GB1017545A - Method and apparatus for the detection of a contaminant in air or other gases - Google Patents

Method and apparatus for the detection of a contaminant in air or other gases

Info

Publication number
GB1017545A
GB1017545A GB3643463A GB3643463A GB1017545A GB 1017545 A GB1017545 A GB 1017545A GB 3643463 A GB3643463 A GB 3643463A GB 3643463 A GB3643463 A GB 3643463A GB 1017545 A GB1017545 A GB 1017545A
Authority
GB
United Kingdom
Prior art keywords
gas
air
contaminant
particles
vessel
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
GB3643463A
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.)
CECIL OWEN HARVEY
Original Assignee
CECIL OWEN HARVEY
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 CECIL OWEN HARVEY filed Critical CECIL OWEN HARVEY
Priority to GB3643463A priority Critical patent/GB1017545A/en
Publication of GB1017545A publication Critical patent/GB1017545A/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator

Abstract

1,017,545. Gas analysis. C. O. HARVEY. Sept. 23, 1964 [Sept. 16, 1963], No. 36434/63. Heading G1B. In a method of detecting a contaminant in a gas, the gas is passed through a mass of solid particles at such a rate as to impart turbulence to the particles, the particles comprising a reagent which undergoes a colour change after reacting with the contaminant. A suitable apparatus comprises an electric motor 1 driving an air blower 2, a flow meter 3, an absorbing unit 4 and an intake filter 5 for the blower. The absorbing unit consists of two stainless steel gauze discs sealed into the ends of a conical vessel 7. A powdered solid 8 impregnated with the reagent is poured into the unit 4 through a side arm 9 which is then stoppered. Air or gas is blown up through the unit 4, the powdered solid rising centrally and falling back at the walls of the vessel 7. When a suitable volume of air or gas has been passed through the vessel 4, the powdered solid is removed and its colour assessed by comparison with a series of standards. The method is useful in detecting contaminants present in only low concentrations e.g. below 1 part per million. Suitable reagents are silica gel treated with zinc nitroprusside for SO 2 , silver fluoride for AsH 3 PH 3 or SbH 3 , and cuprous iodide absorbed on silical gel for mercury vapour.
GB3643463A 1963-09-16 1963-09-16 Method and apparatus for the detection of a contaminant in air or other gases Expired GB1017545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3643463A GB1017545A (en) 1963-09-16 1963-09-16 Method and apparatus for the detection of a contaminant in air or other gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3643463A GB1017545A (en) 1963-09-16 1963-09-16 Method and apparatus for the detection of a contaminant in air or other gases

Publications (1)

Publication Number Publication Date
GB1017545A true GB1017545A (en) 1966-01-19

Family

ID=10388116

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3643463A Expired GB1017545A (en) 1963-09-16 1963-09-16 Method and apparatus for the detection of a contaminant in air or other gases

Country Status (1)

Country Link
GB (1) GB1017545A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629704A (en) * 1983-03-18 1986-12-16 Boliden Aktiebolag Method for assaying sulphur trioxide
CN108344735A (en) * 2018-05-15 2018-07-31 中国农业科学院农业质量标准与检测技术研究所 A kind of direct injected mercury vapourmeter and its application method
CN110441301A (en) * 2019-09-04 2019-11-12 电子科技大学中山学院 Formaldehyde rapid detection method and device based on fuchsin sodium sulfite reagent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629704A (en) * 1983-03-18 1986-12-16 Boliden Aktiebolag Method for assaying sulphur trioxide
CN108344735A (en) * 2018-05-15 2018-07-31 中国农业科学院农业质量标准与检测技术研究所 A kind of direct injected mercury vapourmeter and its application method
CN110441301A (en) * 2019-09-04 2019-11-12 电子科技大学中山学院 Formaldehyde rapid detection method and device based on fuchsin sodium sulfite reagent
CN110441301B (en) * 2019-09-04 2024-04-19 华测检测认证集团股份有限公司 Rapid formaldehyde detection method and device based on fuchsin sodium sulfite reagent

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