建立了食品包装纸中乙二醇单甲醚、乙二醇单乙醚、乙二醇、乙二醇乙醚乙酸酯和二乙二醇 5 种成分的同时快速测定方法。 样品用甲醇超声提取,提取液过滤膜后,采用气相色谱-质谱联用仪(GC-MS)在选择离子监测模式下进行分析,内标法定量,并对样品前处理条件及色谱质谱条件进行优化。 结果表明:5 种化合物在其质量浓度范围内呈良好线性关系,相关系数均大于 0. 999,方法检出限为 1. 52 ~ 2. 76 mg / kg;在低、中、高 3 个加标水平时,回收率为 84. 47% ~ 105. 01% ,日内、日间重复性的相对标准偏差(RSD)均小于 4% 。 该方法操作简便、快速、准确,可用于食品包装纸中 5 种成分的批量检测。

A gas chromatography-mass spectrometric (GC-MS) method was established for simultaneous determination of 2-methoxyethanol, 2-ethoxyethanol, glycol, 2-ethylene acetate and diglycol in food packaging paper. The samples were extracted with methanol assisted by ultrasound and filtered by 0. 22 滋m filter membrane. The target analytes were confirmed and quantified by GC-MS under selected ion monitor (SIM) mode with the internal standard method. The procedure of sample pretreatment and the instrument conditions were also optimized. The results showed that there are good linear relationships in the range for 5 compounds with correlation coefficients not less than 0. 999; the limits of detection of the above 5 compounds are range from 1. 52 mg / kg to 2. 76 mg / kg; the spiked recoveries at three levels are in the range of 84. 47% ~ 105. 01% , and the relative standard deviations (RSDs) of intra-day and inter-day re-peatability are less than 4% . The method is simple, rapid and accurate, and can be used for batch analysis of the 5 compounds in food packaging paper.