Citation:
HUANG Yu-Feng, WEN Shao-Kai, WANG Li, XIAN Yan-Ping, ZHENG Kang, WANG Bin, LIANG Ming, WU Yu-Luan, HU Jun-Peng, CHEN Rong-Qiao. Determination of 12 Kinds of Antioxidants and Ultraviolet Absorbers in Plastic Packaging Baked Foods by QuEChERS Enhanced Matrix Removal-Lipid Combined with Ultra-high Performance Liquid Chromatography-Tandem Mass Spectrometry[J]. Chinese Journal of Analytical Chemistry,
;2020, 48(7): 937-945.
doi:
10.19756/j.issn.0253-3820.191506
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An effective method was developed for the simultaneous determination of 4 kinds of antioxidants and 8 kinds of the ultraviolet absorbers in plastic packaging baked foods by QuEChERS enhanced matix removal-lipid (EMR-Lipid) combined with ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). The samples were extracted by acetonitrile-acetone (1:1, V/V). The 12 targets were separated on a Waters BEH C18 column by gradient elution with methanol-10mmol/L ammonium acetate as mobile phase, ionized with positive and negative electrospray ionization (ESI+/-), detected under multiple reaction monitoring mode (MRM), and quantified with external standard method. The result showed that the 12 kinds of analytes presented favorable linearity in the respective linear range, with correlation coefficients (R2) of more than 0.9978. The method detection limits (S/N=3) were in the range of 5.0-10.0 μg/kg, except for the Antioxidant 2246 was 150.0 μg/kg. The average recoveries (n=6) ranged from 80.3% to 118.5%, with intra-day relative standard deviations (RSD, n=6) of 1.7%-9.8% and inter-day RSD (n=5) of 4.5%-9.9%. The developed method had simple pre-treatment procedure, satisfactory purification and sensitivity, and was suitable for the simultaneous determination of antioxidants and ultraviolet absorbers in plastic packaging baked foods.
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