顶空-气相色谱法测定食品接触材料中14种溶剂残留量

Determination of 14 kinds of solvent residues in food contact materials by headspace gas chromatography

中文关键词:  顶空-气相色谱法  食品接触材料  溶剂残留量

英文关键词:headspace gas chromatography  food contact materials  residual solvents

中文摘要:

      目的 建立顶空-气相色谱法测定食品接触材料中14种溶剂残留量的分析方法。方法 样品剪裁后, 装入20 mL顶空瓶中, 加入一定量的溶剂基质于顶空瓶中, 加盖密封, 混合均匀后, 于气相色谱仪测定。通过优化溶剂基质和体积、氮气和空气、样品面积和碎片大小等前处理条件, 实现了对14种溶剂残留量的常规、快速分析。结果 14种溶剂在0.01~6.40 mg/m2浓度范围内线性关系良好, 相关系数均大于0.9970, 方法检出限为0.01 mg/m2, 回收率为81.0%~113.0%, 相对标准偏差为0.3%~9.6%。结论 本方法适用于纸基食品接触材料和涂漆筷子等食品接触材料中溶剂残留量的检测, 可以为食品接触材料产品研究和提高企业产品质量提供依据。

英文摘要:

      Objective To establish a method for the determination of 14 residual solvents in food contact materials by headspace gas chromatography. Methods The samples were cut and put into a 20 mL headspace bottle. Then a certain amount of solvent matrix was added into the headspace bottle. After being sealed and mixed well, the samples were determined by gas chromatography. By optimizing the pretreatment conditions such as solvent matrix and volume, nitrogen and air, sample area and fragment size, the conventional and rapid analysis of 14 residual solvents was realized. Results This 14 solvents had good linear relationship within the concentration range of 0.01?6.40 mg/m2, and the correlation coefficients were all greater than 0.9970. The limits of detection were 0.01 mg/m2. The recoveries were 81.0%?113.0% and relative standard deviations were 0.3%?9.6%. Conclusion This method is suitable for the determination of residual solvents in paper-based food contact materials and painted chopsticks, which can provide basis for the research of food contact materials and the improvement of product quality.