基于杂多酸修饰电极NOx传感器的制备与应用

氮氧化物NOx是一类重要的环境污染物，对其进行监测十分必要。通过电化学方法制备了金钼杂多酸薄膜修饰电极，研究了该电极的电化学行为及其对酸性水溶液中NOx的电催化作用。结果表明，在5．0×10^-4-1．6×10^-2moL／L范围内NOx浓度与其氧化峰电流之间呈线性关系，检出限可达8．0×10^-5mol／L，满足环境水样中NOx的检测要求。

Appfication and Preparation of NOx Sensor Based on Heteropoly Anion Film Modified Electrode

Nitrous Oxides（NOx）was a kind of important environmental pollutants, so it was necessary to monitor NOx. The Au- Mo electrode was prepared by using electrochemical methods at glassy carbon electrode. The electrechemical behavior of Au - Mo was investigated by cyclic voltammetry. The results showed that the NOx concentration and oxidation peak current was linear in the range of 5.0 ×10^-4 - 1.6×10^- 2mol/L, and the lowest- limits detected of NOx was 8.0 ×10^-5 mol/L.The modified electrode could be used for the detection of nitrous oxides（NOx） in wastewater.