采用离子液体的二氧化硫电化学传感器的研究

Studies on a Sulfur Dioxide Electrochemical Sensor with Ionic Liquid as Electrolyte

作者采用离子液体作为二氧化硫传感器的电解质溶液 ,并用微分脉冲伏安法 (DifferentialPulseVoltammogram)考察了对SO2 气体的响应。结果表明 ,离子液体传感器对S2 气体有很好的电化学响应 ,灵敏度高和重现性好。其线性范围为 10 0～ 70 0ppm ,检测限为 5 0ppm。

The sulfur dioxide electrochemical sensors, with ionic liquid as electrolyte, is studied by differential pulse voltammogram. Theresults demonstrate that the sensor has a good electrochemical response to sulfur dioxide gas. In addition, the sensor is sensitive, reproducible for sulfur dioxide measurement. The linear range is over 100ppm to 700ppm and the detection limits is 50ppm.