Selective separation of deltamethrin by molecularly imprinted polymers using a β-cyclodextrin derivative as the functional monomer |
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| Authors: | Zhi F Xu Ge Wen Dai Z Kuang Fu X Zhang Si P Tang |
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| Institution: | 1. Department of Chemistry and Material Science , Hengyang Normal University, Key Laboratory of Functional Organometallic Materials, College of Hunan Province , Hengyang , China;2. Unisplendour Guhan Group Hengyang Chinese Medicines Corporation Limited , Hengyang , China |
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| Abstract: | A deltamethrin-imprinted polymer (MIP1) was prepared using bis(-6-O-butanediacid monoester)-β-cyclodextrin (BBA-β-CD) as the functional monomer and toluene 2,4-diisocyanate (TDI) as the cross-linker. In comparison to the molecularly imprinted polymer where β-CD was applied as the functional monomer (MIP2), MIP1 showed a higher specific binding capacity (ΔCP) and an improved imprinting factor (IF) for deltamethrin. The selective recognition experiments demonstrated that compared to MIP2, MIP1 could better recognize its template over other substrates that had similar chemical structures. The solid phase extraction (SPE) of deltamethrin using MIP1 as the adsorbent was further investigated. The recoveries of the molecularly imprinted solid phase extraction (MISPE) column for deltamethrin were 83.2–93.4% with relative standard deviations (RSD) of 2.03–6.19%. The method has been successfully applied to the enrichment of trace deltamethrin from real water samples. |
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| Keywords: | β-cyclodextrin molecular imprinting deltamethrin molecular recognition solid phase extraction |
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