Molecularly imprinted electrochemical sensor for monitoring mercaptan sulfur in aviation biofuel

•Mercaptans are considered contaminants of aviation biofuel.•The study reports the development of a molecularly imprinted electrochemical sensor for monitoring mercaptan sulfur.•Butanethiol was used for the formation of recognition sites on the electrode surface.•The proposed sensor exhibited a detection limit of 6.1 × 10−13 mol L−1.•The analytical method was successfully applied for monitoring mercaptan in aviation biofuel sample.