Endosulfan pesticide detection using an electrochemical sensor based on molecularly imprinted polymer (MIP)

Pesticides and herbicides are active chemicals used to eradicate plant pests which constitute contamination if they exceed the threshold for the environment and humans. Molecularly Imprinted Polymer (MIP) is a technique for making polymers that are obtained from cross-linked polymers and have cavities that match the template, where the cavities function as a medium for mechanical interaction of molecules with the same size, shape, structure, and physicochemical properties. The polymer produced from the MIP technique is applied to the surface of the sensor material as an endosulfan detection. This research aims to create an endosulfan MIP to obtain a potentiometric MIP sensor capable of detecting endosulfan. The results showed that the optimum conditions for making MIP endosulfan were obtained with a composition of 6.02 mL of chloroform; 0.025 g endosulfan; 0.9 mL methacrylic acid (MAA); 1.57 mL ethylene glycol dimethacrylate acid (EGDMA); 0.07 g benzoyl peroxide with a heating time of 150 minutes at a temperature of 70 °C. The sensor performance test was carried out potentiometrically and it was found that the MIP endosulfan sensor that was made had sensitivity and stability in the concentration range of 0.01-1.0x10 −6 ppm with a lifetime up to 90 days.