Publications by authors named "Claire Trocquet"
Article Synopsis
- A new gas mixture generator was designed and tested, utilizing alternating axial gas pulses and a micromixer to create controlled mixtures of pollutants and nitrogen or air.
- The concentration of pollutants was adjusted through timing of gas pulses and partial pressure, while performance was validated by comparing results to a standard gas dilution system.
- The generator achieved a rapid response time of under 2 minutes and demonstrated a linear relationship in pollutant concentration, showing precision comparable to conventional methods, especially at lower concentrations.
This paper describes a compact microfluidic analytical device developed for the detection of low airborne formaldehyde concentrations. This microdevice was based on a three-step analysis, i.e.
View Article and Find Full Text PDFThis paper is focused on the improvement of a microfluidic analytical method for the detection of low airborne formaldehyde concentrations, based on only two distinct steps permitting to reduce the response time and to improve the compactness of the device. First, gaseous formaldehyde is trapped into an acetylacetone solution at 65°C through an annular liquid/gas flow and reacts immediately to form 3,5-Diacetyl-1,4-dihydrolutidine which is then quantified by colorimetry using a liquid core waveguide (LCW). To obtain an annular flow, 3 different hydrophilic silica capillaries of 320, 450 and 530µm ID were tested and the corresponding phase diagrams were obtained in the ranges of liquid and gas flows of 5-35µLmin and 5-35mLmin respectively.
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