GB2251070A - A detector for monitoring low molecular weight compounds - Google Patents

A detector for monitoring low molecular weight compounds

Info

Publication number
GB2251070A
GB2251070A GB9127168A GB9127168A GB2251070A GB 2251070 A GB2251070 A GB 2251070A GB 9127168 A GB9127168 A GB 9127168A GB 9127168 A GB9127168 A GB 9127168A GB 2251070 A GB2251070 A GB 2251070A
Authority
GB
United Kingdom
Prior art keywords
molecular weight
low molecular
weight compounds
detector
methanol
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.)
Granted
Application number
GB9127168A
Other versions
GB9127168D0 (en
GB2251070B (en
Inventor
Stephen Clifford Woods
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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
Priority claimed from GB898915495A external-priority patent/GB8915495D0/en
Priority claimed from GB898916570A external-priority patent/GB8916570D0/en
Priority claimed from GB909005217A external-priority patent/GB9005217D0/en
Priority claimed from PCT/GB1990/001029 external-priority patent/WO1991001001A1/en
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB9127168A priority Critical patent/GB2251070B/en
Publication of GB9127168D0 publication Critical patent/GB9127168D0/en
Publication of GB2251070A publication Critical patent/GB2251070A/en
Application granted granted Critical
Publication of GB2251070B publication Critical patent/GB2251070B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/405—Concentrating samples by adsorption or absorption
    • 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
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/223—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating presence of specific gases or aerosols
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/98—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving alcohol, e.g. ethanol in breath
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
    • G01N1/2214—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Hematology (AREA)
  • Urology & Nephrology (AREA)
  • Biomedical Technology (AREA)
  • Dispersion Chemistry (AREA)
  • Cell Biology (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Biophysics (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

A detector for monitoring low molecular weight compounds and especially the alcohols ethanol and methanol in environments where higher molecular weight contaminants may also be present. Samples of gas are passed through a porous adsorber which has relatively low retention for low molecular weight compounds such as methanol and ethanol and relatively high retention for higher molecular weight species. The portion of the sample not retained by the adsorber is then passed through a reagent which undergoes a colour change with low molecular weight compounds the extent of colour change being indicative of the amount of low molecular weight compound present. The invention is particularly useful for monitoring the concentration of low molecular weight organic alcohols such as methanol and ethanol. <IMAGE>
GB9127168A 1989-07-06 1991-12-20 A detector for monitoring low molecular weight compounds Expired - Fee Related GB2251070B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9127168A GB2251070B (en) 1989-07-06 1991-12-20 A detector for monitoring low molecular weight compounds

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB898915495A GB8915495D0 (en) 1989-07-06 1989-07-06 Methanol monitor
GB898916570A GB8916570D0 (en) 1989-07-20 1989-07-20 Methanol monitor
GB909005217A GB9005217D0 (en) 1990-03-08 1990-03-08 Compound detector
PCT/GB1990/001029 WO1991001001A1 (en) 1989-07-06 1990-07-04 A detector for monitoring low molecular weight compounds
GB9127168A GB2251070B (en) 1989-07-06 1991-12-20 A detector for monitoring low molecular weight compounds

Publications (3)

Publication Number Publication Date
GB9127168D0 GB9127168D0 (en) 1992-02-19
GB2251070A true GB2251070A (en) 1992-06-24
GB2251070B GB2251070B (en) 1993-01-20

Family

ID=27450367

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9127168A Expired - Fee Related GB2251070B (en) 1989-07-06 1991-12-20 A detector for monitoring low molecular weight compounds

Country Status (1)

Country Link
GB (1) GB2251070B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042683A1 (en) * 1980-06-24 1981-12-30 National Research Development Corporation Process for the production of adsorptive gas traps
WO1987001204A1 (en) * 1985-08-15 1987-02-26 Global Geochemistry Corporation Chemical analysis by controlled sample modulation and detection correlation
EP0213278A2 (en) * 1985-09-05 1987-03-11 Drägerwerk Aktiengesellschaft Diffusion gas sampler

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0042683A1 (en) * 1980-06-24 1981-12-30 National Research Development Corporation Process for the production of adsorptive gas traps
WO1987001204A1 (en) * 1985-08-15 1987-02-26 Global Geochemistry Corporation Chemical analysis by controlled sample modulation and detection correlation
EP0213278A2 (en) * 1985-09-05 1987-03-11 Drägerwerk Aktiengesellschaft Diffusion gas sampler

Also Published As

Publication number Publication date
GB9127168D0 (en) 1992-02-19
GB2251070B (en) 1993-01-20

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Legal Events

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

Effective date: 19980704