采用超声辅助水热/溶剂热生长法制备了高质量ZnS: Eu2+光学气敏材料，搭建了一套由ZnS: Eu2+气敏薄膜、简易气室、微型光纤光谱仪及配套软件构成的气体传感器用以检测H2S 气体浓度，该传感器稳定性好，抗干扰能力强。采用荧光猝灭原理Stern-Volmer方程发现，被测H2S气体浓度与敏感元件荧光猝灭信号呈线性对应关系，传感器响应快，可实现对低浓度H2S气体的高灵敏度检测。

High quality ZnS: Eu2 + gas- sensitive materials have been synthesized by the ultrasound assisted hydrothermal/solvothermal method, and a gas sensor which contains ZnS: Eu2 + gas- sensitive film, simple chamber, miniature fiber optic spectrometer as well as the supporting software has been put forward. The gas sensor has good stability and strong anti-jamming capability. It is found that the H2S gas concentration and the sensitive component′ s fluorescence quenching signal correspond to linear relationship via fluorescence quenching Stern- Volmer equation, which indicates that the gas sensor responds quickly and can be used for high sensitivity real-time online monitoring of H2S gas concentration.