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    气相色谱法测定食品接触材料中的12种丙烯酸酯类单体在水性食品模拟物中的迁移量

    GC Determination of 12 Acrylate Monomers Amounts Migrated from Food Contact Materials to Aqueous Food Simulants

    • 摘要: 建立了气相色谱法测定食品接触材料中的12种丙烯酸酯类单体在10%(体积分数)乙醇溶液(A)、4%(体积分数)乙酸溶液(B)、20%(体积分数)乙醇溶液(C)、50%(体积分数)乙醇溶液(D)等4种水性食品模拟物中的特定迁移量的方法。食品模拟液经二氯甲烷旋涡振荡提取(A、B、C中加入氯化钠1.2 g,D中加入饱和硫酸钠溶液0.5 mL),用HP-VOC毛细管色谱柱进行分离,火焰离子化检测器检测。12种丙烯酸酯类单体的质量在2.5~50 μg内与其峰面积呈线性关系,检出限(3S/N)为0.05~2.0 μg。按标准加入法进行回收试验,测得回收率为84.0%~115%,测定值的相对标准偏差(n=6)为1.0%~9.6%。

       

      Abstract: A gas chromatography method was established for the determination of 12 acrylate monomers amounts migrated from food contact material to 4 kinds of aqueous food simulants, such as 10% (φ) ethanol solution (A), 4% (φ) acetic acid solution (B), 20% (φ) ethanol solution (C) and 50% (φ) ethanol solution (D). Food simulation solution was extracted by dichloromethane vortex oscillation, in which 1.2 g of sodium chloride was added to A, B and C, as well as 0.5 mL of saturated sodium sulfate solution to D. The extract was separated by HP-VOC capillary chromatographic column, and detected by flame ionization detector. Linear relationships between values of peak area and mass concentration of 12 acrylate monomers were found in the same range of 2.5-50 μg, with detection limits(3S/N) ranging from 0.05 to 2.0 μg. Tests for recovery were made by standard addition method, giving results in the range of 84.0%-115%, and RSDs (n=6) of the determined values were ranged from 1.0% to 9.6%.

       

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