DE825905C - Process for the treatment of silver halide electrodes used to measure ion concentrations - Google Patents
Process for the treatment of silver halide electrodes used to measure ion concentrationsInfo
- Publication number
- DE825905C DE825905C DEP8971D DEP0008971D DE825905C DE 825905 C DE825905 C DE 825905C DE P8971 D DEP8971 D DE P8971D DE P0008971 D DEP0008971 D DE P0008971D DE 825905 C DE825905 C DE 825905C
- Authority
- DE
- Germany
- Prior art keywords
- ion concentrations
- silver halide
- treatment
- electrodes used
- electrodes
- 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
Links
- 229910052709 silver Inorganic materials 0.000 title claims description 8
- 239000004332 silver Substances 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 6
- -1 silver halide Chemical class 0.000 title claims description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000007772 electrode material Substances 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 229910021607 Silver chloride Inorganic materials 0.000 description 4
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 229940075397 calomel Drugs 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/301—Reference electrodes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Electrolytic Production Of Metals (AREA)
Description
Verfahren zur Behandlung von zur Messung von Ionenkonzentrationen dienenden Silberhalogenid-Elektroden Zur Messung von Ionenkonzentrationen, z. B.Method for the treatment of for the measurement of ion concentrations Serving silver halide electrodes For measuring ion concentrations, e.g. B.
Wasserstoffionenkonzentrationen, werden neben der Metal lelektrode sogenannte Bezugselektroden benutzt, die beispielsweise aus Quecksilber mit Kalomel in einer Kaliumchloridlösung oder aus Silber, Silberchlorid und einer Kaliumchloridlösung bestehen. Bei der Verwendung von Silherhalogeniden, z. B. Silberchlorid, als Werkstoff für solche Bezugselektroden ist die Stromergiebigkeit der Elektroden im allgemeinen gering. Infolgedessen können diese I>otentiale meistens nur mit Kompensationsverfahren gemessen werden. Will man zu technisch einfachen Geräten gelangen, so muß man stromverbrauchende Schaltungen anstreben. Derartige Schaltungen erfordern neben einem kleinen Widerstand für die Elektrode vor allem eine kleine Polarisier- barkeit derselben bei Entnahme der verhältnismäßig großen Ströme.Hydrogen ion concentrations are next to the metal electrode so-called reference electrodes are used, for example made of mercury with calomel in a potassium chloride solution or from silver, silver chloride and a potassium chloride solution exist. When using silver halides, e.g. B. silver chloride as a material for such reference electrodes the current yield of the electrodes is in general small amount. As a result, these potentials can usually only be achieved with compensation methods be measured. If you want to get to technically simple devices, you have to use electricity-consuming devices Strive for circuits. Such circuits require not only a small resistance especially a small polarization for the electrode availability of the same upon removal of the comparatively large currents.
Die Erfindung strebt an, die Polarisierharkeit derartiger S ilberhalogenidelektroden herabzusetzen und schlägt dafür zwei Wege ein. Einmal wird so vorgegangen, daß das Ele.ktrodenmaterial einer Ultraviolettbestrahlung ausgesetzt wird. Hierbei färbt sich z. B. das Silberchlorid tief dunkelblau. The invention aims to improve the polarizability of such silver halide electrodes and takes two paths for this. At one point it is proceeded in such a way that the Electrode material is exposed to ultraviolet radiation. This colors z. B. the silver chloride deep dark blue.
Diese Blaufärbung rührt von atomarem Silber her, das sich bei der Belichtung durch photochemische Zersetzung bildet. Sank vor Anwendung dieses neun Verfahrens das Potential einer Elektrode, die mit I5 mA belastet war, um etwa IO°/o innerhalb einer bestimmten Zeit, so sinkt es nach Anwendung der Bestrahlung nur noch um I °/o und zeigt darüber hinaus keinen stetigen Abfall mehr wie vorher.This blue coloration is due to the atomic silver that is present in the Exposure forms through photochemical decomposition. Declined before applying this nine Method, the potential of an electrode that was loaded with 15 mA by about 10 ° / o within a certain time, it only decreases after the application of the radiation still around 10 / o and, moreover, no longer shows a steady decline as before.
Der zweite Weg besteht darin, daß in dem Schmelzfluß von vornherein ein Metallüberschuß durch Zugabe von kolloidalem Silber erzeugt wird. The second way is that in the melt flow in advance an excess of metal is produced by adding colloidal silver.
PATENTANSPROCHE: 1. Verfahren zur Behandlung von zur Messung von Ionenkonzentrationen dienenden Silber halogenidelektroden, z. B. Silberchloridelektroden, dadurch gekennzeichnet, daß zwecks Her absetzung der Polarisierbarkeit der Elektroden deren Material einer Ultraviolettbestrahlung ausgesetzt wird. PATENT CLAIMS: 1. Method of treating for measuring Ion concentrations serving silver halide electrodes, z. B. silver chloride electrodes, characterized in that for the purpose of reducing the polarizability of the electrodes whose material is exposed to ultraviolet radiation.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP8971D DE825905C (en) | 1948-10-02 | 1948-10-02 | Process for the treatment of silver halide electrodes used to measure ion concentrations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP8971D DE825905C (en) | 1948-10-02 | 1948-10-02 | Process for the treatment of silver halide electrodes used to measure ion concentrations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE825905C true DE825905C (en) | 1951-12-27 |
Family
ID=7361999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEP8971D Expired DE825905C (en) | 1948-10-02 | 1948-10-02 | Process for the treatment of silver halide electrodes used to measure ion concentrations |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE825905C (en) |
-
1948
- 1948-10-02 DE DEP8971D patent/DE825905C/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2820474A1 (en) | ELECTROCHEMICAL PROBE | |
| DE1044365B (en) | Process for making scales, patterns and the like like. in glass | |
| DE1069403B (en) | ||
| DE2210531A1 (en) | Device for measuring the activity of cadmium ions | |
| DE825905C (en) | Process for the treatment of silver halide electrodes used to measure ion concentrations | |
| DE917347C (en) | Method for covering heat-resistant objects with a thin electrically conductive covering | |
| DE4135524C2 (en) | Method and means for chromating surfaces made of zinc or cadmium or alloys thereof | |
| DE60112425T2 (en) | Voltammetric analysis using an amalgam electrode | |
| DE3531355A1 (en) | TECHNETIUM 99M GENERATOR, ITS PRODUCTION AND USE | |
| DE2600846A1 (en) | ION-SELECTIVE ELECTRODE | |
| DE1773318A1 (en) | Method and device for the analysis of materials | |
| DE912651C (en) | Means and processes for the formation of coatings on stainless steels | |
| DE2621731A1 (en) | METHOD OF MANUFACTURING AN ION-SELECTIVE ELECTRODE | |
| DE955771C (en) | Process for the production of prints on metallized paper | |
| DE2720867C2 (en) | Method for the quantitative separation of uranium from samples of natural water | |
| DE645482C (en) | Process for measuring, registering or regulating the content of bleaching agents in bleaching baths | |
| DE847362C (en) | Voltage generating electrode for measuring the concentration of ions, especially hydrogen ions | |
| AT205183B (en) | Process for the production of scales, samples or the like in glass | |
| DE882315C (en) | Method for the determination of chemically oxidizable or reducible substances, especially oxygen in water, by measuring depolarization | |
| CH292233A (en) | Geiger-Müller counter tube. | |
| DE523562C (en) | Process for the transfer of pigment copies for the purpose of producing printing forms | |
| DE189227C (en) | PROCESS FOR INCREASING THE STRENGTH OF TIN WEIGHTED SILK | |
| DE2262300C3 (en) | Method for determining the size of the surface of a workpiece | |
| DE928753C (en) | Process for the rapid development of photographic silver halide layers | |
| DE227150C (en) |