摘要
建立了微波辅助萃取-气相色谱-质谱法（GC-MS）测定鞋材中苯乙酮含量的分析方法。考察了6种不同萃取溶剂对苯乙酮的萃取效率,最终选择丙酮为萃取溶剂,并研究了微波辅助萃取温度与时间对萃取效果的影响,选择了最佳的微波辅助萃取条件,萃取液经过净化和浓缩后,用气相色谱-质谱仪进行选择离子监测模式下的定性及定量分析。结果表明,苯乙酮在0.2~40 mg/L范围内呈线性关系,方法检出限为0.4 mg/kg,样品的加标回收率为92.4%~97.2%,相对标准偏差小于5.2%。该方法具有快速、方便、灵敏度高、定性准确等优点,适用于鞋材中苯乙酮含量的快速测定。
An effective method was established for the determination of acetophenone in shoes material by gas chromatography- mass spectrometry with microwave assisted extraction. By investigating the extraction efficiency of different extraction solvents for the acetophenone analytes, and selecting acetone as the extraction solvent, the condition of microwave assisted extraction temperature and time were optimized. The extract was purified and concentrated and injected into GC-MS, qualitative and quantitative analysis was conducted under selected ion monitoring （SIM） mode. The acetophenone concentration appeared linear relationship in the range of 0.2-40 mg/L, with the detection limit of 0.4 mg/kg. Recoveries are at the range of 92.4%-97.2% with relative standard deviation（RSD） below 5.2%. The experimental results demonstrate that this method developed is simple, rapid, sensitive and accurate, which could satisfy the demand for the analysis of acetophenone.
出处
《西部皮革》
2014年第20期33-36,40,共5页
West Leather
