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1. WO2000033050 - METHOD AND DISPOSABLE DEVICES FOR MICRO EXTRACTION

Publication Number WO/2000/033050
Publication Date 08.06.2000
International Application No. PCT/NO1999/000359
International Filing Date 30.11.1999
Chapter 2 Demand Filed 16.06.2000
IPC
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 1/40 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
40Concentrating samples
CPC
G01N 1/4005
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
4005by transferring a selected component through a membrane
G01N 2001/4016
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
4005by transferring a selected component through a membrane
4016being a selective membrane, e.g. dialysis or osmosis
G01N 2001/4061
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
4055by solubility techniques
4061Solvent extraction
Applicants
  • RASMUSSEN, Knut, E. [NO]/[NO]
  • KROGH, Mette [NO]/[NO]
  • PEDERSEN-BJERGAARD, Stig [NO]/[NO]
Inventors
  • RASMUSSEN, Knut, E.
  • KROGH, Mette
  • PEDERSEN-BJERGAARD, Stig
Agents
  • HELGERUD, Jan, E.
Priority Data
1998561301.12.1998NO
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND DISPOSABLE DEVICES FOR MICRO EXTRACTION
(FR) PROCEDE ET DISPOSITIFS JETABLES PERMETTANT D'EFFECTUER UNE MICROEXTRACTION
Abstract
(EN)
An apparatus for carrying out liquid-liquid micro extraction or liquid-liquid-liquid micro extraction with high enrichment comprises: a) a container for a sample solution having volume Vs with dissolved substance, analyte, to be analysed, b) a second container arranged in the first container, preferably a disposable container, having permeable membrane walls, for an acceptor solution, having volume Va, wherein 1) Vs:Va $m(G) 50 and 2) about 1 $g(m)l $m(F) Va $m(F) 50 $g(m)l, c) stirring means, preferably a magnetic bar. The method is applicable for liquid-liquid micro extraction (LLME) and liquid-liquid-liquid micro extraction (LLLME) with high enrichment. In the latter case, a liquid immiscible with the sample solution and the acceptor solution is immobilised in the wall of the container for the acceptor solution. There is also described a disposable device for use in liquid-liquid micro extraction in the form of a sponge body having defined pore volume for absorption of an immobilised acceptor solution for an analyte from a volume of a sample solution.
(FR)
L'invention concerne un appareil permettant d'effectuer une microextraction liquide-liquide ou une microextraction liquide-liquide-liquide hautement enrichie. Cet appareil comprend a) un récipient destiné à une solution à examiner dont le volume Vs contient une substance dissoute à analyser, b) un second récipient, de préférence jetable, disposé dans le premier récipient et pourvu de parois membranaires perméables, destiné à recevoir une solution receveuse présentant un volume Va, dans lequel 1) Vs:Va $m(G) 50 et 2) environ 1 $g(m)l $m(F) Va $m(F) 50 $g(m)l, c) un dispositif d'agitation, de préférence une barre magnétique. Ce procédé peut être appliqué à une microextraction liquide-liquide et à une microextraction liquide-liquide-liquide hautement enrichie. Dans ce dernier cas, on immobilise un liquide non miscible avec la solution à examiner et la solution receveuse sur la paroi du récipient destiné à la solution receveuse. L'invention concerne également un dispositif jetable permettant d'effectuer une microextraction liquide-liquide. Ce dispositif se présente sous forme d'un corps spongieux présentant une porosité définie destinée à absorber une solution receveuse immobilisée pour une substance à analyser issue d'un volume d'une solution à examiner.
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