so that the direct vacuum pumping method has the advantages that a plurality of samples can be connected to one pump for batch operation, and the machine is time-saving and labor-saving; the disadvantages are that the flow rate can not be controlled in the stage of activating the solid phase extraction column and adsorbing, which can cause incomplete activation and incomplete adsorption to influence the measuring result. The manual method generally uses the aurilave to extrude above the solid phase extraction column by the manual method to complete the step of solid phase extraction, and has the advantages of controllable flow rate and better experimental result; the disadvantages are that only one can be carried out at a time, and the activating adsorption process is long and time-consuming and labor-consuming. The centrifugal method generally comprises the steps of putting an extraction column into a centrifugal tube and completing solid phase extraction by utilizing centrifugal force, and has the advantages that compared with the first method, more samples can be simultaneously operated, and time and labor are saved; the method has the disadvantages that the flow rate cannot be controlled in the activation solid phase extraction column and the adsorption stage, so that incomplete activation and incomplete adsorption are caused to influence the measurement result, more uncontrollable factors exist in the closed environment of the centrifugal machine, and the experimental error is larger. The existing solid phase extractor has the advantages of all the methods, but has the defects of high price and is not a routine laboratory instrument such as a vacuum pump.

SUMMERY OF THE UTILITY MODEL

Based on the above problem, an object of the utility model is to provide a solid phase extraction device.

A solid phase extraction device comprises an iron stand 1, a suction flask 2, an extraction column 3, an adjusting device 4, a drop number sensor 5, a computer terminal 6, a rubber tube 7 and a vacuum pump 8; the adjusting device 4 is provided with a glass dropper, the port of the glass dropper is fired and matched with the interface of the extraction column 3, so that the whole device is kept in a closed vacuum state, and the other end of the glass dropper on the adjusting device 4 is inserted into a suction filter bottle plug through a slotted hole on the drop number sensor 5 and enters the suction filter bottle 2; the data transmission line of the drop number sensor 5 is connected with a computer terminal 6; the side of the filter flask 2 is provided with a convex cylindrical pipe which is connected with a vacuum pump 8 through a rubber pipe 7.

Further, the data recording software of the drop number sensor 5 is installed in the computer terminal 6 in advance before the experiment.

Further, the adjusting device 4 can control the speed of activation and adsorption by adjusting the opening and closing size.

Further, the material of the adjusting device 4 is polytetrafluoroethylene.

The utility model has the advantages that: 1, a manual extrusion mode is eliminated, a plurality of devices can be operated at one time, time and labor are saved, and the experiment efficiency is greatly improved; 2, the drop number sensor automatically records the drop number and is connected with a computer terminal to carry out the whole experiment in a visible state, the flow rate is automatically controlled, and the result accuracy is higher than that of a centrifugal method and a direct vacuum method; 3 through connecting the vacuum pump that the laboratory is commonly used, reach above-mentioned effect, only need be equipped with cheap accessory and can have all method advantages concurrently, need not to purchase expensive solid phase extraction appearance, can reach the same effect, save the cost.

Drawings

Fig. 1 is a schematic structural diagram of the extraction device of the present invention.

In the figure: 1. an iron stand; 2. a suction flask; 3. an extraction column; 4. an adjustment device; 5. a drop number sensor; 6. a computer terminal; 7. a rubber tube; 8. a vacuum pump.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Example 1

A solid phase extraction device comprises an iron stand 1, a suction flask 2, an extraction column 3, an adjusting device 4, a drop number sensor 5, a computer terminal 6, a rubber tube 7 and a vacuum pump 8; the adjusting device 4 is provided with a glass dropper, the port of the glass dropper is fired and matched with the interface of the extraction column 3, so that the whole device is kept in a closed vacuum state, and the other end of the glass dropper on the adjusting device 4 is inserted into a suction filter bottle plug through a slotted hole on the drop number sensor 5 and enters the suction filter bottle 2; the data transmission line of the drop number sensor 5 is connected with a computer terminal 6; the side of the filter flask 2 is provided with a convex cylindrical pipe which is connected with a vacuum pump 8 through a rubber pipe 7. Wherein, before the experiment, the data recording software of the drop number sensor 5 is installed in the computer terminal 6 in advance; the adjusting device 4 is made of polytetrafluoroethylene, and the activation and adsorption speeds are controlled by adjusting the opening and closing sizes.

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

1. A solid phase extraction device is characterized by comprising an iron support (1), a filter flask (2), an extraction column (3), an adjusting device (4), a drop number sensor (5), a computer terminal (6), a rubber tube (7) and a vacuum pump (8); the adjusting device (4) is provided with a glass dropper, the port of the glass dropper is fired and matched with the interface of the extraction column (3), so that the whole device is kept in a closed vacuum state, and the other end of the glass dropper on the adjusting device (4) is inserted into a suction filter bottle plug through a slotted hole on the drop number sensor (5) and enters the suction filter bottle (2); the data transmission line of the drop number sensor (5) is connected with a computer terminal (6); the side surface of the filter flask (2) is provided with a convex cylindrical pipe which is connected with a vacuum pump (8) through a rubber pipe (7).

2. A solid phase extraction apparatus according to claim 1 wherein the drop number sensor (5) data logging software is installed in advance in the computer terminal (6) prior to the experiment.

3. A solid phase extraction apparatus according to claim 1, wherein the adjustment means (4) is adapted to control the rate of activation and adsorption by adjusting the size of the opening and closing.

4. A solid phase extraction apparatus according to claim 1 wherein the conditioning means (4) is of polytetrafluoroethylene.