GB1214645A - Determination of oxygen - Google Patents

Determination of oxygen

Info

Publication number
GB1214645A
GB1214645A GB4385467A GB4385467A GB1214645A GB 1214645 A GB1214645 A GB 1214645A GB 4385467 A GB4385467 A GB 4385467A GB 4385467 A GB4385467 A GB 4385467A GB 1214645 A GB1214645 A GB 1214645A
Authority
GB
United Kingdom
Prior art keywords
tube
oxygen
stream
sample
pyrolysis products
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
GB4385467A
Inventor
Walter Walisch
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB4385467A priority Critical patent/GB1214645A/en
Priority to FR1585715D priority patent/FR1585715A/fr
Publication of GB1214645A publication Critical patent/GB1214645A/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
    • 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
    • G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

1,214,645. Determination of oxygen. W. WALISCH. 16 Sept., 1968 [26 Sept., 1967], No. 43854/67. Heading B1X. The oxygen content of an organic sample is determined by pyrolysing the sample and entraining the gaseous pyrolysis products in a stream of suitable carrier gas, passing the gas stream over a finelly divided mixture of nickel and carbon heated to such a temperature that the oxygen in the gaseous pyrolysis products is quantitatively converted to carbon monoxide, absorbing gases other than CO, inert gases, N 2 , H 2 and CH 4 from the gaseous stream, oxidising the CO to CO 2 without substantially affecting any CH 4 present and determining the amount of CO 2 present in the resulting gas stream. Carrier gas, e.g. helium +1 %H 2 is supplied at constant pressure from cylinder 10 by means of valves 11 and 12 and by means of the arrangement of valve 19, tube 20 and waterfilled vessel 21 the pressure of gas in the apparatus is kept constant. The sample in platinum boat 22 is inserted into the hot zone 17 of the pyrolytic tube 16 by means of a quartz rod 23 having a magnetic portion 25 associated with a further magnetic portion 26 outside tube 16. The gaseous pyrolysis products are carried by the carrier gas over the nickeled carbon charge 17 wherein oxygen is converted to CO, the resulting mixture being passed via line 27 to an absorption tube 28 containing layers of soda asbestos 28a, sodium thiosulphate 28b, soda asbestos 28c and magnesium perchlorate 28d. The 'remaining mixture of inert gases, CO, N 2 , H 2 and CH 4 passes on to oxidation tube 30 at 250‹C where the CO is oxidised to CO 2 , H 2 to H 2 O while CH 4 is unchanged and the water is retained in absorption tube 31 containing magnesium perchlorate. The CO 2 , N 2 and CH 4 in helium pass into the measuring cell 32 of a symmertical catharometer 33 wherein the CO 2 is absorbed in tube 35.
GB4385467A 1967-09-26 1967-09-26 Determination of oxygen Expired GB1214645A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4385467A GB1214645A (en) 1967-09-26 1967-09-26 Determination of oxygen
FR1585715D FR1585715A (en) 1967-09-26 1968-09-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4385467A GB1214645A (en) 1967-09-26 1967-09-26 Determination of oxygen

Publications (1)

Publication Number Publication Date
GB1214645A true GB1214645A (en) 1970-12-02

Family

ID=10430606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4385467A Expired GB1214645A (en) 1967-09-26 1967-09-26 Determination of oxygen

Country Status (2)

Country Link
FR (1) FR1585715A (en)
GB (1) GB1214645A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109696515A (en) * 2019-02-04 2019-04-30 中南大学 Vertical double-chamber coke activation energy analyzer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734363B1 (en) * 1995-05-16 1997-08-01 Pernod Ricard METHOD FOR MEASURING THE 18O AND / OR 15N CONTENT OF A CHEMICAL SUBSTANCE, APPARATUS AND PYROLYSIS DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109696515A (en) * 2019-02-04 2019-04-30 中南大学 Vertical double-chamber coke activation energy analyzer

Also Published As

Publication number Publication date
FR1585715A (en) 1970-01-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees