Abstract
In this study, a novel functionalized material was synthesized using moncrotophos as template molecule, methacrylic acid as functional monomer, and ethylene glycol dimethacrylate as cross-linker. The adsorption ability of the imprinted polymer toward moncrotophos was characterized by static adsorption experiments; the results showed that it had higher adsorption capacity than the non-imprinted polymer. Scatchard analysis indicated that the specific binding sites in the prepared material were heterogeneous and could be classified into two distinct groups. For the saturated adsorption capacity, (Qmax1) was 18.76 mg/g due to the high affinity binding sites, and the other saturated adsorption capacity (Qmax2) was 4.66 mg/g due to the low affinity binding sites. The prepared material also offered fast kinetics for adsorption and desorption of moncrotophos. After shaking for 90 min, an adsorption capacity of 4.48 mg/g was obtained. The material exhibited higher selective recognition properties toward moncrotophos than toward structurally related compounds. Thus, it had the potential to be used as a selective sorbent in solid-phase extraction.
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