In this paper, we prepared a highly selective imprinted polymer by a room temperature ionic liquid-mediated
bulk polymerization technique, using dichlorvos as the template, methacrylic acid as the functional
monomers, and trimethylolpropane trimethacrylate as the cross-linker. This functionalized material was
characterized by FT-IR, static and kinetic adsorption experiments, and the results showed that this
imprinted sorbent exhibited good recognition and selective ability, and offered fast kinetics for the
adsorption and desorption of dichlorvos. Using the prepared material as a solid phase extraction sorbent,
a novel sample pre-treatment technique that can be coupled to high-performance liquid chromatography
(HPLC) had been developed for determination of trace dichlorvos residues in foods. Under the selected
experimental condition, the detection limit (S/N = 3) of dichlorvos was 94.8 ng L1, and the peak area precision
(RSD) for five replicate detections of 10 lg L1 dichlorvos was 4.41%. The blank samples of cucumber
and lettuce spiked with dichlorvos at 0.005 and 0.02 lg g1 levels were determined with recoveries
ranging from 82.1% to 94.0%.