Toward Chalcogenide Platform Infrared Sensor Dedicated to the In Situ Detection of Aromatic Hydrocarbons in Natural Waters via an Attenuated Total Reflection Spectroscopy Study

Type Article
Date 2021-04
Language English
Author(s) Baillieul Marion1, 2, Baudet Emeline1, Michel Karine3, Moreau Jonathan2, Němec PetrORCID4, Boukerma Kada2, Colas Florent2, Charrier Joël5, Bureau Bruno1, Rinnert EmmanuelORCID2, Nazabal VirginieORCID1
Affiliation(s) 1 : Institut des Sciences Chimiques de Rennes, UMR-CNRS 6226, Equipe Verres et Céramiques, Université de Rennes 1, 35042 Rennes, France
2 : IFREMER, Centre Bretagne, Laboratoire Détection, Capteurs et Mesures, CS10070, 29280 Plouzané, France
3 : BRGM, Direction Eau, Environnement et Ecotechnologies, Unité Bio-Géochimie Environnementale et Qualité de l’Eau, 45060 Orléans, France
4 : Department of Graphic Arts and Photophysics, Faculty of Chemical Technology, University of Pardubice, Studentska 573, 53210 Pardubice, Czech Republic
5 : FOTON-UMR-CNRS 6082, ENSSAT BP80518, 22305 Lannion, France
Source Sensors (1424-8220) (MDPI AG), 2021-04 , Vol. 21 , N. 7 , P. 2449 (16p.)
DOI 10.3390/s21072449
Note This article belongs to the Section Chemical Sensors
Keyword(s) optical infrared sensor, chalcogenide glasses, mid-infrared, mono-aromatic hydrocarbons, natural waters, BTEXs, PAHs
Abstract

he objective of this study is to demonstrate the successful functionalization of the surface of a chalcogenide infrared waveguide with the ultimate goal of developing an infrared micro-sensor device. First, a polyisobutylene coating was selected by testing its physico-chemical compatibility with a Ge-Sb-Se selenide surface. To simulate the chalcogenide platform infrared sensor, the detection of benzene, toluene, and ortho-, meta- and para-xylenes was efficaciously performed using a polyisobutylene layer spin-coated on 1 and 2.5 µm co-sputtered selenide films of Ge28Sb12Se60 composition deposited on a zinc selenide prism used for attenuated total reflection spectroscopy. The thickness of the polymer coating was optimized by attenuated total reflection spectroscopy to achieve the highest possible attenuation of water absorption while maintaining the diffusion rate of the pollutant through the polymer film compatible with the targeted in situ analysis. Then, natural water, i.e., groundwater, wastewater, and seawater, was sampled for detection measurement by means of attenuated total reflection spectroscopy. This study is a valuable contribution concerning the functionalization by a hydrophobic polymer compatible with a chalcogenide optical sensor designed to operate in the mid-infrared spectral range to detect in situ organic molecules in natural water.

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Baillieul Marion, Baudet Emeline, Michel Karine, Moreau Jonathan, Němec Petr, Boukerma Kada, Colas Florent, Charrier Joël, Bureau Bruno, Rinnert Emmanuel, Nazabal Virginie (2021). Toward Chalcogenide Platform Infrared Sensor Dedicated to the In Situ Detection of Aromatic Hydrocarbons in Natural Waters via an Attenuated Total Reflection Spectroscopy Study. Sensors, 21(7), 2449 (16p.). Publisher's official version : https://doi.org/10.3390/s21072449 , Open Access version : https://archimer.ifremer.fr/doc/00687/79947/