CN203811569U - Small-size blocky carbon dioxide electrode - Google Patents
Small-size blocky carbon dioxide electrode Download PDFInfo
- Publication number
- CN203811569U CN203811569U CN201420209779.3U CN201420209779U CN203811569U CN 203811569 U CN203811569 U CN 203811569U CN 201420209779 U CN201420209779 U CN 201420209779U CN 203811569 U CN203811569 U CN 203811569U
- Authority
- CN
- China
- Prior art keywords
- electrode
- carbon dioxide
- small
- dioxide electrode
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Biological Materials (AREA)
Abstract
The utility model relates to a blood gas electrolyte analyzer, and particularly relates to a small-size blocky carbon dioxide electrode which is a hollow blocky body made of transparent organic glass, and a silver/silver chloride reference electrode is fixed inside a carbon dioxide electrode body in a bending manner; a pH inner electrode is obliquely arranged inside the carbon dioxide electrode body, a sensitive part is arranged on the head of the pH inner electrode, a hydrophobic gas-permeable membrane is arranged on the head of the pH inner electrode and is positioned at the bottom of the electrode body. The small-size blocky carbon dioxide electrode can effectively solve the problems that the bubbles entrained in a testing sample are accumulated at the top of an electrode flow cell, and tiny bubbles are accumulated between a sensitive membrane and the hydrophobic gas-permeable membrane of the pH inner electrode, so that the potential drift and positioning failure are caused when the carbon dioxide electrode is used for testing the sample, the condition that the electrode maintenance is performed by disassembling the pH inner electrode is avoided, the usage difficulty of the electrode and the maintenance cost of a user can be lowered, and the testing stability of the electrode can be enhanced.
Description
Technical field
The utility model relates to blood gas electrolyte analyzer, especially the carbon dioxide electrode in blood gas electrolyte analyzer.
Background technology
Partial pressure of carbon dioxide (the PCO of electrochemical principle
2) gas sensor (PCO
2electrode), be that pair of electrodes (pH electrode and Ag/AgCL contrast electrode) is contained in same outer tube, pipe end is equipped with a hydrophobic ventilated membrane, and electrolyte solution and external testing liquid in pipe are separated.The carbon dioxide dissolving in test fluid enters the electrolyte solution thin layer between electrode sensitive film and ventilated membrane in pH by ventilated membrane, makes to be measured by pH electrode in liquid layer
activity changes.Therefore, in pH, the potential difference (PD) of electrode and silver/silver chloride contrast electrode changes with the concentration of the carbon dioxide dissolving, and according to the current potential of measuring, can calculate the gas concentration lwevel (dividing potential drop) in testing sample.
Existing carbon dioxide electrode volume is all larger, the partial pressure of carbon dioxide that can not be applied to tens microlitre samples (as blood) is measured, and in pH, electrode test end group is all originally the top that is vertically placed in sample flow cell, if sample be entrained with during by flow cell bubble bubble be easy to be stacked into the top of flow cell, can have influence on the measurement of this sample of electrode pair in pH, cause carbon dioxide electrode potential drifting, calibrate unsuccessfully, sample test value forbidden.In addition, the vertical form of placing of electrode in this kind of pH, also can cause in carbon dioxide electrode internal electrolyte solution because electrode temperature changes the micro-bubble producing and be deposited in pH between electrode sensitive film and ventilated membrane and be not easy to get rid of, this situation can also cause the drift of carbon dioxide electrode appearance potential or calibration, sample test failure, therefore need interior electrode dismounting to safeguard processing, misoperation increases electrode use difficulty and user's maintenance cost, if also can cause carbon dioxide electrode directly to be scrapped.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of small-sized block carbon dioxide electrode, it can be for the carbon dioxide sampling of micro-example, and use electrode in slant setting pH, thereby reduce the potential drifting of carbon dioxide electrode, reduce maintenance cost.
In order to achieve the above object, the utility model proposes a kind of small-sized block carbon dioxide electrode.Concrete technical scheme is:
A kind of small-sized block carbon dioxide electrode, the hollow blocks of making for transparent organic glass, the bending of silver/silver chloride contrast electrode is fixed on carbon dioxide electrode body inside, be equipped with electrode in pH in carbon dioxide electrode body inner inclination, in this pH, electrode head is provided with sensitive part, in pH, electrode head is provided with hydrophobic permeable membrane, and hydrophobic permeable membrane is positioned at electrode body bottom.
Further, the sensitive part effective diameter that in described pH, electrode head is provided with is micron order.
Further, the sensitive part effective diameter that in described pH, electrode head is provided with is less than 1.5mm.
The utility model adopts the small-sized block carbon dioxide electrode of electrode in slant setting pH, following technique effect is improved: in the pH in carbon dioxide electrode, electrode adopts slant setting, can effectively solve bubble that test carries secretly in sample is deposited in electrode flow-through cell top and pH and piles up micro-bubble between electrode sensitive film and hydrophobic permeable membrane, while making carbon dioxide electrode test sample, failed problem is drifted about, calibrated to appearance potential, reduce electrode use difficulty and user's maintenance cost, improved the stability of electrode test.
Brief description of the drawings
Fig. 1 is the utility model carbon dioxide electrode example structure schematic diagram.
In figure: 1: carbon dioxide electrode body; 2: silver/silver chloride contrast electrode; 3: electrolyte solution; Electrode in 4:pH; 5: hydrophobic permeable membrane.
As shown in the figure, a kind of small-sized block carbon dioxide electrode 1, the hollow blocks of making for transparent organic glass, 2 bendings of silver/silver chloride contrast electrode are fixed on carbon dioxide electrode body inside, be equipped with electrode 4 in pH in carbon dioxide electrode body inner inclination, in this pH, electrode head is provided with sensitive part, and in pH, electrode head is provided with hydrophobic permeable membrane 5, and hydrophobic permeable membrane is positioned at electrode body bottom.
The inside of described carbon dioxide electrode body is filled with electrolyte solution 3, and in this solution
constant.
In described pH, electrode incline is placed in carbon dioxide electrode body inside, is soaked in electrolyte solution, and in pH, the effective diameter at electrode sensitive position is less than 1.5mm, and in 4 pH, electrode head is provided with hydrophobic permeable membrane.
In the time that electrode uses, sample contacts with hydrophobic permeable membrane through flow cell, can sample.The carbon dioxide dissolving in sample enters the electrolyte solution thin layer between sensitive membrane and the hydrophobic permeable membrane of electrode head in pH by hydrophobic permeable membrane, measure the gas concentration lwevel in sample by electrode in pH.Because the sensitive membrane effective diameter of electrode head in pH is less than 1.5mm, only need a small amount of sample just can reach sampling object, therefore the utility model can be used for the carbon dioxide concentration measurement of tens microlitre samples (as blood).
Small-sized block carbon dioxide electrode of the present utility model is owing to adopting the form of electrode in slant setting pH, can effectively solve bubble that test carries secretly in sample is deposited in electrode flow-through cell top and pH and piles up micro-bubble between electrode sensitive film and hydrophobic permeable membrane, while making carbon dioxide electrode test sample, failed problem is drifted about, calibrated to appearance potential, exempt and need to dismantle electrode in pH and carry out electrodes maintenance, reduce electrode use difficulty and user's maintenance cost, improved the stability of electrode test.
Concrete data see table.
Carbon dioxide electrode stability test
Table 1
Table 2
1#, 2#, 3# in table one are the carbon dioxide electrode of vertical electrodes inner core, can find out that maximal value and minimum difference are larger in stability test, and stability S data are more undesirable.
4#, 5# in table two, 6# are the carbon dioxide electrode of electrode in the slant setting pH described in the present invention, can find out that between maximal value and minimum value, difference is very little, stability S data are greatly improved, and can prove that the present invention has improved the stability of carbon dioxide electrode test sample.
Claims (3)
1. a small-sized block carbon dioxide electrode, is the hollow blocks that transparent organic glass is made, and the bending of silver/silver chloride contrast electrode is fixed on carbon dioxide electrode body inside; It is characterized in that, be equipped with electrode in pH in carbon dioxide electrode body inner inclination, in this pH, electrode head is provided with sensitive part, and in pH, electrode head is provided with hydrophobic permeable membrane, and hydrophobic permeable membrane is positioned at electrode body bottom.
2. the small-sized block carbon dioxide electrode of one according to claim 1, is characterized in that, the sensitive part effective diameter that in described pH, electrode head is provided with is micron order.
3. the small-sized block carbon dioxide electrode of one according to claim 1 and 2, is characterized in that, the sensitive part effective diameter that in described pH, electrode head is provided with is less than 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209779.3U CN203811569U (en) | 2014-04-28 | 2014-04-28 | Small-size blocky carbon dioxide electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420209779.3U CN203811569U (en) | 2014-04-28 | 2014-04-28 | Small-size blocky carbon dioxide electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811569U true CN203811569U (en) | 2014-09-03 |
Family
ID=51450303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420209779.3U Expired - Fee Related CN203811569U (en) | 2014-04-28 | 2014-04-28 | Small-size blocky carbon dioxide electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811569U (en) |
-
2014
- 2014-04-28 CN CN201420209779.3U patent/CN203811569U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10451455B2 (en) | Wireless sensor for detection and measurement of properties in liquids over an internet-based network | |
| CN101639457A (en) | Application of screen printing electrode in the determination of 5-hydroxytryptamine | |
| CN103837662A (en) | Measuring device and method of hydraulic characteristic parameters of unsaturated soil in moisture absorption/desorption path | |
| CN104597090A (en) | Enzyme-free potentiometric glucose sensor and detection method thereof | |
| CN105319250A (en) | Carbon dioxide biochemical analysis dry plate and preparation method thereof | |
| US10317359B2 (en) | Differential carbon dioxide sensor | |
| CN203811569U (en) | Small-size blocky carbon dioxide electrode | |
| CN205506744U (en) | Glucose biosensor | |
| CN201837609U (en) | ORP detection bottle | |
| CN107238640B (en) | Micro flow cell for use with microdialysis device | |
| CN201803983U (en) | Sensor electrode of blood gas electrolytic analyzer | |
| CN201555825U (en) | Small-sized flat-head PCO2 electrode | |
| CN203772797U (en) | Small blocky oxygen electrode using silver reference electrode | |
| CN104483368B (en) | Portable electrolyte analysis device with blood sampling micro-needle array | |
| CN203606314U (en) | Ion electrode structure | |
| CN107505244A (en) | A kind of Dispersion Test method suitable for hypotonicity soil | |
| CN203606315U (en) | Portable water quality hardness detection device | |
| CN201540269U (en) | Small-sized flat-tip PO2 electrode | |
| CN204925023U (en) | Electrochemical detection pond | |
| CN201885997U (en) | Chlorine ion micro electrode | |
| CN212622377U (en) | Online carbon dioxide gas-sensitive electrode | |
| CN206248606U (en) | A kind of measuring electrode for detecting uric acid | |
| CN205067471U (en) | Nuclear track membrane solution concentration detection appearance | |
| CN104458852A (en) | Silk-screen printing electrode and application | |
| CN205229092U (en) | Quick electrode of portable carbon dioxide gas improvement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |