CN215931369U - Quick collection system of aquatic ion - Google Patents
Quick collection system of aquatic ion Download PDFInfo
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- CN215931369U CN215931369U CN202121908490.7U CN202121908490U CN215931369U CN 215931369 U CN215931369 U CN 215931369U CN 202121908490 U CN202121908490 U CN 202121908490U CN 215931369 U CN215931369 U CN 215931369U
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Abstract
The utility model discloses a device for rapidly collecting ions in water, belongs to the technical field of gradient diffusion films, and solves the problems of long sampling time and low efficiency of the existing underwater DGT device. Aquatic ion quick collection system includes: a parallel electric field generating assembly configured to generate a stable parallel electric field; a DGT sampler disposed within the parallel electric field. The utility model accelerates the ion adsorption process by increasing the electric field, thereby improving the sampling efficiency of ions in water.
Description
Technical Field
The utility model relates to the technical field of gradient diffusion films, in particular to a device for rapidly collecting ions in water.
Background
The DGT (differential diffusion in Thin-films) technology mainly utilizes Fick's first diffusion law to obtain the information of effective state content and space distribution, ionic state-complex state binding kinetics and solid-liquid exchange kinetics of elements in an environmental medium by researching the gradient diffusion and the buffering kinetic process of the elements in a DGT diffusion layer. DGT technology can be applied to many aspects of research in the environment, including: the geochemical characteristics of the sediment, the monitoring of water quality, the dynamic process of ions to be detected on the DGT and soil interface, the biological effectiveness of heavy metals and the like.
The existing DGT device is formed by overlapping a fixed layer (namely a fixed membrane) and a diffusion layer (namely a diffusion membrane and a filter membrane), target ions pass through the diffusion layer in a free diffusion mode, are immediately captured by the fixed membrane, and form linear gradient distribution on the diffusion layer, the whole adsorption process takes a long time, the collection efficiency is low, and water sample collection is difficult to complete in a short time.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the present invention aims to provide a device for rapidly collecting ions in water, so as to solve the problems of long sampling time and low efficiency of the existing underwater DGT device.
The purpose of the utility model is mainly realized by the following technical scheme:
a device for rapidly collecting ions in water comprises:
a parallel electric field generating assembly configured to generate a stable parallel electric field;
and the DGT sampler is arranged in a parallel electric field.
Further, the parallel electric field generating assembly comprises an anode, a cathode and a direct current power supply, wherein the anode and the cathode are respectively connected with the anode and the cathode of the direct current power supply.
Further, the axis of the DGT sampler is arranged parallel to the electric field lines of the parallel electric field.
Furthermore, the DGT sampler comprises a shell, and a filtering membrane, a diffusion layer and an adsorption layer are coaxially and sequentially arranged in the shell.
Furthermore, the device for rapidly collecting ions in water also comprises a frame for fixedly mounting the DGT sampler and the parallel electric field generating assembly.
Further, the frame is provided with an installation space, the DGT sampler and the parallel electric field generating assembly are installed in the installation space, and the installation space is communicated with the water body.
Further, the DGT sampler is connected with the frame through a fixed sleeve, and the axis of the fixed sleeve is arranged in parallel to the electric field lines of the parallel electric field.
Further, the parallel electric field generating assembly is connected with the frame through an electrode connecting piece.
Further, the DGT sampler is detachably connected with the fixed sleeve.
Furthermore, the anode and the cathode both adopt a mesh platinum electrode plate.
Compared with the prior art, the parallel electric field generating assembly generates the stable parallel electric field in the adsorption environment of the DGT sampler, so that the mobility of metal ions in the water body is increased, more ions can be adsorbed within the same time, the experimental process is accelerated, certain active adsorption modes of organisms can be simulated, and the parallel electric field generating assembly has wide application prospect.
In the utility model, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the utility model, wherein like reference numerals are used to designate like parts throughout.
FIG. 1 is a first schematic structural diagram of a rapid water ion collecting device in an embodiment;
FIG. 2 is a schematic structural diagram II of a rapid ion collection device in water according to an embodiment;
FIG. 3 is a third schematic structural view of a rapid ion collection device in water according to an embodiment;
FIG. 4 is a perspective view of the device for rapidly collecting ions in water in the embodiment;
fig. 5 is a schematic structural diagram of a rapid ion collection device in water in an embodiment.
Reference numerals:
100. a DGT sampler; 1001. a filtration membrane; 1002. a diffusion layer; 1003. an adsorption layer; 1004. a housing; 200. an anode; 300. a cathode; 400. a direct current power supply; 500. a frame; 5001. an electrode connecting member; 5002. and (5) fixing the sleeve.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the utility model and together with the description, serve to explain the principles of the utility model and not to limit the scope of the utility model.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.
Another embodiment of the present invention discloses a device for rapidly collecting ions in water, as shown in fig. 1 to 5, including:
a parallel electric field generating assembly configured to generate a stable parallel electric field;
Compared with the prior art, the quick collection system of aquatic ion that this embodiment provided, simple structure through add parallel electric field outside traditional DGT sample thief for the DGT sample thief is arranged in a stable parallel electric field environment, has increased metal ion's mobility in the water, can adsorb more ions in the same time, accelerates the experiment process.
In this embodiment, the parallel electric field generating assembly includes an anode 200, a cathode 300 and a dc power supply 400, wherein the anode 200 and the cathode 300 are disposed in parallel and are respectively connected to the positive electrode and the negative electrode of the dc power supply 400.
Further, the electric field lines of the parallel electric field are parallel to the axis of the DGT sampler 100, so as to improve the adsorption efficiency and the adsorption amount of the ions.
In this embodiment, the DGT sampler 100 includes a housing 1004, and a filter membrane 1001, a diffusion layer 1002, and an adsorption layer 1003 are coaxially and sequentially disposed in the housing 1004.
In this embodiment, 1 or more DGT samplers may be disposed within the parallel electric field.
As shown in fig. 3, 1 DGT sampler is arranged in the parallel electric field, so that cations migrate from the positive electrode to the negative electrode of the electric field along the direction of the electric field, and a concentration diffusion gradient is superimposed to increase the amount of cations adsorbed by the adsorption layer compared with the case of no electric field; the anion is relatively reduced; neutral molecules are not affected by the electric field and the amount of adsorption is the same as in the absence of the electric field.
As shown in fig. 2 to 5, 2 DGT samplers are arranged in a parallel electric field, and two DGT sampling devices are oppositely and respectively arranged at the positive pole and the negative pole of the electric field, so that the anion adsorption amount is increased and the cation adsorption amount is decreased in the DGT adsorption layer near the positive pole; in the DGT adsorption layer near the negative electrode, the cation adsorption amount is increased, and the anion adsorption amount is reduced; for neutral molecules, the adsorption capacity of the DGT adsorption layer near the positive pole and the negative pole is not changed. Through setting up two DGT samplers, can distinguish the zwitterion, and through the mobility difference of the element of different chemical forms in the electric field, can distinguish it, be an efficient chemical form analysis means.
Specifically, the number of the DGT samplers 100 is two, and the first DGT sampler and the second DGT sampler are coaxially disposed. The two samplers 100 are preferably arranged in two ways:
in a first arrangement, the filter membrane 1001 of the first DGT sampler is positioned opposite the filter membrane 1001 of the second DGT sampler, with the adsorbent layer 1003 of the first DGT sampler facing the anode 200 and the adsorbent layer 1003 of the second DGT sampler facing the cathode 300. The first DGT sampler adsorbs anions in the water body, and the second DGT sampler adsorbs metal cations in the water body.
In a second arrangement, the adsorbent layer 1003 of the first DGT sampler is positioned opposite the adsorbent layer 1003 of the second DGT sampler, with the filter membrane 1001 of the first DGT sampler facing the anode 200 and the filter membrane 1001 of the second DGT sampler facing the cathode 300. The first DGT sampler adsorbs metal cations in the water body, and the second DGT sampler adsorbs anions in the water body.
In an optional implementation manner of this embodiment, the device for rapidly collecting ions in water further includes a frame 500, the frame 500 has an installation space, the installation space is communicated with a water body, and the DGT sampler 100 and the parallel electric field generating assembly are installed in the installation space. The installation stability of the components is raised by the frame 500 to improve the DGT sampler 100 and the parallel electric field, so that the axis of the DGT sampler 100 is always parallel to the electric field lines of the parallel electric field, the relative stable position relationship between the DGT sampler 100 and the parallel electric field is ensured, and the adsorption efficiency is ensured.
Further, the DGT sampler 100 is connected to the frame 500 through a fixed sleeve 5002, an axis of the fixed sleeve 5002 is arranged parallel to the electric field lines of the parallel electric field; the parallel electric field generating element is connected to the frame 500 through the electrode connection 5001.
To facilitate replacement and disassembly of the DGT sampler 100, the DGT sampler is detachably connected to the fixed sleeve 5002. Illustratively, the first and second DGT samplers are threaded into both ends of the fixed sleeve 5002. The first DGT sampler and the second DGT sampler have the same structure, the outer shell 1004 of the DGT sampler is provided with external threads, the fixed sleeve 5002 is provided with internal threads, and the external threads of the outer shell 1004 are matched with the external threads of the fixed sleeve 5002. Adopt threaded connection mode, the dismouting of being convenient for promotes test efficiency.
In an optional implementation manner of this embodiment, the anode 200 and the cathode 300 both use a mesh platinum electrode plate, and the area of the mesh platinum electrode plate is larger than the axial area of the DGT sampler 100, so that the mesh platinum electrode plate has good stability and better electric field stability.
When the quick collection system of aquatic ion of utilizing this embodiment carries out water sample collection, including following operating procedure:
the rapid collecting device for ions in water is fixed in a water body, a parallel electric field is generated in the area where the DGT sampler 100 is located by the parallel electric field generating assembly, and the adsorption layer 1003 of the DGT sampler 100 adsorbs metal elements in water.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a quick collection system of aquatic ion which characterized in that includes:
a parallel electric field generating assembly configured to generate a stable parallel electric field;
a DGT sampler (100), the DGT sampler (100) being placed within a parallel electric field.
2. The device for rapidly collecting ions in water as claimed in claim 1, wherein the parallel electric field generating assembly comprises an anode (200), a cathode (300) and a direct current power supply (400), and the anode (200) and the cathode (300) are respectively connected with the positive pole and the negative pole of the direct current power supply (400).
3. The rapid aquatic ion collecting device according to claim 2, wherein the axis of the DGT sampler (100) is arranged parallel to the electric field lines of the parallel electric field.
4. The device for rapidly collecting ions in water as claimed in claim 3, wherein the DGT sampler (100) comprises a housing (1004), and a filtering membrane (1001), a diffusion layer (1002) and an adsorption layer (1003) are coaxially and sequentially arranged in the housing (1004).
5. The rapid aquatic ion collecting device according to any one of claims 2 to 4, further comprising a frame (500) for fixedly mounting the DGT sampler (100) and the parallel electric field generating assembly.
6. The rapid aquatic ion collecting device according to claim 5, wherein the frame (500) has an installation space, the DGT sampler (100) and the parallel electric field generating assembly are installed in the installation space, and the installation space is communicated with a water body.
7. The rapid aquatic ion collecting device according to claim 6, wherein the DGT sampler (100) is connected to the frame (500) by a fixed sleeve (5002), and the axis of the fixed sleeve (5002) is arranged parallel to the electric field lines of the parallel electric field.
8. The rapid aquatic ion collection device of claim 7, wherein the parallel electric field generation assembly is connected to the frame (500) by an electrode connection (5001).
9. The rapid collection device of ions in water of claim 8, wherein the DGT sampler is detachably connected with the fixed sleeve (5002).
10. The device for rapidly collecting ions in water as claimed in any one of claims 2 to 4 and 6 to 9, wherein a mesh platinum electrode plate is adopted for both the anode (200) and the cathode (300).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121908490.7U CN215931369U (en) | 2021-08-16 | 2021-08-16 | Quick collection system of aquatic ion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121908490.7U CN215931369U (en) | 2021-08-16 | 2021-08-16 | Quick collection system of aquatic ion |
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| CN215931369U true CN215931369U (en) | 2022-03-01 |
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| CN202121908490.7U Active CN215931369U (en) | 2021-08-16 | 2021-08-16 | Quick collection system of aquatic ion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607605A (en) * | 2021-08-16 | 2021-11-05 | 国家地质实验测试中心 | System and method for rapidly collecting ions in water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113607605A (en) * | 2021-08-16 | 2021-11-05 | 国家地质实验测试中心 | System and method for rapidly collecting ions in water |
| CN113607605B (en) * | 2021-08-16 | 2024-02-09 | 国家地质实验测试中心 | System and method for rapidly collecting ions in water |
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