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Low-cost H2S gas sensor based on plastic optical fiber

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  • Chemistry


A new simple and low-cost fiber optic sensor for cumulative detection of H2S and other sulphide compounds is described. The transducer is based on a plastic optical fiber and exploits a non-reversible chemical reaction, whose products interact with the evanescent field tails thus increasing the propagation losses with the exposure time. The sensor has a sensitivity of the order of few ppb

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