This work reports the development and application of a molecularly imprinted electrochemical sensor based on the electropolymerization of pyrrole film on glassy carbon electrode for monitoring mercaptan sulfur in aviation biofuel. To this end, butanethiol was used as a template molecule for the formation of imprinted cavities in the polypyrrole structure. The modified electrode was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy and energy dispersive X-ray spectroscopy. After the optimization of the experimental conditions, the sensor presented linear working ranges in the concentration range of 1.0 × 10⁻¹² to 1.0 × 10⁻¹⁰ mol L⁻¹. The values obtained for the amperometric sensitivity and the limits of detection and quantification of this device were 5.1 × 10⁵ A L mol⁻¹, 6.1 × 10⁻¹³ mol L⁻¹, and 2.0 × 10⁻¹² mol L⁻¹, respectively. The proposed sensor showed excellent selectivity, remarkable repeatability and high stability for butanethiol detection. The proposed electroanalytical method was successfully applied in aviation biofuel sample where it exhibited recovery values between 98% and 107%, with relative standard deviation ranging from 1.1% to 4.1%. The results obtained show that the proposed sensor has good accuracy and can be successfully applied for monitoring mercaptan sulfur in aviation biofuel samples.

这项工作报告了基于玻碳电极上吡咯膜电聚合的分子印迹电化学传感器的开发和应用，用于监测航空生物燃料中的硫醇硫。为此，丁硫醇被用作模板分子，用于在聚吡咯结构中形成印迹空腔。通过循环伏安法、电化学阻抗谱、扫描电子显微镜和能量色散X射线光谱对修饰电极进行了表征。经过实验条件的优化，传感器在1.0×10 ^-12至1.0×10 ^-10  mol L ^-1的浓度范围内呈现线性工作范围. 该装置的电流灵敏度和检测限和定量限获得的值为 5.1 × 10 ⁵ AL mol ^-1、6.1 × 10 ^-13  mol L ^-1和 2.0 × 10 ^-12  mol L ^-1， 分别。所提出的传感器对丁硫醇检测显示出优异的选择性、显着的重复性和高稳定性。所提出的电分析方法成功应用于航空生物燃料样品，其回收率在 98% 至 107% 之间，相对标准偏差在 1.1% 至 4.1% 之间。所得结果表明，所提出的传感器具有良好的精度，可成功应用于航空生物燃料样品中硫醇硫的监测。