Determination of polycyclic aromatic hydrocarbons in coffee and tea samples by magnetic solid-phase extraction coupled with HPLC-FLD

Food Chemistry
Yating ShiLiming Du

Abstract

This study reports the synthesis of a benign nano-adsorbent based on an ionic liquid of immobilized Fe3O4@3-(Trimethoxysilyl)propyl methacrylate@ionic liquid magnetic nanoparticles (Fe3O4@MPS@IL NPs). This material was applied to the magnetic solid phase extraction of seven heavy molecular weight polycyclic aromatic hydrocarbons (PAHs) from coffee and tea samples for high performance liquid chromatography coupled with fluorescence detection. The effects of various parameters of the analytical method were investigated, including pH, sorbent amount, desorption solvent, desorption volume, and extraction and desorption time. Under the optimized conditions, good linearities were obtained, with correlation coefficients (R(2)) between 0.9987 and 0.9998. The detection limits of the proposed method were in the range of 0.1-10ngL(-1). The spiked recoveries of the seven PAHs in coffee and tea samples ranged from 87.5% to 104.5%, with RSDs of less than 3.7%. In addition, a satisfactory reproducibility was achieved, with intra- and inter-day precisions with RSDs of less than 3.1% and 3.8%, respectively.

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Citations

Mar 17, 2017·Ecotoxicology and Environmental Safety·A S FernandesE R A Ferraz
Jun 24, 2017·Food Additives & Contaminants. Part B, Surveillance·Yun-Qi WenYu-Xiang Ma
Mar 19, 2020·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·B K K K JinadasaSimone Morais
Sep 20, 2020·Environmental Science and Pollution Research International·Aliakbar RoudbariMajid Arabameri
Dec 24, 2017·Journal of Separation Science·Juanjuan FengMin Sun
Jul 30, 2020·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Pinggu WuYongxin Zhao
Sep 12, 2017·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Jiangbo XiHaiyan Zhao

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