摘要
目的研究气-质联用法测定复合食品包装膜袋中的2,4-二氨基甲苯,并调查潮州市部分食品包装企业生产的复合食品包装膜袋中2,4-二氨基甲苯的含量。方法样品在100℃下用水浸泡,浸泡液经甲苯提取、三氟乙酸酐衍生化后将衍生物进行气-质联用分析。结果 2,4-二（三氟乙酰氨基）甲苯定量离子的峰面积和二氨基甲苯的质量浓度有线性关系,范围为1～100μg/L,相关系数达0.9994,检出限为0.2μg/L,回收率为89.0%～95.2%,RSD值为1.80%～4.70%。调查结果显示,30个样品中有5个样品检出2,4-二氨基甲苯,质量浓度在1.1～6.4μg/L,其中1个样品中的2,4-二氨基甲苯质量浓度达到6.4μg/L,超出标准限量要求（小于4μg/L）。30个样品的合格率达到96.7%,表明辖区内该类产品中2,4-二氨基甲苯的含量状况基本良好。结论气-质联用方法检出限低,回收率高,结果准确可靠。
It aims to study the determination of 2,4-diaminotoluene in composite food packaging film bags by gas chromatography-mass spectrometry（GC-MS）, and investigate the concentration of 2,4-diaminotoluene in food packages in Chaozhou. Samples were immersed with water at 100 ℃, then the immersion liquid was extracted with methylbenzene and derivatized with trifluoro-acetic anhydride. Finally, its derivative was analyzed by GC-MS. There was linear relation between the peak area of the quantitative ion and the concentration of 2,4-diaminotoluene in range of 1~100 μg/L. The limit of detection was 0.2 μg/L and the correlation coefficient was up to 0.9994. Recovery was 89.0%~95.2%, RSD was 1.80%~4.70%. The investigation results indicated that 5 of the 30 samples contained 1.1~6.4 μg/L 2,4-diaminotoluene, and one of them reached 6.4 μg/L, exceeding the standard limit（less than 4 μg/L）. The qualified rate of the 30 samples reached 96.7 %. That indicated the content of 2,4-diaminotoluene in food packaging material was basically good. In co nclusion, the gas chromatography-mass spectrometry（GC-MS） method is featured by low limit of detection, high recovery rate, and accurate and reliable results.
出处
《包装工程》
CAS
CSCD
北大核心
2016年第15期102-106,共5页
Packaging Engineering
基金
潮州市科技引导计划(2014G01)
关键词
气相色谱-质谱法
2
4-二氨基甲苯
复合食品包装膜袋
gas chromatography-mass spectrometry
2
4-diaminotoluene
composite food packaging film bag
