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The effectiveness of a highly sensitive sodium dodecyl benzenesulfonate (SDBS)–TiO2 thin film optical waveguide gas sensor assessed in detecting various organic gases. Gas sensing measurements indicated that the sensing element has good selectivity, high sensitivity, and a low detection limit of 1 ppb to xylene gas with fast response and short recovery times. Interference gas test results showed that the sensitive component can detect 1 ppm of xylene gas in a mixed system containing other interfering gases, thus demonstrating the effectiveness of the proposed sensor for organic gas detection.
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Zhang et al. (2020) studied this question.
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