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Preparation of ionic liquid‐modified magnetic nanoparticles based on thiol‐ene click chemistry for the analysis of polycyclic aromatic hydrocarbons in water and smoked meat samples
Author(s) -
Lu Junyu,
Lu Sufen,
Yao Dongmei,
Huang Xiuxiang,
Lai Hongfang,
Yin Xiuju
Publication year - 2019
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201800377
Subject(s) - chemistry , ionic liquid , desorption , click chemistry , thiol , detection limit , extraction (chemistry) , solid phase extraction , fourier transform infrared spectroscopy , bromide , adsorption , gas chromatography , chromatography , analytical chemistry (journal) , nuclear chemistry , organic chemistry , chemical engineering , catalysis , engineering
In the present study, ionic liquid (IL)‐modified Fe 3 O 4 magnetic nanoparticles (Fe 3 O 4 ) were synthesized by the thiol‐ene click reaction for magnetic solid‐phase extraction (MSPE) of polycyclic aromatic hydrocarbons (PAHs) in water and smoked meat samples. An IL 1‐vinyl‐3‐butylimidazolium bromide was firstly synthesized, and then immobilized on the surface of thiol group‐functionalized Fe 3 O 4 via a thiol‐ene click reaction. The as‐synthesized Fe 3 O 4 @ILs were characterized using Fourier transform infrared spectroscopy, X‐ray diffraction, and transmission electron microscopy. Various parameters (including the amount of adsorbent, extraction time, sample volume, and desorption conditions) affecting MSPE were optimized. Under the optimum conditions, the limits of detection of four PAHs in the range of 0.6–7.2 ng/L were obtained using high‐performance liquid chromatography–ultraviolet detection. The accuracy of the method was assessed by recovery measurements on spiked real samples and good recovery of 80–108% with relative standard deviations lower than 8.16% was achieved. The enrichment factors ranging from 699 to 858 were obtained for the analytes. This result indicated that the proposed method had great potential for sample preparation.