摘要
建立一种适用于食品包装材料中常见的19种挥发性有机物(醇类、酯类、苯系物等)含量的顶空-气相色谱检测方法,同时研究不同色谱柱、不同的顶空平衡温度与时间对分离检测的影响。研究结果表明:平衡温度在110℃、平衡时间15min时,选用DB-WAX(30m×0.32mm,0.25μm)毛细管色谱柱,上述19种挥发性有机物能很好地分离;该法在含量0.001～10mg/m2范围内线性关系良好,19种挥发性有机物的相关系数均大于0.998,加标回收率为90.3%～105.9%,样品相对标准偏差(RSD)为1.6%～5.0%,最低检出限为0.001mg/m2。该方法简单、快速、准确、灵敏度高,完全能够满足食品包装材料中挥发性有机物定量的分析。
An analytical method was developed for the determination of 19 volatile organic compounds extracted from food packages by head-space gas chromatography.The effects of chromatographic column,equilibrium temperatures and equilibrium times on the determination of residual organic solvents were studied.The optimal gas chromatographic parameters were as follows：chromatographic column was DB-WAX capillary column（30 m×0.32 mm,0.25 μm）was chosen as the capillary chromatograph,and the optimization of equilibrium temperatures and times parameters were 110 ℃ and 15 min,respectively.The results showed that 19 organic residues were separated well,the standard curves were linear in the range of 0.001～10 mg/m 2（R0.998）,the recoveries were 90.3%～105.9% with RSD in the range of 1.6%～5.0%,and the limits of detection（S/N=10） were 0.001 mg/m 2.
出处
《食品科技》
CAS
北大核心
2013年第2期291-295,共5页
Food Science and Technology
关键词
顶空-气相色谱法
挥发性有机物
食品包装材料
head-space gas chromatography
volatile organic compounds
food packing materials
