Processing

Please wait...

Settings

Settings

1. WO1991001001 - A DETECTOR FOR MONITORING LOW MOLECULAR WEIGHT COMPOUNDS

Publication Number WO/1991/001001
Publication Date 24.01.1991
International Application No. PCT/GB1990/001029
International Filing Date 04.07.1990
Chapter 2 Demand Filed 06.02.1991
IPC
G01N 1/22 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
G01N 1/34 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
28Preparing specimens for investigation
34Purifying; Cleaning
G01N 31/22 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
31Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods
22using chemical indicators
G01N 33/98 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
48Biological material, e.g. blood, urine; Haemocytometers
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
98involving alcohol, e.g. ethanol in breath
CPC
G01N 1/2214
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
02Devices for withdrawing samples
22in the gaseous state
2202involving separation of sample components during sampling
2214by sorption
G01N 1/405
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
28Preparing specimens for investigation ; including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
40Concentrating samples
405by adsorption or absorption
G01N 31/223
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
31Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup
22using chemical indicators
223for investigating presence of specific gases or aerosols
G01N 33/98
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
48Biological material, e.g. blood, urine
50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
98involving alcohol, e.g. ethanol in breath
Applicants
  • THE SECRETARY OF STATE FOR DEFENCE IN HER BRITANNIC MAJESTY'S GOVERNMENT OF THE UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND [GB/GB]; Whitehall London SW1A 2HB, GB (AllExceptUS)
  • WOODS, Stephen, Clifford [GB/GB]; GB (UsOnly)
Inventors
  • WOODS, Stephen, Clifford; GB
Agents
  • BECKHAM, Robert, William; Ministry of Defence Patents 1A, Room 2014 Empress State Building Lillie Road London SW6 1TR, GB
Priority Data
8915495.906.07.1989GB
8916570.820.07.1989GB
9005217.608.03.1990GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A DETECTOR FOR MONITORING LOW MOLECULAR WEIGHT COMPOUNDS
(FR) DETECTEUR PERMETTANT DE CONTROLER DES COMPOSES DE FAIBLE POIDS MOLECULAIRE
Abstract
(EN)
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.
(FR)
Un détecteur permettant de contrôler des composés de faible poids moléculaire et tout particulièrement les alcools éthanol et méthanol dans des milieux où des contaminants de poids moléculaire supérieur peuvent également être présents. L'on fait passer des échantillons de gaz à travers un absorbant poreux qui présente une rétention relativement faible pour des composés tels que le méthanol et éthanol et une rétention relativement élevée pour des espèces de poids moléculaire plus élevé. L'on fait passer la partie de l'échantillon qui n'est pas retenue par l'absorbant à travers un réactif qui subit une variation de couleur due aux composés de faible poids moléculaire, le degré de variation de couleur étant caractéristique de la quantité de composé de faible poids moléculaire présente. L'invention s'applique en particulier au contrôle de la concentration d'alcools organiques de faible poids moléculaire tel que le méthanol et éthanol.
Also published as
Latest bibliographic data on file with the International Bureau