CN209764783U

CN209764783U - Electrochemical device with magnetic enrichment and separation functions

Info

Publication number: CN209764783U
Application number: CN201920020503.3U
Authority: CN
Inventors: 王诗; 裴新月; 樊璨; 舒婷; 闵清
Original assignee: Hubei University of Science and Technology
Current assignee: Hubei University of Science and Technology
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2019-12-10
Anticipated expiration: 2029-01-07

Abstract

The utility model discloses an electrochemical device with magnetic enrichment and separation functions, which comprises a reaction tank, a base, a sealing pad and a magnet; the reaction tank is of a cylinder structure consisting of an inner layer and an outer layer, and the inner layer is nested in the outer layer; the outer layer is a cylinder body; the upper main body of the inner layer is cylindrical, and the bottom of the inner layer is of an inverted cone structure with a hole in the middle; the reaction tank is sleeved with a sealing pad; the reaction tank sleeved with the sealing pad is placed on the base; the base is provided with a clamping groove, and the magnet is inserted into the clamping groove. The utility model has the advantages that: 1) the magnetic nano material is used for enriching and concentrating heavy metal in electrochemical determination, so that the selectivity and sensitivity of the determination are improved; 2) the magnetic nano material simplifies the process of enriching and eluting pollutants in a water sample, is combined with electrochemical detection for use, and is easy to use and popularize.

Description

electrochemical device with magnetic enrichment and separation functions

Technical Field

The invention belongs to a detection device in the field of electrochemistry, and particularly relates to an electrochemical device with a magnetic enrichment separation function.

background

the water environment pollution has great harm to human bodies, animals and plants, and the development of a rapid on-site detection technology for mercury in the water environment has important significance in the fields of environmental protection, health medical treatment, food monitoring and the like. In recent years, analytical detection means for water environmental pollutants such as heavy metals have been remarkably developed, and methods such as inductively coupled plasma mass spectrometry, inductively coupled plasma emission spectrometry, atomic spectroscopy, X-ray, chromatography, and the like have been widely adopted. However, the above-mentioned equipment is expensive and complicated to operate. The electrochemical detection technology has the advantages of low instrument cost, high detection speed, convenience in operation, easiness in automation realization and the like, is widely applied to a plurality of fields of environment monitoring, biological sample analysis, food and drug monitoring and the like, but has poor selectivity, detection limit and sensitivity in heavy metal detection.

The magnetic nano material is a novel adsorption material, and compared with the traditional adsorbent, the magnetic nano material has high adsorption performance (large specific surface area) and super-strong magnetic separation performance, is easy to separate from wastewater under the action of an external magnetic field, is easy for adsorbate desorption, and can be recycled. Compared with the traditional adsorbent, the magnetic nanoparticles with the functional group modification on the surface have unique advantages in wastewater treatment, so that the application of the magnetic nanoparticles in the field of wastewater treatment is receiving more and more attention.

The magnetic nano material is introduced into electrochemical detection, and can be used for enriching and concentrating pollutants under the action of an external magnetic field and monitoring a water environment. However, in practical application, there is no suitable device for conveniently and rapidly combining the process of enriching and eluting the pollutants in the water sample by the magnetic nano material with electrochemical detection.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an electrochemical device with magnetism enrichment separation work ability.

The utility model provides a technical scheme as follows:

An electrochemical device with magnetic enrichment and separation functions comprises a reaction tank (1), a base (2), a sealing pad (3) and a magnet (5).

The reaction tank (1) is of a cylinder structure consisting of an inner layer (11) and an outer layer (12), and the inner layer (11) is nested in the outer layer (12); the outer layer (12) is a cylinder body; the upper main body of the inner layer (11) is cylindrical, and the bottom of the inner layer is of an inverted cone structure with a hole (13) in the middle.

the reaction tank (1) is sleeved with a sealing pad (3);

The reaction tank (1) sleeved with the sealing pad (3) is placed on the base (2);

The base (2) is provided with a clamping groove (4); the magnet (5) is inserted into the slot (4).

Specifically, the outer layer (12) of the reaction tank (1) is slightly higher than the inner layer (11).

Specifically, the sealing pad (3) is a gasket with a lantern ring.

specifically, the sealing pad (3) is made of an elastic material.

specifically, the base (2) is of a square structure.

The utility model has the advantages that:

(1) The reaction tank is designed in a double-layer mode, the inner layer is designed in a funnel mode, the reaction tank has the functions of enrichment and elution, and then the reaction tank is combined with electrochemical detection, so that the detection efficiency is improved;

(2) The magnetic nano material can be used for enriching and concentrating heavy metal in electrochemical determination, so that the selectivity and sensitivity of determination are improved;

(3) Simple structure, simplified operation and easy popularization.

drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the sealing pad;

FIG. 3 is a schematic view of the use of the present invention;

reference numerals: 1-reaction tank, 11-reaction tank inner layer, 12-reaction tank outer layer, 13-hole, 2-base, 3-sealing pad, 4-clamping groove, 5-magnet, 6-electrode.

Detailed Description

The present invention will be further described with reference to specific embodiments, but the present invention is not limited thereto.

fig. 1 shows the structure of the present invention. An electrochemical device with magnetic enrichment and separation functions comprises a reaction tank 1, a base 2, a sealing pad 3 and a magnet 5. The reaction tank 1 is of a cylinder structure consisting of an inner layer (11) and an outer layer (12), and the inner layer 11 is nested in the outer layer 12. The outer layer 12 is a cylinder body; the upper main body of the inner layer 11 is cylindrical, and the bottom is an inverted cone structure with a hole 13 in the middle. The outer layer 12 of the reaction cell 1 is slightly higher than the inner layer 11. Preferably, the inner layer and the outer layer of the reaction tank 1 are integrally formed or fixedly connected by welding.

The reaction tank 1 is sleeved with a sealing pad 3.

The base 2 is square and is used for placing the reaction tank 1. The base 2 is provided with a clamping groove 4; the magnet 5 is inserted into the card slot 4.

The sealing pad 3 is a gasket with a lantern ring, and the sealing pad 3 is made of elastic materials. Rubber, polydimethylsiloxane, is preferably used as the material. The lantern ring of the sealing gasket 3 is used for sleeving the outer layer of the reaction tank 1, sealing is guaranteed, and meanwhile the hole 13 in the inner layer of the reaction tank 1 can be blocked. The sealing gasket 3 is structured as shown in fig. 2.

Fig. 3 shows a schematic diagram of the usage status, and the usage method is as follows:

1) adding a water sample added with a Magnetic Nano Material (MNM) into a reaction tank 1 sleeved with a sealing pad 3, and attracting the magnetic nano material (MNM-HMs) which adsorbs Heavy Metal (HMs) in the water sample to one side of an inner layer 11 of the reaction tank 1 close to a magnet 5 to the maximum extent under the action of a side magnet 5;

2) Absorbing and removing a water sample adsorbed by the magnetic nano material in the reaction tank 1, separating the reaction tank 1 from the base 2, removing the sealing pad 3, moving the reaction tank 1 only with MNM-HMs to a position right above a reaction area (comprising a working electrode, an auxiliary electrode and a reference electrode) on the surface of the electrode 6, wherein the reaction area of the electrode 6 can be contained in an outer layer 12 of the reaction tank 1, and the magnet 5 is arranged below the electrode 6;

3) Adding eluent into the reaction tank 1, separating HMs from MNM-HMs by the eluent, and allowing the eluent containing concentrated HMs to flow to the surface of the electrode 6 through the hole 13 at the bottom of the inner layer 11 of the reaction tank; a cavity between the inner layer 11 and the outer layer 12 of the reaction tank forms a sample tank for containing eluent in the electrode 6;

4) The electrode 6 was connected to an electrochemical workstation and the HMs content in the eluate was determined electrochemically.

the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An electrochemical device with magnetic enrichment and separation functions is characterized in that:

Comprises a reaction tank (1), a base (2), a sealing pad (3) and a magnet (5);

The reaction tank (1) is of a cylinder structure consisting of an inner layer (11) and an outer layer (12), and the inner layer (11) is nested in the outer layer (12); the outer layer (12) is a cylinder body; the upper main body of the inner layer (11) is cylindrical, and the bottom of the inner layer is of an inverted cone structure with a hole (13) in the middle;

The reaction tank (1) is sleeved with a sealing pad (3);

2. The electrochemical device with magnetic enrichment and separation function of claim 1, wherein: the outer layer (12) of the reaction tank (1) is slightly higher than the inner layer (11).

3. The electrochemical device with magnetic enrichment and separation function of claim 1, wherein: the sealing pad (3) is a gasket with a lantern ring.

4. the electrochemical device with magnetic enrichment and separation function of claim 3, wherein: the sealing pad (3) is made of elastic material.

5. The electrochemical device with magnetic enrichment and separation function of claim 1, wherein: the base (2) is of a square structure.