RESUMO
A series of diazinon imprinted polymers (MIPs) were prepared and evaluated in the binding study in comparison with a non-imprinted polymer (NIP). The optimised MIP was evaluated as a sorbent, for extraction and preconcentration of diazinon from aqueous media and cucumber tissue. The HPLC-UV method was calibrated, in the range of 0.025-10 mg/kg. The results indicated that the optimised MIP had an excellent affinity for diazinon. The molecularly imprinted solid-phase extraction (MISPE) procedure was optimised with a recovery of 77-98%, in aqueous solution, and a recovery of 82-110%, in cucumber. The intra-day variation and inter-day variation values were less than 8.26% and 9.7%, respectively. Our data showed that, the MIP enabled the extraction of trace amounts of diazinon successfully from aqueous solution and cucumber, demonstrating the potential of MISPE for rapid, sensitive and cost-effective sample analysis.
