Determination of Migration of Chloropropanols from Food Contact Paper Products by GC-MS
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Abstract:
A method for simultaneous determination of 1,3-dichloro-2-propanol (1,3-DCP), 2,3-dichloro-1-propanol (2,3-DCP), 2-chloro-1,3-propanol (2-MCPD) and 3-chloro-1,2-propanol (3-MCPD) from food contact paper products was established by using gas chromatography-mass spectrometry (GC-MS). 4% acetic acid, 10% ethanol, 50% ethanol and olive oil were selected as food simulants according to GB standard. The method was optimized in this study, the limit of detection (LOD) and limit of quantitation (LOQ) for each chloropropanols were 2 μg/kg and 10 μg/kg, respectively. The spiked recoveries were 87.3%~109%, and the relative standard deviations were 1.1% ~ 9.5% (n=6). The method is demonstrated to be suitable for determination of migration of chloropropanols from food contact paper with well accuracy and reproducibility. The method was applied to detection of 15 food contact papers, the highest value for both detection frequency and migration was observed for 3-MCPD. The detection frequency of 1,3-DCP and 3-MCPD were 33.3% and 53.3%, respectively ,and the migration level was 2.27~12.04 μg/kg and 2.51~183.32 μg/kg, respectively, while both migration of 2,3-DCP and 2-MCPD were not detected. It was also found that the migration of chloropropanols in the aqueous simulants was higher than that in olive oil. In view of the high detection frequency of 1,3-DCP and 3-MCPD, more attention should be paid to the risk caused by the migration of chloropropane in food contact paper.
