公开(公告)号：US20220381754A1

公开(公告)日：2022-12-01

申请号：US17619581

申请日：2020-06-22

Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  IN' AIR SOLUTIONS ,  UNIVERSITE DE STRASBOURG ,  ASSOCIATION POUR LA RECHERCHE ET LE DEVELOPPEMENT DE METHODES ET PROCESSUS INDUSTRIELS- ARMINES

Inventor： Stéphane LE CALVE ,  Christina ANDRIKOPOULOU ,  Anais BECKER ,  Pierre BERNHARDT ,  Claire TROCQUET ,  Hervé PLAISANCE

IPC: G01N33/00 ,  G01N21/03 ,  G01N21/64 ,  G01N21/25

Abstract: A method for analyzing a gaseous pollutant by means of a microfluid circuit includes a means for pumping a liquid and a means for trapping a gas, comprising the following steps: a) generating a flow of a liquid, the liquid comprising a selective derivative agent; b) trapping and dissolving gaseous pollutant in the flow; c) reaction of the pollutant with the selective derivative agent so as to form a liquid derivative compound; d) measuring the concentration of liquid derivative compound and determining the concentration of gaseous pollutant.

公开(公告)号：US20220146479A1

公开(公告)日：2022-05-12

申请号：US17436402

申请日：2020-02-18

Applicant: Centre National De La Recherche Scientifique ,  In' Air Solutions ,  Universite De Strasbourg

Inventor： Stéphane LECALVE ,  Florian NOEL ,  Christophe SERRA

IPC: G01N33/00 ,  G05D11/13

Abstract: A method for generating a gaseous mixture by means of an apparatus including at least two inputs, of which the first is an input for a carrier gas and the second is an input for a pollutant and at least one gas output, a system of solenoid valves, a microfluidic circuit and a mixing cell, the microfluidic circuit comprising a sub-circuit that can be isolated or connected with the mixing cell by virtue of the system of solenoid valves is provided. The method includes the following steps: a) cleaning of the microfluidic circuit by pure air received on the first input; b) forming a first air stream with a gas received on the first input of the apparatus, sending of this first air stream to the mixing cell and addition of a pollutant in the sub-circuit isolated from the mixing cell from at least one pollutant received on the second input of the apparatus; and c) opening of the sub-circuit by the system of solenoid valves, so that the sub-circuit is linked to the first input of the apparatus supplied with gas and to the input of the mixing cell, the opening of the sub-circuit provoking the sending of a second air stream to the mixing cell; wherein the steps b) and c) are repeated until the desired quantity of gaseous mixture is obtained at the output of the mixing cell.