GC-MS Determination of Migration of Phthalate in Olive Oil from Food Contact Materials and Products by Gas Chromatography-Mass Spectrometry
Simultaneous quantitative analytical method for determination of migration amount of 19 kinds of Phthalate in oily simulants of food contact materials and products by gas chromatography-mass spectrometry.Acetonitrile is used to extract the Phthalate migrated to the oily simulant,and then the solid phase extraction column with PSA Silica mixed packing is used for purification.Finally,gas chromatography-mass spectrometry is used for determination.The detection limits of 17 phthalate methods can reach 0.01 mg·kg-1,and the detec-tion limits of DINP and DIDP can reach 0.1 mg·kg-1.The correlation coefficients of the targets reached more than 0.997 in the in the range of 0.20-20.0 mg·kg-1 for DINP and in the linear range of 0.02-2.00 mg·kg-1 for the other 18 targets.Three levels of 0.02,0.1,and 1.0 mg·kg-1 were added to the food simulant test solution and six replicates of the experiment were performed,which showed recoveries ranging from 88.8％to 99.7％,with RSDs ranging from 0.7％to 6.9％at the same level.Inter-laboratory validation results show that the opti-mized method has good repeatability and reproducibility.This method is accurate,efficient and simple,and can be used to detect the migration of Phthalate esters in oil-based simulants.
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