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1. WO2020065042 - METHOD FOR CLEANING AND/OR REGENERATING A GLASS MICROFLUIDIC SENSOR FOR THE ANALYSIS OF METALS

Publication Number WO/2020/065042
Publication Date 02.04.2020
International Application No. PCT/EP2019/076253
International Filing Date 27.09.2019
IPC
B01L 3/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
3Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
G01N 27/38 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
28Electrolytic cell components
30Electrodes, e.g. test electrodes; Half-cells
38Cleaning of electrodes
CPC
B01L 2200/141
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
2200Solutions for specific problems relating to chemical or physical laboratory apparatus
14Process control and prevention of errors
141Preventing contamination, tampering
B01L 2300/0645
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
2300Additional constructional details
06Auxiliary integrated devices, integrated components
0627Sensor or part of a sensor is integrated
0645Electrodes
B01L 2300/12
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
2300Additional constructional details
12Specific details about materials
B01L 3/502715
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
3Containers or dishes for laboratory use, e.g. laboratory glassware
50Containers for the purpose of retaining a material to be analysed, e.g. test tubes
502with fluid transport, e.g. in multi-compartment structures
5027by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
502715characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces
G01N 27/38
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
27Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
26by investigating electrochemical variables; by using electrolysis or electrophoresis
28Electrolytic cell components
30Electrodes, e.g. test electrodes; Half-cells
38Cleaning of electrodes
Applicants
  • KLEARIA [FR]/[FR]
Inventors
  • DOUNGMENE, Floriant
  • GAUTRIN, Lisa
  • NANTEUIL, Clément
Agents
  • HABASQUE, Etienne
  • COLOMBIE, Damien
  • BLOT, Philippe
  • DOMENEGO, Bertrand
  • NEYRET, Daniel
  • HOLTZ, Béatrice
Priority Data
185899128.09.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR CLEANING AND/OR REGENERATING A GLASS MICROFLUIDIC SENSOR FOR THE ANALYSIS OF METALS
(FR) PROCÉDÉ DE NETTOYAGE ET/OU DE RÉGÉNÉRATION D'UN CAPTEUR MICROFLUIDIQUE EN VERRE POUR L'ANALYSE DE MÉTAUX
Abstract
(EN)
The subject of the present invention is a microfluidic method for cleaning and/or regenerating at least one microfluidic sensor comprising at least one glass microchannel forming a microfluidic circuit and at least two electrodes, comprising at least the following steps: • - a step N) of cleaning the microfluidic circuit comprising at least the circulation of a sample of fluid in the microchannel; and • - a step of cleaning the microfluidic circuit comprising at least the circulation of a nitric acid solution in the microchannel. Preferably, the microfluidic sensor to be cleaned and/or to be regenerated comprises a gold work electrode and is suitable for the detection of metallic trace elements, such as arsenic, which may be present in a liquid, such as water.
(FR)
La présente invention a pour objet un procédé microfluidique de nettoyage et/ou de régénération d'au moins un capteur microfluidique comprenant au moins un microcanal en verre formant un circuit microfluidique et au moins deux électrodes, comprenant au moins les étapes suivantes : • - une étape N) de nettoyage du circuit microfluidique comprenant au moins la circulation d'un échantillon de fluide dans le microcanal; et • - une étape de nettoyage du circuit microfluidique comprenant au moins la circulation d'une solution d'acide nitrique dans le microcanal. De préférence, le capteur microfluidique à nettoyer et/ou à régénérer comprend une électrode de travail en or et est adapté à la détection des éléments-traces métalliques, tel l'arsenic, qui peuvent être présents dans un liquide, tel l'eau.
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