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Preparation and characterization of magnetic molecular imprinted polymers with ionic liquid for the extraction of carbaryl in food.
- Source :
- Analytical & Bioanalytical Chemistry; Feb2020, Vol. 412 Issue 5, p1049-1062, 14p
- Publication Year :
- 2020
-
Abstract
- Magnetic molecular imprinted polymers with ionic liquid used as an auxiliary solvent (IL@MMIPs) for the recognition of the methyl carbamate pesticide carbaryl (CBR) in foodstuff have been synthesized. The properties and application of IL@MMIPs were determined. The kinetic and isotherm adsorption processes were found to follow the pseudo-second-order and the Scatchard models, respectively. The selective experiment showed that the IL@MMIPs exhibited good selectivity to CBR compared to magnetic nonimprinted polymers with IL (IL@MNIPs). By using the IL@MMIPs as an adsorbent for the enrichment of CBR in food samples, the limit of detection (LOD, S/N = 3) and the limit of quantitation (LOQ, S/N = 10) of this method were 3 μg kg<superscript>−1</superscript> and 10 μg kg<superscript>−1</superscript>, respectively. Compared with the traditional method, the IL@MMIP method has better recoveries (83.23–99.83%), precision (1.12–2.09%), and stabilization (intraday, 1.08–2.81%; interday, 2.26–3.30%). IL@MMIPs are an ideal adsorbent that could be applied to conveniently detect CBR in complex food, and the proposed method can be considered as a selective and sensitive alternative to traditional methods with affordable cost, avoiding the complex pretreatment procedure. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16182642
- Volume :
- 412
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- Analytical & Bioanalytical Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 141597576
- Full Text :
- https://doi.org/10.1007/s00216-019-02330-y