GB1453471A - Coulometry and coulometric analysis - Google Patents

Coulometry and coulometric analysis

Info

Publication number
GB1453471A
GB1453471A GB412873A GB412873A GB1453471A GB 1453471 A GB1453471 A GB 1453471A GB 412873 A GB412873 A GB 412873A GB 412873 A GB412873 A GB 412873A GB 1453471 A GB1453471 A GB 1453471A
Authority
GB
United Kingdom
Prior art keywords
electrode
species
generator
auxiliary
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
Application number
GB412873A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB412873A priority Critical patent/GB1453471A/en
Publication of GB1453471A publication Critical patent/GB1453471A/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
    • G01N27/416—Systems
    • G01N27/42—Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte
    • G01N27/44—Measuring deposition or liberation of materials from an electrolyte; Coulometry, i.e. measuring coulomb-equivalent of material in an electrolyte using electrolysis to generate a reagent, e.g. for titration

Abstract

1453471 Electro-chemical analysis IMPERIAL CHEMICAL INDUSTRIES Ltd 28 Jan 1974 [26 Jan 1973] 4128/73 Heading G1N In apparatus for determining the concentration of a species in a continuously fed electrolyte, the species is removed by a process at an electrode system supplied with a constant current and the amount of electricity needed to remove the species is determined. Removal may comprise electrochemical deposition; generation of a reagent which reacts with the species, or conversion of the species to another valency state. Preferably current is passed only when the species is present, the species being detected by electro-chemical sensing electrodes (sensor and reference) or by conductivity electrodes. The generator system comprises a generator electrode and an auxiliary electrode. One reversible electrode may be both generator and sensor electrode and another reversible electrode may be both auxiliary and reference electrodes. Preferably the auxiliary electrode is located downstream of the generator electrode to remove the risk of interference from species formed at the auxiliary electrode. To reduce electrical interference, one electrode preferably constitutes a portion of the conduit wall, is earthed and surrounds the other electrode. As shown, sections 1 and 6 of the conduit wall are made of PTFE and are separated by a platinum auxilary electrode 3. The detector electrodes are reference electrode 2 and platinum redox sensor (4) and platinum generator electrode 5 is axially aligned inside the auxiliary electrode. The cell may be used for the analysis of submicrogram quantities of sulphur dioxide by passing the gas into a solution of potassium iodide, iodine and acetic acid so that iodine is converted to iodide and generating iodine at electrode 5 to restore the balance.
GB412873A 1973-01-26 1973-01-26 Coulometry and coulometric analysis Expired GB1453471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB412873A GB1453471A (en) 1973-01-26 1973-01-26 Coulometry and coulometric analysis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB412873A GB1453471A (en) 1973-01-26 1973-01-26 Coulometry and coulometric analysis

Publications (1)

Publication Number Publication Date
GB1453471A true GB1453471A (en) 1976-10-20

Family

ID=9771286

Family Applications (1)

Application Number Title Priority Date Filing Date
GB412873A Expired GB1453471A (en) 1973-01-26 1973-01-26 Coulometry and coulometric analysis

Country Status (1)

Country Link
GB (1) GB1453471A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114102A2 (en) * 1983-01-17 1984-07-25 Dale M. Coulson Apparatus for electrochemical detection and coulometric titration

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114102A2 (en) * 1983-01-17 1984-07-25 Dale M. Coulson Apparatus for electrochemical detection and coulometric titration
EP0114102A3 (en) * 1983-01-17 1985-11-27 Dale M. Coulson Apparatus for electrochemical detection and coulometric titration

Similar Documents

Publication Publication Date Title
Coulson et al. Automatic chloride analyzer
US2621671A (en) Electrolytic titrimeter
Swain et al. Tetrahexylammonium benzoate, a liquid salt at 25. degree., a solvent for kinetics or electrochemistry
EP0470649A3 (en) Method and apparatus for electrochemical measurements
US4227974A (en) Electrochemical cell having a polarographic device with ion selective electrode as working electrode and method of use
EP0114102B1 (en) Apparatus for electrochemical detection and coulometric titration
Stromatt Studies on the Electroreduction of Uranyl (VI) in Molten Equimolar KCl‐NaCl by Chronopotentiometric and Electrode Impedance Measurements
Zielen et al. The neptunium (VII)-(VI) couple in sodium hydroxide solutions
GB1453471A (en) Coulometry and coulometric analysis
Terry et al. Determination of Technetium by Controlled-Potential Coulometric Titration in Buffered Sodium Tripolyphosphate Medium.
GB1117418A (en) Method of an apparatus for continuous regeneration of an electrode
Mazzocchin et al. Quantitative determinations of technetate (VII) and technetium (IV)
Guilbault et al. Glass-metal composite electrodes
Johansson Coulometric titration of weak acids in non-aqueous solvents
Roberts Jr et al. Voltammetric determination of carbon monoxide at gold electrodes
Koyama Square-wave polarography of plutonium
GB1098653A (en) Gas analysis
Pastor et al. Electrogenerated iodine as a reagent for coulometric titrations in alcoholic media
GB1208209A (en) Method and system for determining the oxygen content in liquids
Boström et al. Rapid coulometric method for the Kjeldahl determination of nitrogen
GB1184572A (en) Improvements in Oxygen Detectors.
Ciesielski et al. Potentiometric and coulometric titration of 2-thiobarbituric acid
GB2069147A (en) Coulometric titration method
Wojciechowski et al. Anodic oxidation of mercury in the presence of chloride and other halide ions in acetonitrile
Dakashev et al. Pulse coulometric titration in continuous flow

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee