FR2208532A5 - Potentiometric determination of acid bath strength - using selective elec-trodes for F and H ions calibrated against KCL control electrode for pickling baths - Google Patents

Potentiometric determination of acid bath strength - using selective elec-trodes for F and H ions calibrated against KCL control electrode for pickling baths

Info

Publication number
FR2208532A5
FR2208532A5 FR7341006A FR7341006A FR2208532A5 FR 2208532 A5 FR2208532 A5 FR 2208532A5 FR 7341006 A FR7341006 A FR 7341006A FR 7341006 A FR7341006 A FR 7341006A FR 2208532 A5 FR2208532 A5 FR 2208532A5
Authority
FR
France
Prior art keywords
electrode
trodes
ions
control electrode
pickling baths
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
FR7341006A
Other languages
French (fr)
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.)
Outokumpu Stainless AB
Original Assignee
Avesta Jernverks AB
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 Avesta Jernverks AB filed Critical Avesta Jernverks AB
Application granted granted Critical
Publication of FR2208532A5 publication Critical patent/FR2208532A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

Problems associated with the potentiometric determn. of acid strength in pickling baths contg. HF are overcome by using ion selective electrodes. A lanthanum fluoride electrode is used for F and a reference electrode has 4M KCl surrounding it. An H ion selective electrode is formed by placing an Ag electrode in a plastic sheath and putting a barrier of strongly acidic ion exchange resin between the sample soln. and the electrode. The space inside the sleeve is filled with 1M HNO3 and 0.1M HCl. This gives a controlled environment for H ion potential measurement. The HF and other acid concs. are then determined from the potentials obtd.
FR7341006A 1972-11-16 1973-11-16 Potentiometric determination of acid bath strength - using selective elec-trodes for F and H ions calibrated against KCL control electrode for pickling baths Expired FR2208532A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1488872 1972-11-16

Publications (1)

Publication Number Publication Date
FR2208532A5 true FR2208532A5 (en) 1974-06-21

Family

ID=20299834

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341006A Expired FR2208532A5 (en) 1972-11-16 1973-11-16 Potentiometric determination of acid bath strength - using selective elec-trodes for F and H ions calibrated against KCL control electrode for pickling baths

Country Status (6)

Country Link
JP (1) JPS4983492A (en)
AU (1) AU6250373A (en)
BR (1) BR7309005D0 (en)
DE (1) DE2356965A1 (en)
FR (1) FR2208532A5 (en)
NL (1) NL7315762A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161658A2 (en) * 1984-05-14 1985-11-21 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Method for assessing, controlling and/or regulating fluoride-containing baths
EP0162489A1 (en) * 1984-04-13 1985-11-27 Metallgesellschaft Ag Process for controlling fluoride-containing baths for metal surface treatment
GB2273780A (en) * 1992-12-22 1994-06-29 British Nuclear Fuels Plc Electrochemical determination of fluoride in acid solution of pH <2.0.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5827865B2 (en) * 1978-10-06 1983-06-11 住友金属工業株式会社 Hydrogen ion and hydrofluoric acid concentration measuring device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162489A1 (en) * 1984-04-13 1985-11-27 Metallgesellschaft Ag Process for controlling fluoride-containing baths for metal surface treatment
EP0161658A2 (en) * 1984-05-14 1985-11-21 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Method for assessing, controlling and/or regulating fluoride-containing baths
EP0161658A3 (en) * 1984-05-14 1987-06-16 Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. Method for assessing, controlling and/or regulating fluoride-containing baths
GB2273780A (en) * 1992-12-22 1994-06-29 British Nuclear Fuels Plc Electrochemical determination of fluoride in acid solution of pH <2.0.
GB2273780B (en) * 1992-12-22 1996-07-17 British Nuclear Fuels Plc The determination of fluoride concentration in solutions

Also Published As

Publication number Publication date
NL7315762A (en) 1974-05-20
JPS4983492A (en) 1974-08-10
AU6250373A (en) 1975-05-15
DE2356965A1 (en) 1974-05-22
BR7309005D0 (en) 1974-08-29

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