期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1581, 期 -, 页码 168-172出版社
ELSEVIER
DOI: 10.1016/j.chroma.2018.11.008
关键词
Magnetic ionic liquids; Pesticide residues; Matrix solid-phase dispersion; HPLC-DAD
资金
- Chemical Measurement and Imaging Program at the National Science Foundation [CHE-1709372]
In this study, we propose, for the first time, the direct use of a magnetic ionic liquid (MIL) in a matrix solid-phase extraction procedure. Because of the magnetic properties, the MIL can be harvested directly after the extraction step, using a magnet, while its hydrophobic nature makes feasible the extraction of analytes. Raw vegetables of high water content can be analyzed without any pretreatment. The viscous nature of the selected MIL assists in blending with the matrix, while its hydrophobicity facilitates easier separation and retrieval. Additionally, no solid dispersing materials or co-sorbents are needed. A simple, low-cost analytical method for the determination of multi-class pesticides residues in raw vegetables was developed, with satisfactory recoveries. (C) 2018 Elsevier B.V. All rights reserved.
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