GB1000625A - Gas analysis - Google Patents
Gas analysisInfo
- Publication number
- GB1000625A GB1000625A GB519564A GB519564A GB1000625A GB 1000625 A GB1000625 A GB 1000625A GB 519564 A GB519564 A GB 519564A GB 519564 A GB519564 A GB 519564A GB 1000625 A GB1000625 A GB 1000625A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iodine
- electrolyte
- platinum
- cathode
- gas
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
-
- 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
- G01N27/423—Coulometry
-
- 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
- G01N27/49—Systems involving the determination of the current at a single specific value, or small range of values, of applied voltage for producing selective measurement of one or more particular ionic species
Abstract
1,000,625. Gas analysis. BECKMAN INSTRUMENTS Inc., Feb. 7, 1964 [Feb. 13,1963], No. 5195/64. Headings G1B and G1N. In an apparatus for the determination of the amount of carbon monoxide in a gas sample stream. Iodine vapour is produced in a converter 21 by the reaction of the carbon monoxide with iodine pentoxide and is delivered to a first electrode (cathode) 38 in an electrochemical cell having a halide solution as the electrolyte, and a second electrode (anode) 44 remote from the path of the iodine vapour, the electrodes effecting the reduction of the iodine vapour and the generation of a current that is indicative of the rate of entry of iodine vapour and thus proportional to the rate of supply of carbon monoxide in the sample gas stream. The converter comprises a cylindrical heater 34 around a central tube 32 containing granulated iodine pentoxide or a mixture of powdered iodine pentoxide with small glass spheres supported on a wad 35 of glass wool. The electrolyte is circulated around the conduit loop 11, 16,10 by bubble lift during which the iodine is dissolved in the electrolyte, the gas passing to atmosphere via a flowmeter 28 and aspirator 30. The electrolyte descends over the platinum cathode and the dissolved iodine is reduced. The electrochemical reactions are given. A conduit extension 12 from the bottom of the conduit loop is passed through a hole in a stopper 15 and communicates with an anode chamber 14 wherein a platinum wire 42 woven through a graphite cloth 44 is immersed in a sludge 46 of active carbon particles to form the anode. A small platinum screen 45 is provided in the vicinity of the point of emergence of the wire from the carbon in order to facilitate the escape of hydrogen during recharging. In a modification, Fig. 2, the cell comprises two separate compartments 52, 76 connected by a plastic sleeve 78 and the sample gas is injected into an inner or cathode compartment 54 of porous glass, porous ceramic or other porous material lined with a platinum cathode screen 56, the compartment 54 dipping into the electrolyte 94 which may be the same as in Fig. 1.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25823963A | 1963-02-13 | 1963-02-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1000625A true GB1000625A (en) | 1965-08-11 |
Family
ID=22979689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB519564A Expired GB1000625A (en) | 1963-02-13 | 1964-02-07 | Gas analysis |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1498598B2 (en) |
DK (1) | DK109759C (en) |
GB (1) | GB1000625A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4003705A (en) * | 1975-06-12 | 1977-01-18 | Beckman Instruments, Inc. | Analysis apparatus and method of measuring rate of change of electrolyte pH |
-
1964
- 1964-02-07 GB GB519564A patent/GB1000625A/en not_active Expired
- 1964-02-12 DE DE19641498598 patent/DE1498598B2/en active Granted
- 1964-02-13 DK DK69864A patent/DK109759C/en active
Also Published As
Publication number | Publication date |
---|---|
DE1498598A1 (en) | 1973-05-24 |
DK109759C (en) | 1968-06-24 |
DE1498598B2 (en) | 1974-06-06 |
DE1498598C3 (en) | 1975-01-23 |
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