1-Octyl-3-methylimidazolium hexafluorophosphate-functionalised magnetic poly β-cyclodextrin for magnetic solid-phase extraction ofpyrethroids from tea infusions
| Autor: | Zikai Liu, Runhua Lu, Qinqin Xu, Wenfeng Zhou, Chen Yan |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Insecticides Sorbent 1-octyl-3-methylimidazolium hexafluorophosphate Tea Cyclodextrin Health Toxicology and Mutagenesis Solid Phase Extraction beta-Cyclodextrins Imidazoles Public Health Environmental and Occupational Health Reproducibility of Results Food Contamination General Chemistry General Medicine Toxicology Magnetics chemistry.chemical_compound chemistry Hexafluorophosphate Pyrethrins Solid phase extraction Food Science Nuclear chemistry |
| Zdroj: | Food Additives & Contaminants: Part A. 38:1743-1754 |
| ISSN: | 1944-0057 1944-0049 |
| Popis: | In this study, a novel sorbent, 1-octyl-3-methylimidazolium hexafluorophosphate functionalised magnetic poly β-cyclodextrin, was successfully synthesised and applied to magnetic solid-phase extraction for the determination of pyrethroids in tea infusions. The sorbent was characterised by transmission electron microscopy, energy-dispersive spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, vibrating sample magnetometer and Brunauer–Emmett–Teller measurement. All factors affecting extraction efficiency, such as sorbent amount, extraction time, ionic strength and desorption conditions, were optimised individually. Under the chosen conditions, wide linearity (2.5–500 μg L−1) with determination coefficients ranging from 0.9995 to 0.9999, low limits of detection of 0.32–0.54 μg L−1 and good precision (intra-day: 2.6–7.0%; inter-day: 3.5–7.6%) were achieved for four pyrethroids in tea infusions. The relative recoveries of target analytes in real tea infusion samples were from 70% to 101% with relative standard deviations lower than 9.1%. We conclude that the proposed method is promising in the detection of pyrethroids in tea infusions. |
| Databáze: | OpenAIRE |
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