LIU Gui-hua,SU Feng,LI Wei,et al.Determination of Migration of 9 Phenols in Food Contact Materials by High Performance Liquid Chromatography[J].Journal of Instrumental Analysis,2021,40(11):1619-1626.
LIU Gui-hua,SU Feng,LI Wei,et al.Determination of Migration of 9 Phenols in Food Contact Materials by High Performance Liquid Chromatography[J].Journal of Instrumental Analysis,2021,40(11):1619-1626. DOI: 10.19969/j.fxcsxb.21073011.
Determination of Migration of 9 Phenols in Food Contact Materials by High Performance Liquid Chromatography
A high performance liquid chromatographic(HPLC) method was established for the simultaneous determination of 9 phenols such as phenol,methyl-phenols and xylenols in food simulants. The sample was separated on an Agilent ZORBAX SB-Aq column by gradient elution,using methanol and water as mobile phase at a flow rate of 1.0 mL/min,and finally determined by fluorescence detection at an excitation wavelength of 214 nm and an emission wavelength of 315 nm.Meanwhile,the extraction method for 9 phenols in the fat-contained simulant was optimized,and the performances of the method including linearity,spiked recovery and precision were studied.Results demonstrated that 67% methanol aqueous solution was the best extraction solvent for the 9 phenols in fat simulants.The results also showed that there were good linear relationships for 9 phenols in all food simulants studied,with correlation coefficients(,r,2,) higher than 0.999.The recoveries for 9 phenols at 3 spiked levels in all food simulants ranged from 90.7% to 99.8%,with relative standard deviations (RSD) all below 6.0%.The limits of quantitation(LOQs) were in the ranges of 0.07-0.10 mg/L for aqueous simulants,and 0.15-0.20 mg/kg for fat simulants. This method was successfully applied to the migration determination of 9 phenols released from 11 plastics articles(PC) and 15 coatings intended to contact with food.The method was sensitive and accurate,and was suitable for the determination of 9 phenols in food simulants.
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