Electrochemical Sensor Based on Molecularly Imprinted Polymer (MIP) for Simazine Pesticide Detection

Abstract

The use of pesticides and herbicides containing the active ingredient simazine must be carried out strictly so as not to cause adverse effects on humans and the environment. Measurement of contaminants in the form of simazine as one of the active ingredients of pesticides and herbicides is very important. An imprinted polymer molecule (MIP) has been made using methacrylic acid (MAA) as a functional monomer and ethylene glycol dimethyl acrylate (EGDMA) as a cross-linker. This research resulted in a molecularly imprinted membrane for the specific recognition of.simazine. The electrochemical potential used with MIP coated electrodes provides both qualitative and quantitative detection of.simazine. Polymer coated molecular-based potentiometric sensors (MIP) are promising analytical tools for developing highly selective analytical sensors. Optimal conditions for the production of.simazine MIP were found to be 6.02 mL of chloroform, 0.025 g of simazine, 0.9 mL of MAA, 1.57 mL of EGDMA, and 0.07 g of benzoyl peroxide (BPO) with a heating time of 150 minutes at 70°C. The results of the electrode performance test resulted in stable and unstable conditions, with a measurement range on the surface of the double-layer electrode with a coefficient distribution of 0.9897. Compared with electrochemical procedures with MIPs sensors and spectrophotometry, it produces a significant value with a 95% confidence level with Q-test results for the 0.48 ppm level with spectrometric procedures obtained Q exp = 0.25, Q crit value is 0.71