气相色谱-质谱法检测塑料食品包装材料中的五种挥发性有机物
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摘要
建立了使用气相色谱-质谱仪检测塑料食品包装材料中常见的5种挥发性有机物(苯、甲苯、乙酸乙酯、乙酸丁酯、丁酮)的分析方法.实验中以欧盟标准EU 10/2011限定的4种模拟液为提取介质,二氯甲烷为有机萃取溶剂,对样品的前处理、色谱分离条件和质谱检测条件进行了优化.在最优化的实验条件下,这5种有机物能够完全分离,且在0.5~20.0mg/L浓度范围内线性较好,相关系数大于0.999 7,仪器精密度的相对标准偏差为1.08%~2.52%之间,样品在不同模拟液中的加标回收率介于81%~118%之间,最低检出限可达0.02 mg/m2.使用该方法测定了5种不同用途的塑料包装材料中的溶剂残留量,方法简便、快速、重现性好,完全能满足塑料包装材料中溶剂残留量的分析.
A procedure was developed to determinate 5common volatile organic compounds(VOCs)(benzene,toluene,ethyl acetate,butyl acetate,butanone)in plastics food packaging materials by GC-MS method.According to EU 10/2011,4kinds of extraction media and organic solvent dichloromethane were used in the experiment,based on which the pretreatment of the sample,chromatograph separation condition and mass condition were optimized.Under the optimized experimental conditions,the 5VOCs were separated completely.In the range of 0.50-20.0 mg/L,the results showed good linearity,with a correlation coefficient better than0.999 7.The relative standard deviation of instrument were between 1.08%-2.52%,the recovery of sample in different media between 81%-118%,with the detection limit being 0.02mg/m2.5kinds of plastics materials were analyzed.This method is simple,rapid,accurate and could be applied for determining the solvent residues in the plastic packing materials.
A procedure was developed to determinate 5common volatile organic compounds(VOCs)(benzene,toluene,ethyl acetate,butyl acetate,butanone)in plastics food packaging materials by GC-MS method.According to EU 10/2011,4kinds of extraction media and organic solvent dichloromethane were used in the experiment,based on which the pretreatment of the sample,chromatograph separation condition and mass condition were optimized.Under the optimized experimental conditions,the 5VOCs were separated completely.In the range of 0.50-20.0 mg/L,the results showed good linearity,with a correlation coefficient better than0.999 7.The relative standard deviation of instrument were between 1.08%-2.52%,the recovery of sample in different media between 81%-118%,with the detection limit being 0.02mg/m2.5kinds of plastics materials were analyzed.This method is simple,rapid,accurate and could be applied for determining the solvent residues in the plastic packing materials.
引文
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[9]刘莹峰,翟翠萍,李丹,等.吹扫捕集-GC/MS/SIM法测定食品接触材料的单体迁移量[J].质谱学报,2009,30(增刊):174-176.
[10]魏黎明,李菊白,李辰.固相微萃取-气相色谱法测定塑料食品包装袋中的痕量挥发性有机物[J].分析测试技术与仪器,2003,9(3):178-181.
[2]李伟,许华,常宇文,等.顶空气相色谱法同时测定塑料食品包装袋中11种有机溶剂残留量[J].化学试剂,2007,29(8):481-482.
[3]陈艳彬,周围.顶空气相色谱法测定塑料食品包装袋中6种苯系物残留量[J].食品科技,2008,33(12):298-300.
[4]郑景峰,林晨,陈燕华.顶空气相色谱法同时测定药品包装用复合膜中7种有机溶剂残留量[J].海峡药学,2009,21(12):62-64.
[5]徐宁.顶空气相色谱法测定纸类印刷品中16种挥发性有机物[J].广东化工,2010,37(7):99-101.
[6]陈自力,王瑾,陈小珍,等.顶空气相色谱法同时测定食品包装复合膜中13种有机溶剂残留[J].理化检验-化学分册,2010,46(8):911-913.
[7]谢利,于江,任鹏刚,等.顶空气相色谱-质谱法分析方便面印刷包装材料中挥发性有机物[J].分析化学,2011,39(9):1368-1372.
[8]柯颖芬,冯建跃,陈关喜,等.吹扫捕集气相色谱法测定卷烟包装卡纸中苯系物残留[J].理化检验-化学分册,2006,42(7):509-511.
[9]刘莹峰,翟翠萍,李丹,等.吹扫捕集-GC/MS/SIM法测定食品接触材料的单体迁移量[J].质谱学报,2009,30(增刊):174-176.
[10]魏黎明,李菊白,李辰.固相微萃取-气相色谱法测定塑料食品包装袋中的痕量挥发性有机物[J].分析测试技术与仪器,2003,9(3):178-181.