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Diazonium Salt-Based Surface-Enhanced Raman Spectroscopy Nanosensor: Detection and Quantitation of Aromatic Hydrocarbons in Water Samples ArchiMer
Tijunelyte, Inga; Betelu, Stephanie; Moreau, Jonathan; Ignatiadis, Ioannis; Berho, Catherine; Lidgi-guigui, Nathalie; Guenin, Erwann; David, Catalina; Vergnole, Sebastien; Rinnert, Emmanuel; Lamy De La Chapelle, Marc.
Here, we present a surface-enhanced Raman spectroscopy (SERS) nanosensor for environmental pollutants detection. This study was conducted on three polycyclic aromatic hydrocarbons (PAHs): benzo[a]pyrene (BaP), fluoranthene (FL), and naphthalene (NAP). SERS substrates were chemically functionalized using 4-dodecyl benzenediazonium-tetrafluoroborate and SERS analyses were conducted to detect the pollutants alone and in mixtures. Compounds were first measured in water-methanol (9:1 volume ratio) samples. Investigation on solutions containing concentrations ranging from 10−6 g L−1 to 10−3 g L−1 provided data to plot calibration curves and to determine the performance of the sensor. The calculated limit of detection (LOD) was 0.026 mg L−1 (10−7 mol L−1) for...
Tipo: Text Palavras-chave: Polynuclear aromatic hydrocarbon (PAH); Surface-enhanced Raman spectroscopy (SERS); Nanosensor; Diazonium salt; Surface functionalization; Detection.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00386/49772/50316.pdf
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Fast identification and quantification of BTEX coupling by Raman spectrometry and chemometrics ArchiMer
Moreau, Jonathan; Rinnert, Emmanuel.
Monoaromatic hydrocarbons (MAHs) monitoring is of environmental interest since these chemical pollutants are omnipresent. While waiting for robust sensors able to detect hydrocarbons at very low levels, the present study shows how each compound from pure BTEX mixtures can be identified fast and quantified thanks to Raman spectrometry and data processing based on the SIMPLISMA algorithm. A preprocessing module has been created to remove background contributions and a postprocessing program has been added to achieve matching and calibration. A wide range of BTEX concentrations and relative proportions has been investigated in order to determine the limitations of the processing. Output results achieved an accuracy of up to 95%. This method could be extended...
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Ano: 2015 URL: http://archimer.ifremer.fr/doc/00270/38149/36553.pdf
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Toward Chalcogenide Platform Infrared Sensor Dedicated to the In Situ Detection of Aromatic Hydrocarbons in Natural Waters via an Attenuated Total Reflection Spectroscopy Study ArchiMer
Baillieul, Marion; Baudet, Emeline; Michel, Karine; Moreau, Jonathan; Němec, Petr; Boukerma, Kada; Colas, Florent; Charrier, Joël; Bureau, Bruno; Rinnert, Emmanuel; Nazabal, Virginie.
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...
Tipo: Text Palavras-chave: Optical infrared sensor; Chalcogenide glasses; Mid-infrared; Mono-aromatic hydrocarbons; Natural waters; BTEXs; PAHs.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00687/79947/82867.pdf
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