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      Development of a Toluene Detector Based on Deep UV Absorption Spectrophotometry Using Glass and Aluminum Capillary Tube Gas Cells with a LED Source

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          Abstract

          A simple deep-ultraviolet (UV) absorption spectrophotometer based on ultraviolet light-emitting diode (UV LED) was developed for the detection of air-borne toluene with a good sensitivity. A fiber-coupled deep UV-LED was employed as a light source, and a spectrometer was used as a detector with a gas cell in between. 3D printed opto-fluidics connectors were designed to integrate the gas flow with UV light. Two types of hollow core waveguides (HCW) were tested as gas cells: a glass capillary tube with aluminum-coated inner walls and an aluminum capillary tube. The setup was tested for different toluene concentrations (10–100 ppm), and a linear relationship was observed with sensitivities of 0.20 mA·U/ppm and 0.32 mA·U/ppm for the glass and aluminum HCWs, respectively. The corresponding limits of detection were found to be 8.1 ppm and 12.4 ppm, respectively.

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          Optical sensor arrays for chemical sensing: the optoelectronic nose.

          A comprehensive review is presented on the development and state of the art of colorimetric and fluorometric sensor arrays. Optical arrays based on chemoresponsive colorants (dyes and nanoporous pigments) probe the chemical reactivity of analytes, rather than their physical properties. This provides a high dimensionality to chemical sensing that permits high sensitivity (often down to ppb levels), impressive discrimination among very similar analytes and exquisite fingerprinting of extremely similar mixtures over a wide range of analyte types, both in the gas and liquid phases.
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            • Record: found
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            • Article: not found

            Removal of Volatile Organic Compounds from polluted air

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              Resistive-based gas sensors for detection of benzene, toluene and xylene (BTX) gases: a review

              Sensing of benzene, toluene and xylene gases using resistive-based gas sensors. Benzene, toluene, and xylene gases, which are known collectively as BTX gases, are volatile organic compounds (VOCs) that are used extensively in many industrial products. Nevertheless, BTX gases are quite toxic and need to be detected by sensitive sensors as fast as possible. Among the various gas sensors available, resistive-based gas sensors are among the most promising candidates for the detection of these gases. On the other hand, it is difficult to realize resistive-based gas sensors with high sensitivity to BTX gases owing to their relatively low chemical reactivity. In addition, the selective detection of a single gas among the BTX gases is challenging because of their similar nature and structure. This review discusses the different strategies employed in resistive-based gas sensors for the realization of high performance BTX gas sensors.
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                Author and article information

                Journal
                Micromachines (Basel)
                Micromachines (Basel)
                micromachines
                Micromachines
                MDPI
                2072-666X
                18 March 2019
                March 2019
                : 10
                : 3
                : 193
                Affiliations
                [1 ]School of Engineering, Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland; sulaiman.khan@ 123456ul.ie (S.K.); david.newport@ 123456ul.ie (D.N.)
                [2 ]Université de Strasbourg, CNRS, ICPEES UMR 7515, F-67000 Strasbourg, France
                [3 ]In’Air Solutions, 67087 Strasbourg, France
                Author notes
                [* ]Correspondence: slecalve@ 123456unistra.fr
                Author information
                https://orcid.org/0000-0002-8679-917X
                Article
                micromachines-10-00193
                10.3390/mi10030193
                6470734
                30889824
                600975f4-d34f-4b3e-b130-242193c38496
                © 2019 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 14 February 2019
                : 11 March 2019
                Categories
                Article

                ultraviolet light-emitting diode (uv led),spectrophotometry,uv absorption,gas sensors,benzene, toluene, ethylbenzene and xylene (btex),toluene,hollow core waveguides,capillary tubes

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