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Affiliation of Author(s):化学与生命科学学院
Teaching and Research Group:食品教研室
Journal:Journal of Chromatography A
Funded by:其他课题
Key Words:Ionic liquid-based matrix solid-phase dispersion；Homogeneous liquid–liquid microextraction；Dyes；Condiments；High-performance liquid chromatography
Abstract:tThe ionic liquid-based matrix solid-phase dispersion homogeneous liquid–liquid microextraction (IL-based MSPD–HLLME) was developed and applied to the extraction of four banned dyes, includingchrysoidin, safranine O, auramine O and rhodamine B, in condiment samples. High performance liquidchromatography was applied to the separation and determination of the analytes. The solid sample wasdirectly treated by MSPD using ionic liquid as dispersant and the eluate obtained in MSPD was treatedby HLLME. Some experimental parameters, including type of dispersant, ratio of sample to dispersant,type and volume of ionic liquid, type and volume of elution solvent, pH value and ionic strength of theelution solvent, amount of ion-pairing agent (NH4PF6) and extraction time, were investigated and opti-mized. The linearities for determining the analytes were in the range of 60–2000 g kg−1for chrysoidin,40–2000 g kg−1for safranine O and 20–1000 g kg−1for auramine O and rhodamine B, with the corre-lation coefficients ranging from 0.9964 to 0.9991. The limits of detection for the analytes were between6.7 and 26.8 g kg−1and the limits of quantification were between 15.99 and 58.48 g kg−1. When thepresent method was applied to the analysis of spiked condiment samples, the recoveries of the analytesranged from 90.69 to 113.52% and relative standard deviations were lower than 8.2%. The present methodcombined the advantages of MSPD and HLLME, and could be applied for the determination of syntheticdyes in condiment samples.
Co-author:张丽媛,李娜,雷蕾,邵明媛,杨潇,宋颖,于爱民,张寒琦,邱芳萍
First Author:Zhibing Wang
Indexed by:Journal paper
Volume:1348
Page Number:2
Translation or Not:no
Date of Publication:2014-01-27