CN1040866A - Detect the sensor of sulfuretted hydrogen in the atmosphere - Google Patents
Detect the sensor of sulfuretted hydrogen in the atmosphere Download PDFInfo
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- CN1040866A CN1040866A CN 88106251 CN88106251A CN1040866A CN 1040866 A CN1040866 A CN 1040866A CN 88106251 CN88106251 CN 88106251 CN 88106251 A CN88106251 A CN 88106251A CN 1040866 A CN1040866 A CN 1040866A
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- sensor
- atmosphere
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- electrode
- sulfuretted hydrogen
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Abstract
The present invention is the electrochemical sensor that detects sulfuretted hydrogen in the atmosphere.It is made up of a pair of silver/sulfide electrode and solid-state organogel electrolyte.The present invention is simple in structure, easy to assembly, the measurement range broad; In addition, the soft and high resilience of solid electrolyte of the present invention, highly sensitive, place and long service life.
Description
The present invention is the electrochemical sensor that detects sulfuretted hydrogen in the atmosphere.
Deutsches Reichs-Patent 2,657,570 have introduced a kind of electrochemical sensor that detects sulfuretted hydrogen, and by the polarogram type electrochemical cell that three electrodes are formed, its working electrode and contrast electrode adopt difform silver/sulfide electrode, the auxiliary electrode copper sheet; Its electrolyte is to contain the different gel thin slices of forming with two, and Main Ingredients and Appearance is Polyvinylchloride, propylene carbonate and diethyl phthalate.The major defect of this sensor is a complex structure, need add current potential, easily makes electrode passivation; In addition, gel electrolyte is block, harder, influences the sensitivity and the life-span of sensor.
The objective of the invention is to simplify the structure of sensor, prepare a kind of hydrogen sulfide sensor of highly sensitive, long service life.
Sensor of the present invention is to constitute the galvanic cell type gas sensor by organogel electrolyte and a pair of netted silver/sulfide electrode, gas enters by natural diffusion way, when air inlet place exists as hydrogen sulfide gas, just produce electrochemical reaction sensitively, and electric current output is arranged immediately, thereby detect the sulfuretted hydrogen in the atmosphere delicately.Its electrode reaction is:
The organogel electrolyte is made of the superpolymer of the tridimensional network of (all being weight percentage) 12-32% polyacrylamide, 44-70% ethylene glycol, 15-35% formamide and about 0.5% sodium acetate, have certain shape and physical strength, soft and high resilience.Because gel contains a large amount of polar solvents, can make electrolyte ionization be ionic state, has good electric conductivity, and form an elastic interface that well contacts with electrode, help the reaction between gas, liquid, solid (being sulfuretted hydrogen, electrolyte and the electrode) three-phase, make response performance good, highly sensitive.In addition, the solvent in the organogel is not volatile, and this gel is placed and use all stable down at-10-60 ℃, does not occur drying up, separating and freezes phenomenon, has prolonged storage period and serviceable life.
Another characteristics of the present invention are (seeing Fig. 1 for details) simple in structure, easy to assembly of sensor, and the pond body of this sensor is the Cylinder with polycarbonate resin processing.Placing a silver/silver sulfide mesh electrode at the bottom of the pond, is the organogel electrolyte on the electrode.Place another silver/silver sulfide mesh electrode on electrolytical top, on electrode top one polytetrafluoroethylporous porous membrane is arranged, detected gas enters in the sensor by this film.
In certain reaction system, under the constant situation of the physical dimension of sensor and environmental conditions, detect electric current and gas concentration and have following relationship:
I∝KC
Promptly survey electric current and gas concentration is linear.
Sensor of the present invention, when concentration of hydrogen sulfide at 0-150mg/m
3In the time of in the scope, the relation curve of electric current and concentration is a straight line, and experimental result sees Fig. 2 for details.
Fig. 1: the structure of hydrogen sulfide sensor
1-sensor pond body
2-silver/sulfide electrode
3-organogel electrolyte
4-silver/sulfide electrode
The 5-polytetrafluoroethylporous porous film
6-draws lead
7-draws lead
Fig. 2: the relation curve of hydrogen sulfide sensor strength of current and concentration
I-strength of current (μ A)
C-concentration of hydrogen sulfide (mg/m
3)
Claims (4)
1, detects the electrochemical sensor of sulfuretted hydrogen in the atmosphere, it is characterized in that adopting organogel electrolyte and two netted silver/sulfide electrode to constitute the galvanic cell type gas sensor.
2, sensor according to claim 1, its organogel electrolyte is by the 12-32% polyacrylamide, 44-70% ethylene glycol, 15-35% formamide and about 0.5% sodium acetate are formed (all being weight percentage).
3, by claim 1 or 2 described sensors, it is characterized in that the soft and high resilience of organogel electrolyte, be more than half a year serviceable life.
4, by the described sensor of claim 1, its measurement range is 0-150mg/m
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106251 CN1040866A (en) | 1988-09-01 | 1988-09-01 | Detect the sensor of sulfuretted hydrogen in the atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88106251 CN1040866A (en) | 1988-09-01 | 1988-09-01 | Detect the sensor of sulfuretted hydrogen in the atmosphere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1040866A true CN1040866A (en) | 1990-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88106251 Pending CN1040866A (en) | 1988-09-01 | 1988-09-01 | Detect the sensor of sulfuretted hydrogen in the atmosphere |
Country Status (1)
| Country | Link |
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| CN (1) | CN1040866A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437104C (en) * | 2005-05-18 | 2008-11-26 | 深圳市奥特迅传感技术有限公司 | Gas sensor, gas detector, and self-testing and self-correcting method therefor |
| CN101435790B (en) * | 2008-12-22 | 2012-06-27 | 中国科学院长春应用化学研究所 | Method for preparing multiple-electrode electrochemical gas sensor |
| CN107817282A (en) * | 2017-10-24 | 2018-03-20 | 南方科技大学 | Gel electrolyte, preparation method thereof, gas sensor and application |
| CN108802107A (en) * | 2017-05-02 | 2018-11-13 | 中国石油化工股份有限公司 | A method of based on resistance measurement concentration of hydrogen sulfide |
| CN109536131A (en) * | 2018-10-24 | 2019-03-29 | 南京艾伊科技有限公司 | A kind of aqueous alkaline electrolyte and preparation method thereof |
| CN112924512A (en) * | 2021-01-15 | 2021-06-08 | 合肥工业大学 | Alcohol hydrogel sensing device based on layered carbon nanosheets and method thereof |
| CN115368696A (en) * | 2022-08-18 | 2022-11-22 | 中山大学 | Transparent stretchable self-powered hydrogen sulfide gas sensor based on gel |
-
1988
- 1988-09-01 CN CN 88106251 patent/CN1040866A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437104C (en) * | 2005-05-18 | 2008-11-26 | 深圳市奥特迅传感技术有限公司 | Gas sensor, gas detector, and self-testing and self-correcting method therefor |
| CN101435790B (en) * | 2008-12-22 | 2012-06-27 | 中国科学院长春应用化学研究所 | Method for preparing multiple-electrode electrochemical gas sensor |
| CN108802107A (en) * | 2017-05-02 | 2018-11-13 | 中国石油化工股份有限公司 | A method of based on resistance measurement concentration of hydrogen sulfide |
| CN108802107B (en) * | 2017-05-02 | 2021-02-09 | 中国石油化工股份有限公司 | Method for measuring concentration of hydrogen sulfide based on resistance |
| CN107817282A (en) * | 2017-10-24 | 2018-03-20 | 南方科技大学 | Gel electrolyte, preparation method thereof, gas sensor and application |
| CN109536131A (en) * | 2018-10-24 | 2019-03-29 | 南京艾伊科技有限公司 | A kind of aqueous alkaline electrolyte and preparation method thereof |
| CN109536131B (en) * | 2018-10-24 | 2021-07-16 | 南京艾伊科技有限公司 | Aqueous alkaline electrolyte and preparation method thereof |
| CN112924512A (en) * | 2021-01-15 | 2021-06-08 | 合肥工业大学 | Alcohol hydrogel sensing device based on layered carbon nanosheets and method thereof |
| CN112924512B (en) * | 2021-01-15 | 2023-01-24 | 合肥工业大学 | Alcohol hydrogel sensing device based on layered carbon nanosheets and method thereof |
| CN115368696A (en) * | 2022-08-18 | 2022-11-22 | 中山大学 | Transparent stretchable self-powered hydrogen sulfide gas sensor based on gel |
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