Binding characteristics of molecularly imprinted polymers based on fungicides in hydroalcoholic media |
| |
Authors: | Manal Bitar Elias Bou‐Maroun Adrien Lerbret Naim Ouaini Philippe Cayot |
| |
Institution: | 1. Unité Procédés Alimentaires et Microbiologiques, UMR A 02.102, AgroSup Dijon, Université de Bourgogne, Dijon, France;2. Département des Sciences Fondamentales de la Santé, Faculté de Médecine et des Sciences Médicales, Université Saint‐Esprit de Kaslik, Jounieh, Liban |
| |
Abstract: | An iprodione‐imprinted polymer was prepared by copolymerization of methacrylamide and ethylene glycol dimethacrylate using a noncovalent imprinting approach. Methacrylamide was chosen using molecular dynamics simulations. To concentrate iprodione from hydro‐alcoholic solutions, batch sorption of iprodione on the imprinted polymer were conducted. The equilibrium time for iprodione sorption is 20 min, and the corresponding kinetic mechanism follows the pseudo‐second order indicating a strong interaction between iprodione and the imprinted polymer. Langmuir, Freundlich, and Dubinin–Radushkevich models were used to fit the isotherm of iprodione sorption. The imprinted polymer was found to be more efficient than the nonimprinted polymer for the uptake of iprodione, as revealed by its higher adsorption energy, affinity, and capacity. Finally, a selectivity study was conducted on the imprinted and the nonimprinted polymers to sorb three fungicides. It shows that the imprinted polymer could be used as a preconcentration phase in a multiresidue analysis of fungicides in hydroalcoholic medium. |
| |
Keywords: | Fungicides Molecularly imprinted polymers Molecular simulations Specific sorption |
|
|