摘要
建立复合食品包装袋中二氨基甲苯的气相色谱和气相色谱-质谱联用测定方法。样品用沸水浸泡,在碱性条件下乙酸乙酯萃取,三氟乙酸酐衍生后用DB-1701石英毛细管柱分离,气相色谱和气质联用检测。二氨基甲苯含量在0.002~0.040mg/L呈现良好的线性关系,相关系数0.9997。本方法的最低检出限为0.001mg/L。在空白的浸泡水样中分别添加0.004mg/L和0.020mg/L两个水平的二氨基甲苯标准溶液,平均回收率为94%,相对标准偏差3.8%~5.5%。方法快速、灵敏、准确,满足复合食品包装袋中二氨基甲苯的日常检验需要。
A gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) method has been established for the determination of 2,4-diaminotoluene in laminated food packaging bags. The samples were soaked by boiling water and the soaked solution was extracted by ethyl acetate. Finally, 2,4-diaminotoluene in ethyl acetate was derived with trifluoro-acetic anhydride and the derivative was separated by DB-1701 capillary column and analyzed by GC and GC-MS. The calibration curve of 2,4-diaminotoluene was linear in the range of 0.002-0.040 mg/L. The limit of detection was 0.001 mg/L. The average recovery rate of 2,4-diaminotoluene at the spiked level of 0.004 mg/L and 0.020 mg/L was 94% with the relative standard deviation of 3.8%-5.5%. The developed method was fast, sensitive and accurate, and was suitable for the determination of 2,4-diaminotoluene in laminated food packaging bags.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2013年第8期240-243,共4页
Food Science
关键词
二氨基甲苯
复合食品包装袋
气相色谱
气相色谱-质谱联用
2,4-diaminotoluene
laminated food packaging bags
gas chromatography
gas chromatography-mass spectrometry