Processing

Please wait...

Settings

Settings

Goto Application

1. WO2012065099 - PORTABLE VACUUM GAS CHROMATOGRAPH

Publication Number WO/2012/065099
Publication Date 18.05.2012
International Application No. PCT/US2011/060429
International Filing Date 11.11.2011
IPC
G01N 30/88 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02Column chromatography
88Integrated analysis systems specially adapted therefor, not covered by a single one of groups G01N30/04-G01N30/86146
G01N 1/24 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
24Suction devices
G01N 33/00 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
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 30/24 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02Column chromatography
04Preparation or injection of sample to be analysed
24Automatic injection systems
G01N 30/20 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02Column chromatography
04Preparation or injection of sample to be analysed
16Injection
20using a sampling valve
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 1/2273
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
2273Atmospheric sampling
G01N 2001/248
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
24Suction devices
248Evacuated containers
G01N 2030/8881
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02Column chromatography
88Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
8881Modular construction, specially adapted therefor
G01N 2033/0019
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
0004Gaseous mixtures, e.g. polluted air
0009General constructional details of gas analysers, e.g. portable test equipment
0011Sample conditioning
0019by preconcentration
G01N 30/08
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
30Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
02Column chromatography
04Preparation or injection of sample to be analysed
06Preparation
08using an enricher
Applicants
  • MEADOWORKS, INC. [US]/[US] (AllExceptUS)
  • CATES, Marion, H. [US]/[US] (UsOnly)
Inventors
  • CATES, Marion, H.
Agents
  • JAMES, Richard, W.
Priority Data
12/944,72212.11.2010US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PORTABLE VACUUM GAS CHROMATOGRAPH
(FR) DÉTECTEUR DE GAZ PAR CHROMATOGRAPHIE SOUS VIDE
Abstract
(EN)
A portable gas chromatography system and method of use. The portable gas chromatograph may be used to accurately and rapidly detect low-level concentrations of chemicals, such as fixed gases, volatilized liquid samples, or toxic chemicals and transmit to a user data relating to the presence and identity of such. The portable gas chromatograph uses an onboard vacuum source to pull samples into and through the system and thus does not require the use of a carrier gas. Further, the system comprises a solenoid valve for capturing the sample and may include a short porous layer open tubular separation column, and a thermal conductivity detector. Overall size and weight of the system is small enough for a user to carry. The method of operation of the gas chromatograph includes taking rapid successive samples and analyzing the data outputs using Fourier transform techniques. Such analysis allows real-time data updates and rapid detection of hazardous environmental agents.
(FR)
L'invention concerne un système portable de chromatographie de gaz et un procédé d'utilisation. Le chromatographe à gaz portable peut être utilisé pour détecter précisément et rapidement de faibles niveaux de concentrations de produits chimiques, tels que des gaz difficilement liquéfiables, des échantillons liquides volatilisés ou des produits chimiques toxiques, et pour transmettre à un utilisateur des données se rapportant à la présence et à l'identité de tels produits. Le chromatographe à gaz portable utilise une source de vide de bord pour tirer des échantillons dans et à travers le système et, de ce fait, ne nécessite pas l'utilisation d'un gaz porteur. De plus, le système comporte une électrovalve pour capturer l'échantillon et peut comprendre une courte colonne de séparation tubulaire, ouverte, à couche poreuse et un détecteur de conductivité thermique. La dimension globale et le poids du système sont suffisamment petits pour qu'un utilisateur puisse le transporter. Le procédé de fonctionnement du chromatographe à gaz consiste à prendre des échantillons successifs rapides et à analyser les sorties de données à l'aide des techniques à transformée de Fourier. Une telle analyse permet des mises à jour de données en temps réel et une détection rapide d'agents environnementaux dangereux.
Latest bibliographic data on file with the International Bureau