前处理方法对食品包装2,6二叔丁基苯酚 检测的影响

Effect of pretreatment method on detection of butylated hydroxytoluene in food plastic packaging materials

中文关键词:  塑料包装  污染物  2,6二叔丁基苯酚  纯化

英文关键词:plastic packaging  contaminant  butylated hydroxytoluene  purification

中文摘要:

      目的 研究前处理方法对食品包装中2,6二叔丁基苯酚(BHT)检测的影响。方法 塑料包装材料经正己烷超声辅助萃取后, 将提取液在－10 ℃条件下放置2 d, 萃取液离心, 将上清液旋转蒸发浓缩, 最后用GC-MS测定。结果 GC-MS分析总离子流图中BHT峰形干净、杂质峰值明显减少。结论 该前处理方法能明显改善分离效果。

英文摘要:

      Objective To study the effect of pretreatment method on detection of butylated hydroxytoluene (BHT) in food plastic packaging materials. Methods Samples were extracted with hexane under ultrasound -assisted extraction, stored for 2 d under ?10 ℃, and analyzed by GC-MS after centrifugation and concentration. Results Total ion chromatograms of BHT GC-MS peak shaped clean and impurity peak was significantly reduced. Conclusion The pre-treatment method could significantly improve the separation efficiency.