Journal
MICROCHIMICA ACTA
Volume 183, Issue 4, Pages 1433-1439Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-016-1765-z
Keywords
Benzimidazole carbamate; Scanning electron microscopy; Zeta potential; X-ray diffraction; FTIR; X-ray photoelectron spectroscopy; Solid-phase extraction; Gold nanoparticles
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Funding
- Natural Science Foundation of Hainan Province of China [20152024]
- Fundamental Scientific Research Funds for Chinese Academy of Tropical Agricultural Sciences [1630042015009]
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The authors describe a nanomaterial for solid-phase extraction of carbendazim. Magnetic molecularly imprinted polymer nanoparticles (mag-MIP-NPs) were obtained by immobilizing the MIP and a thiolated beta-cyclodextrin on the surface of magnetite (Fe3O4) nanoparticles coated with gold nanoparticles. Both the recognition sites of the MIP and the hydrophobic cavities in the beta-cyclodextrin contribute to the specific molecular recognition and extraction of carbendazim. The mag-MIP-NPs have an apparent adsorption capacity of 190 mga <...gaEuro3/4(1). Spiked vegetables were analyzed by using this material for extraction of carbendazim prior to its determination by ultra performance liquid chromatography (UHPLC). Recoveries range from 90.5 % to 109 %, and the detection limit is 3.0 pga <...mLaEuro3/4(1).
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