Herein, a surface-sensitive sensor was reported as an optical waveguide (OWG) gas sensor. The sensor exhibited some advantages, including simple preparation and high sensitivity. Further, it could be operated at room temperature. TiO₂ and ZnFe₂O₄ were employed as sensitive materials to prepare a sensor with a high response to styrene gas. The TiO₂–ZnFe₂O₄ sol was prepared by doping ZnFe₂O₄ via the preparation of a TiO₂ thin film, and the TiO₂–ZnFe₂O₄ sol was fixed at the surface of the tin-doped glass waveguide by the dip-pulling method. Furthermore, the optimum conditions of the sensor were studied, and the sensors that were prepared under optimum conditions were employed to detect different concentrations of styrene gases. The results demonstrated that the sensor exhibited a high response to the determination of styrene and was reusable. Moreover, it could detect styrene across the concentration range from 1,000 ppm to 100 ppb at ambient temperature.

在本文中，报道了表面敏感传感器作为光波导（OWG）气体传感器。该传感器具有一些优点，包括制备简单和灵敏度高。此外，它可以在室温下操作。TiO ₂和ZnFe ₂ O ₄被用作敏感材料，以制备对苯乙烯气体具有高响应的传感器。TiO ₂ -ZnFe ₂ O ₄溶胶是通过掺杂TiO ₂薄膜和TiO ₂ -ZnFe ₂ O ₄掺杂ZnFe ₂ O ₄来制备的。通过浸入拉法将溶胶固定在掺锡玻璃波导的表面上。此外，研究了传感器的最佳条件，并采用在最佳条件下制备的传感器来检测不同浓度的苯乙烯气体。结果表明该传感器对苯乙烯的测定显示出高响应，并且可以重复使用。此外，它可以在环境温度下检测浓度范围从1,000 ppm到100 ppb的苯乙烯。