CN208366905U - A kind of channel electrode suitable for ion detection - Google Patents
A kind of channel electrode suitable for ion detection Download PDFInfo
- Publication number
- CN208366905U CN208366905U CN201820675912.2U CN201820675912U CN208366905U CN 208366905 U CN208366905 U CN 208366905U CN 201820675912 U CN201820675912 U CN 201820675912U CN 208366905 U CN208366905 U CN 208366905U
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- electrode
- electrolytic cell
- support plate
- cell support
- sample
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Abstract
The utility model discloses a kind of channel electrode suitable for ion detection, electrolytic cell support plate is equipped with reference electrode slot, working electrode groove, sample outlet hole and sample holes, and sample outlet hole is connected to reference electrode slot, and sample holes run through electrolytic cell support plate；Gasket is between electrolytic cell support plate and fixed plate；Through-hole and electrolytic cell support plate and fixed plate on gasket cooperatively form electrolyte chamber；Working electrode and reference electrode correspondence are installed in working electrode groove and reference electrode slot；Fixed plate is located to electrode and is drawn by conducting wire；Working electrode groove is connected to electrode, sample outlet hole and sample holes with electrolyte chamber, and electrolyte is full of in electrolyte chamber, sample outlet hole and sample holes, forms working electrode, reference electrode and the three electrolysis systems to electrode.When the utility model at work, the current density of working electrode surface is evenly distributed, and the area utilization of working electrode is high, and ohm potential drop is small, is conducive to the detection to ion.
Description
Technical field
The utility model belongs to channel electrode technical field, and in particular to a kind of flowing electrolysis suitable for ion detection
Pond.
Background technique
Thin-Layer Electrolytic Cell is utilized at the twentieth century initial stage sixties first, and the liquor capacity of very little is limited in electricity by it
In one thin layer of pole surface, by reducing the volume of measurement liquid to increase electrode surface area and measuring the volume ratio of liquid, therefore
Only need the very short time that can be electrolysed completely sample.There was only working electrode in the thin layer room of the thin layer cell of earlier report, and joins
It is placed on outside thin layer room than electrode and to electrode, this design is disadvantageous in that non-caused by serious uneven current distribution
Linear potential.Later, researcher improved the structure of thin layer cell, and working electrode and reference electrode are placed in thin layer room,
And electrode is placed on outside thin layer room, the adverse effect of the non-linear potential of former structure bring can be eliminated.Also there is researcher
By working electrode, reference electrode and electrode is placed in thin layer room, it is noted that electricity when designing such thin layer cell
Certain distance is kept between pole and working electrode, avoids the interference between two diffusion layers.
Working electrode and to the area utilization of the relative position of electrode and the distribution of current density and working electrode all
There is close relationship.In the location arrangements of electrode, most of designer's selection is being flowed working electrode and to electrode
It is in staggered distribution in electrolytic cell, primarily to avoiding the interference to electrode reaction product, but the electrolytic cell of this structure is in performance
On have the shortcomings that it is some inevitable: (1) working electrode surface current density is unevenly distributed；(2) solution ohm potential drop
Greatly；(3) area utilization of working electrode is low, therefore influences the sensitivity of electrode and the linear model of electrolytic efficiency and concentration mensuration
It encloses.
In addition, to electrode all very littles used in many channel electrodes, and too small working electrode table will lead to electrode
The electric field in face is uneven, and marginalisation is lower to the bioaccumulation efficiency of detection ion than more serious, also will affect the sensitivity of detection.
Utility model content
It is a kind of suitable for ion detection the purpose of the utility model is to overcome providing in place of the deficiencies in the prior art
Channel electrode can make the field distribution of working electrode surface uniform, and current density is evenly distributed, and improves working electrode
Area utilization reduces ohm potential drop, improves the bioaccumulation efficiency of detection ion, is conducive to improve detection sensitivity, expands inspection
Range is surveyed, the application range of channel electrode is expanded.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of channel electrode suitable for ion detection, comprising:
Electrolytic cell support plate which is provided with horizontally disposed reference electrode slot and working electrode groove, the axis of reference electrode slot
The axis of line and working electrode groove is parallel to each other, and working electrode groove runs through electrolytic cell support plate；It is also set in the electrolytic cell support plate
There are sample outlet hole and horizontally disposed sample holes, sample outlet hole is connected to reference electrode slot, and sample holes are parallel to reference electrode fluted shaft line
Direction is arranged and runs through electrolytic cell support plate；The position of sample outlet hole opening is higher than the position of sample holes opening；
Fixed plate is installed in electrolytic cell support plate；
Gasket is fixed between electrolytic cell support plate and fixed plate；Through-hole is provided on gasket, the through-hole and gasket two sides
Electrolytic cell support plate and fixed plate complement each other to form the electrolyte chamber of sealing；
Working electrode is installed in working electrode groove；
Reference electrode is installed in reference electrode slot；
To electrode, it is installed in fixed plate and is drawn by conducting wire；
It is the working electrode groove, corresponding with the position of the through-hole on gasket to the position of electrode, sample outlet hole and sample holes
And be connected with the electrolyte chamber, it is full of electrolyte in electrolyte chamber, sample outlet hole and sample holes, forms working electrode, reference electricity
Pole and three electrolysis systems to electrode.
In one embodiment: a part of the sample outlet hole is by reference electrode trench bottom along the side of vertical reference electrode fluted shaft line
To electrolytic cell support plate is extended upward through, another part of sample outlet hole is by reference electrode trench bottom along the direction of reference electrode fluted shaft line
Through electrolytic cell support plate.
In one embodiment: the working electrode groove is between reference electrode slot and sample holes.
In one embodiment: the through-hole is ellipse.
In one embodiment: described is ellipse to electrode, and is not more than the area of the through-hole to the area of electrode.
In one embodiment: further including pedestal, the electrolytic cell support plate is installed on pedestal；In the electrolytic cell support plate
Equipped with several fixed links, the gasket and fixed plate are installed in electrolytic cell support plate by several fixed links；The fixation
The fixing piece for being fastened and fixed plate, gasket and electrolytic cell support plate is additionally provided on bar.
In one embodiment: the electrolytic cell support plate is made of polyether-ether-ketone resin；The fixed plate is polyether-ether-ketone tree
Rouge is made；The gasket is made of polytetrafluoroethylene (PTFE).
In one embodiment: the working electrode is glass-carbon electrode；Described is platinum electrode to electrode.
In one embodiment: the spacer thickness is 0.5~3mm.
In one embodiment: the aperture of the sample outlet hole is 0.8~1.2mm；The aperture of the sample holes is 0.8~1.2mm；
Described is the ellipse of 10~14mm of long axis, 5~7mm of short axle to electrode；The through-hole is 14~18mm of long axis, 7~9mm of short axle
Ellipse.
The technical program compared with the background art, it has the following advantages:
1) biggish the current density of working electrode surface to be more evenly distributed electrode, the area of working electrode utilizes
Rate is bigger, is conducive to the enrichment for detecting ion, is conducive to improve detection sensitivity, is conducive to expand detection range, expands stream
The application range of dynamic electrolytic cell；
2) thickness of diffusion layer is generally acknowledged that less than 50 μm, and the thickness of gasket is much larger than 50 μm, i.e., to electrode and work
The distance of electrode is much larger than the thickness of diffusion layer, can influence to avoid diffusion layer to detection, reduce the influence to electrode product；
3) working electrode is vis-a-vis distributed in electrolytic cell with to electrode, shortens the relative distance of two electrodes, can be with
Reduce the ohmic voltage drop generated due to electrolyte, so that detection is more accurate；
4) stirring then can be replaced with the flowing of liquid using channel electrode, simplifies experimental provision；It can facilitate simultaneously
The update for detecting sample, reduces the interference of local concentration；
5) liquid enters from the lower sample holes in position, from the higher sample outlet hole outflow in position, even if containing gas in solution
Bubble will not rest in electrolytic cell cavity；
6) electrochemical signals response is stable and sensitive.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the channel electrode structural schematic diagram (vertical view) suitable for ion detection of the utility model.
Fig. 2 is the schematic top plan view of the electrolytic cell support plate of the utility model.
Fig. 3 is the schematic side view of the electrolytic cell support plate of the utility model.
Fig. 4 is the schematic elevation view of the electrolytic cell support plate of the utility model.
Fig. 5 is the schematic elevation view of the fixed plate of the utility model.
Fig. 6 is the schematic side view of the fixed plate of the utility model.
Fig. 7 is the schematic elevation view of the gasket of the utility model.
Appended drawing reference: electrolytic cell support plate 1, reference electrode slot 2, reference electrode 3, working electrode groove 4, working electrode 5, into
Sample hole 6, sample outlet hole 7, fixed link 8, fixing piece 9, gasket 10, through-hole 11, to electrode 12, conducting wire 13, fixed plate 14, pedestal 15.
Specific embodiment
The content of the utility model is illustrated below by embodiment:
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as " cross ", " perpendicular ", "top", "bottom", "inner", "outside" is based on shown in the perspective view in attached drawing
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.
Please refer to Fig. 1 to Fig. 7, a kind of channel electrode suitable for ion detection, comprising:
Pedestal 15；
Electrolytic cell support plate 1 can be made of polyether-ether-ketone (PEEK) resin, be installed in pedestal 15；Electrolytic cell support
The side of plate 1 is equipped with horizontally disposed reference electrode slot 2 and working electrode groove 4, the axis and working electrode of the reference electrode slot 2
The axis of slot 4 is parallel to each other, which runs through electrolytic cell support plate 1；Sample is additionally provided with out in the electrolytic cell support plate 1
Hole 7 and horizontally disposed sample holes 6；7 aperture 1mm of sample outlet hole, be connected to reference electrode slot 2, a part by reference electrode slot 2
Bottom center extends upward through electrolytic cell support plate 1 along the direction of vertical 2 axis of reference electrode slot, and another part is by reference electrode slot
2 bottom centers run through electrolytic cell support plate 1 to the other side of electrolytic cell support plate 1 along the direction of 2 axis of reference electrode slot；Sample introduction
6 aperture 1mm of hole is parallel to 2 axis direction of reference electrode slot and arranges and run through electrolytic cell support plate 1；Working electrode groove 4
Between reference electrode slot 2 and sample holes 6；Sample holes 6 and sample outlet hole 7 are respectively that sample offer flows into and out the logical of electrolytic cell
Road, and sample outlet hole 7 is higher than sample holes 6 in the position that 1 top surface of electrolytic cell support plate is open and opens on 1 surface of electrolytic cell support plate
The position of mouth；The threaded fixed link 8 of several stainless steels is additionally provided in the electrolytic cell support plate 1；
Fixed plate 14 can be made of polyether-ether-ketone (PEEK) resin, and fixed plate 14 passes through fixed link 8 and passes through fixing piece
9 (such as cap nuts) are fixed in 1 other side of electrolytic cell support plate；
Working electrode 5 is screwed onto working electrode groove 4 for the glass-carbon electrode for carving threaded diameter 3mm；
Reference electrode 3 is screwed in reference electrode slot 2；
It is platinum electrode, ellipse, long axis 12mm, short axle 6mm are embedded in and are installed in fixed plate 14 and by leading to electrode 12
Line 13 is drawn；
Gasket 10 can be made of polytetrafluoroethylene (PTFE), and thickness can be 0.5~3mm；Gasket 10 passes through fixed link 8 and is installed in
Electrolytic cell support plate 1 and gasket 10 is between electrolytic cell support plate 1 and fixed plate 14 is provided with the logical of ellipse on gasket 10
The electrolytic cell support plate 1 and fixed plate 14 of hole 11, the through-hole 11 and 10 two sides of gasket complement each other to form the electrolyte chamber of sealing；It is logical
Long axis 16mm, the short axle 8mm in hole 11, size enough by working electrode groove 4, to electrode 12, sample outlet hole 7 and sample holes 6 simultaneously
It covers, so that working electrode groove 4, opposite with the position of the through-hole 11 to the position of electrode 12, sample outlet hole 7 and sample holes 6
It answers and can be connected with electrolyte chamber；It is full of electrolyte in electrolyte chamber, sample outlet hole 7 and sample holes 6, forms working electrode 5, reference
Electrode 3 and three electrolysis systems to electrode 12.
The utility model in-site installation and usage mode are as follows:
Installation: 1) screwing in working electrode groove 4 for working electrode 5, and reference electrode 3 is screwed in reference electrode slot 2；
2) gasket 10 is inserted in fixed link 8；
3) fixed plate 14 is inserted in fixed link 8, then fixed plate 14 is locked with fixing piece 9, compression electrolytic cell support plate 1,
Gasket 10 and fixed plate 14 prevent solution leakage convenient for forming the electrolyte chamber of sealing.
Use: sample provides power by syringe pump or peristaltic pump, and the ellipse hole 11 of gasket 10 is entered from sample holes 6
In；In the three electrolysis systems formed to electrode 12, reference electrode 3 and working electrode 5, using stripping voltammetry, pass through
Extra electric field makes metal ion deposit and dissolve out on working electrode 5.Final sample is flowed out from sample outlet hole 7.
The purpose of this utility model is by using large area to electrode 12, and when work makes 5 surface of working electrode
Current density is more evenly distributed, and the area utilization of working electrode 5 is bigger, is conducive to the enrichment for detecting ion.Using flowing electricity
Xie Chi then can replace stirring with the flowing of liquid, simplify experimental provision.Working electrode 5 and reference electrode 3 are not to fix not
It is dynamic, it can easily replace as needed.Whole device can be made more by screwing cap nut in screwed fixed link 8
Sealing.
The above, only the utility model preferred embodiment, therefore, it cannot be limited according to, and the utility model is implemented
It is practical new to should still belong to this for range, i.e., equivalent changes and modifications made according to the scope of the patent of the utility model and the content of the manual
In the range of type covers.
Claims (10)
1. a kind of channel electrode suitable for ion detection, it is characterised in that: include:
Electrolytic cell support plate, which is provided with horizontally disposed reference electrode slot and working electrode groove, the axis of reference electrode slot and
The axis of working electrode groove is parallel to each other, and working electrode groove runs through electrolytic cell support plate；It is additionally provided with out in the electrolytic cell support plate
Sample hole and horizontally disposed sample holes, sample outlet hole are connected to reference electrode slot, and sample holes are parallel to reference electrode slot axis direction
It arranges and runs through electrolytic cell support plate；The position of sample outlet hole opening is higher than the position of sample holes opening；
Fixed plate is installed in electrolytic cell support plate；
Gasket is fixed between electrolytic cell support plate and fixed plate；Through-hole is provided on gasket, the electricity of the through-hole and gasket two sides
Solution pond support plate and fixed plate complement each other to form the electrolyte chamber of sealing；
Working electrode is installed in working electrode groove；
Reference electrode is installed in reference electrode slot；
To electrode, it is installed in fixed plate and is drawn by conducting wire；
It is the working electrode groove, corresponding and equal with the position of the through-hole on gasket to the position of electrode, sample outlet hole and sample holes
Be connected with the electrolyte chamber, electrolyte be full of in electrolyte chamber, sample outlet hole and sample holes, formed working electrode, reference electrode and
To three electrolysis systems of electrode.
2. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: the one of the sample outlet hole
Part extends upward through electrolytic cell support plate along the direction of vertical reference electrode fluted shaft line by reference electrode trench bottom, sample outlet hole it is another
A part runs through electrolytic cell support plate along the direction of reference electrode fluted shaft line by reference electrode trench bottom.
3. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: the working electrode groove
Between reference electrode slot and sample holes.
4. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: the through-hole is ellipse
Shape.
5. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: described is ellipse to electrode
Circle, and it is not more than the area of the through-hole to the area of electrode.
6. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: it further include pedestal, institute
Electrolytic cell support plate is stated to be installed on pedestal；The electrolytic cell support plate is equipped with several fixed links, the gasket and fixed plate
It is installed in electrolytic cell support plate by several fixed links；Be additionally provided in the fixed link for be fastened and fixed plate, gasket with
The fixing piece of electrolytic cell support plate.
7. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: the electrolytic cell support
Plate is made of polyether-ether-ketone resin；The fixed plate is made of polyether-ether-ketone resin；The gasket is made of polytetrafluoroethylene (PTFE).
8. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: the working electrode is
Glass-carbon electrode；Described is platinum electrode to electrode.
9. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: the spacer thickness is
0.5~3mm.
10. the channel electrode according to claim 1 suitable for ion detection, it is characterised in that: the sample outlet hole
Aperture is 0.8~1.2mm；The aperture of the sample holes is 0.8~1.2mm；Described is 10~14mm of long axis, short axle 5 to electrode
The ellipse of~7mm；The through-hole is the ellipse of 14~18mm of long axis, 7~9mm of short axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820675912.2U CN208366905U (en) | 2018-05-07 | 2018-05-07 | A kind of channel electrode suitable for ion detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820675912.2U CN208366905U (en) | 2018-05-07 | 2018-05-07 | A kind of channel electrode suitable for ion detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208366905U true CN208366905U (en) | 2019-01-11 |
Family
ID=64934095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820675912.2U Expired - Fee Related CN208366905U (en) | 2018-05-07 | 2018-05-07 | A kind of channel electrode suitable for ion detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208366905U (en) |
-
2018
- 2018-05-07 CN CN201820675912.2U patent/CN208366905U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 Termination date: 20210507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |