In order to improve the selectivity of the sensor, an impedance gas sensor based on NaX zeolite film is developed.The sensitivity of the sensor for DMMP gas is determined by the impedance response.

• 利用沸石分子筛较强的吸附能力与潜在的化学反应，通过传感器交流阻抗谱的变化实现传感器灵敏度的检测。