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A fluorinated chitosan‐based QuEChERS method for simultaneous determination of 20 organophosphorus pesticide residues in ginseng using GC–MS/MS by Yunheng Yao; Longlv Bai; Haifeng Tian; Xinzi Wu; Nianjie Zhang; Lunpeng Wu; Yifan Jia; Xiuli Ren is a Chemistry article available to read on EtoBox.

## Abstract In this study, a new fluorinated methacrylamide (MACF) was synthesized and evaluated as an adsorbent in the dispersive solid‐phase extraction for the effective determination and extraction of 20 organophosphorus pesticides (OPPs) from ginseng samples using the QuEChERS (quick, easy, cheap, effective, rugged, safe) method coupled with GC–MS/MS. The properties of MACF were characterized using Fourier‐transform infrared spectroscopy, elemental analysis, and high‐resolution ^19^F NMR. MACF, chitosan, primary and secondary amine, octadecylsilane, graphitized carbon black, Z‐Sep, Z‐Sep^+^, and EMR‐Lipid were compared in terms of extraction efficiency. The best results were obtained when MACF was used. Matrix‐matched calibration was employed for quantification. All the OPPs exhibited good linearity (r^2^ > 0.9969) with the concentration at their respective concentration ranges. The limits of detection were 1.5–3.0 μg/kg, and the limits of quantification were 5.0–10.0 μg/kg. The trueness of the 20 pesticides at four spiked levels ranged from 86.1 to 111.1%, and the relative standard deviation was less than 11.3%. The modified QuEChERS method using MACF as the adsorbent was sens

Author

Yunheng Yao; Longlv Bai; Haifeng Tian; Xinzi Wu; Nianjie Zhang; Lunpeng Wu; Yifan Jia; Xiuli Ren

Publisher

Wiley

Published

2021

Language

EN

Field

Chemistry (Physical Sciences)