脉冲伏安法快速测定溶液中多菌灵含量

摘要

制备了纳米金-多壁碳纳米管复合物修饰电极,用循环伏安法研究了多菌灵在该修饰电极上的电化学行为.结果表明,多菌灵在1.08 V处出现了一个不可逆氧化峰,该氧化过程受扩散控制.在1.0×10-6 mol/L～1.0×10-4 mol/L范围内,脉冲伏安法的氧化峰电流与多菌灵浓度呈现良好的线性关系.该复合物修饰电极可快速、方便、灵敏地检测溶液中多菌灵含量.%The composites of gold nanoparticles-multiwalled nanotubes modified glass carbon electrode was prepared and characterized by cyclic voltammetry. Electrochemical behaviors of carbendazim in the modified electrode were studied The results indicated that an irreversible oxidation peak was observed for carbendazim in 1. 08 V and the oxidation process was controlled by diffusion. The modified electrode showed a good linear current response for carbendazim in the range from 1. 0×10-6 to 1. 0× 10-1 mol/L by differential pulse voltammetry. The composites modified electrode can be explored as a rapid > convenient and sensitive method to determine the carbendazim content in solution.