Toward the development of sensors for lung cancer: the adsorption of 1-propanol on hydrophobic zeolites
Résumé
A healthy breath is mainly composed of water, carbon dioxide, molecular nitrogen and oxygen and it contains many species, in small quantities, which are related to the ambient atmosphere and the metabolism. The breath of a person affected by lung cancer presents a higher concentration of 1-propanol than usual. In this context, the development of specific sensors to detect 1-propanol from breath is of high interest. The amount of propanol usually detected in the breath is of few ppb, this small quantity is a handicap for reliable diagnostic. This can be overcome if the sensor is equipped with a pre-concentrator. Our studies search to provide an efficient material playing this role. This will contribute to the development of easy to use reliable lung cancer detectors. For this we investigate the properties of some hydrophobic porous materials (chabazite, silicalite-1 and dealuminated faujasite). The use of hydrophobic structures is to avoid the saturation of the material with the water of the exhaled breath. Our experimental and simulation results suggest that the silicalite -1 (MFI) is the most suitable structure.
Domaines
Chimie-Physique [physics.chem-ph]
Origine : Fichiers produits par l'(les) auteur(s)
Licence : Copyright (Tous droits réservés)
Licence : Copyright (Tous droits réservés)