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| Simultaneous Determination of Specific Migration Amounts of 15 N-nitrosamines in Food Contact Materials and Products by Gas Chromatography－Thermal Energy Analyzer with Alcoholic Food Simulants |
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| DOI： |
| KeyWord:food contact materials and products N-nitrosamines alcoholic food simulants specific migration amounts gas chromatography－thermal energy analyzer（GC－TEA） |
| Author | Institution |
| LIN Rui，XU Dun-ming，HUANG Yi-jue，DONG Qing-mu，LAI Ying，YANG Zi-he，YANG Ze，ZHUANG Li-li，GUO Si-li，WU Yi-feng，LIN Wei-jing，LIN Hai-xia，DING Hua-jun，SHEN Lu-hong，TU Xing-peng |
Xiamen Customs District Technology Center，Xiamen ，China |
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| Abstract: |
| A gas chromatography－thermal energy analyzer（GC-TEA） method with alcoholic food simulants was established for the simultaneous determination on the migration amounts of 15 N-nitrosamines in food contact materials and products．The gas chromatographic conditions and pretreatment method（liquid－liquid extraction method） were optimized．Using 10% ethanol，20% ethanol and 50% ethanol as food simulants，the immersion solution was diluted，liquid－liquid extracted and concentrated，then separated on a DB－FFAP column，and finally detected by the thermal energy analyzer and quantified by the external standard method．Under the optimized experimental conditions，good baseline separation for 15 N-nitrosamines was achieved in the linear range of 0.025－0.5 mg/L，with correlation coefficients（r2） greater than 0.998．The limits of detection（LODs） and limits of quantitation（LOQs） were 0.200 μg/kg and 0.625 μg/kg，respectively．The spiked recoveries ranged from 85.7% to 106%，with relative standard deviations（RSDs） less than 10%．With the advantages of simple operation，good linear range，high sensitivity and accuracy，the method was suitable for the determination of 15 N-nitrosamines in food contact materials and products． |
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