DE834597C - Process for the treatment of metal salt electrodes produced by casting and used for measuring ion concentrations - Google Patents

Process for the treatment of metal salt electrodes produced by casting and used for measuring ion concentrations

Info

Publication number
DE834597C
DE834597C DEP12118A DEP0012118A DE834597C DE 834597 C DE834597 C DE 834597C DE P12118 A DEP12118 A DE P12118A DE P0012118 A DEP0012118 A DE P0012118A DE 834597 C DE834597 C DE 834597C
Authority
DE
Germany
Prior art keywords
metal salt
treatment
ion concentrations
casting
measuring ion
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
Application number
DEP12118A
Other languages
German (de)
Inventor
Dr Phil Alfred Naumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DEP12118A priority Critical patent/DE834597C/en
Application granted granted Critical
Publication of DE834597C publication Critical patent/DE834597C/en
Expired legal-status Critical Current

Links

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)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Description

Verfahren zur Behandlung von im Gießverfahren hergestellten, zur Messung von Ionenkonzentrationen dienenden Metallsalz-Elektroden Zur Messung von Ionenkonzentrationen, z.B. Process for the treatment of produced in the casting process, for Measurement of ion concentrations using metal salt electrodes For measuring Ion concentrations, e.g.

Wasserstoffionenkonzentrationen werden neben der Metallelektrode sogenannte Bezugselektroden benutzt, die beispielsweise aus Quecksilber mit Kalomel in einer Kaliumchloridlösung oder aus Silber-Silberchlorid und einer Kaliumchloridlösung bestehen. Bei der Verwendung von Metallsalzelek.troden, z. B.Hydrogen ion concentrations are next to the metal electrode so-called Reference electrodes used, for example from mercury with calomel in one Potassium chloride solution or from silver-silver chloride and a potassium chloride solution exist. When using metal salt electrodes, e.g. B.

Silberchlorid, als Werkstoff für solche Bezugselektroden ist die Stromergiebigkeit infolge des hohen Widerstandes der Elektroden im allgemeinen gering.Silver chloride, as a material for such reference electrodes, is the current yield generally low due to the high resistance of the electrodes.

Infolgedessen können diese Potentiale meistens nur mit Kompensationsverfahren gemessen werden. Will man zu technisch einfachen Geräten gelangen, so muß man stromverbrauchende Schaltungen anstreben.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.

Diese erfordern kleine Widerstände für die Elektroden. So rechnet man z. B. bei den bekannten Silberchloridelektroden mit Meßwiderständen von etwa 20 ooo Ohm, wodurch die Stromentnahme zum Betrieb technischer Anzeigeinstrumente nicht mehr ausreicht.These require small resistances for the electrodes. So do the math one z. B. in the known silver chloride electrodes with measuring resistors of about 20,000 ohms, which means that the power is drawn to operate technical display instruments is no longer sufficient.

Der Erfindung liegt die Aufgabe zugrunde, die Widerstände der hier in Betracht kommenden Elektroden zu verringern, was dadurch erreicht wird, daß das nahe bis an den Schmelzpunkt erwärmte Metall- salz oder die Metallsalzschmelze, z. B. in Eiswasser, stark abgeschreckt wird. Beispielsweise haben Elektroden aus so behandelten Silberhalogeniden etwa einen Materialwiderstand von 50 Ohm und unter Einbeziehung des Grenzflächenwiderstandes etwa 500 bis Iooo Ohm Meßwiderstand. Es lassen sich somit aus den Ketten genügend große Ströme entnehmen, die zum direkten Betrieb von technischen Instrumenten ausreichen. The invention is based on the object, the resistors here to reduce eligible electrodes, which is achieved in that the metal parts heated close to the melting point salt or the molten metal salt, z. B. in ice water, is strongly quenched. For example, electrodes have off silver halides treated in this way had a material resistance of about 50 ohms and below Inclusion of the interface resistance approx. 500 to 100 ohms measuring resistor. It can thus be taken from the chains sufficiently large currents that lead to the direct Operation of technical instruments is sufficient.

Claims (1)

P ATENTANSPRE'CII: Verfahren zur Behandlung von im Gießverfahren hergestellten zur Messung von Ionenkonzentrationen dienenden Aletallsalzelektroden, dadurch gekennzeichnet, daß zur Erhöhung der Leitfähigkeit des Metallsalzes, z. B. Silberchlorids, das nahe bis an den Schmelzpunkt erwärmte Metallsalz oder die Metallsalzschmelze stark abgeschreckt wird. P ATENTANSPRE'CII: Process for the treatment of in the casting process manufactured aluminum salt electrodes used to measure ion concentrations, characterized in that to increase the conductivity of the metal salt, for. B. silver chloride, the metal salt heated close to the melting point or the Molten metal salt is strongly quenched.
DEP12118A 1948-10-02 1948-10-02 Process for the treatment of metal salt electrodes produced by casting and used for measuring ion concentrations Expired DE834597C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP12118A DE834597C (en) 1948-10-02 1948-10-02 Process for the treatment of metal salt electrodes produced by casting and used for measuring ion concentrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP12118A DE834597C (en) 1948-10-02 1948-10-02 Process for the treatment of metal salt electrodes produced by casting and used for measuring ion concentrations

Publications (1)

Publication Number Publication Date
DE834597C true DE834597C (en) 1952-03-20

Family

ID=7363873

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP12118A Expired DE834597C (en) 1948-10-02 1948-10-02 Process for the treatment of metal salt electrodes produced by casting and used for measuring ion concentrations

Country Status (1)

Country Link
DE (1) DE834597C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1498650B1 (en) * 1963-02-20 1971-08-12 Corning Glass Works Method of making a glass electrode for measuring ion concentration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1498650B1 (en) * 1963-02-20 1971-08-12 Corning Glass Works Method of making a glass electrode for measuring ion concentration

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