摘要
采用顶空液相微萃取法(HS-LPME)对8个不同批次及掺兑不同比例其他烟用香精香料的1148#样品的挥发性成分进行提取并用气相色谱法分析,同时研究了不同萃取溶剂、萃取时间、萃取温度对分析结果的影响,确定了最佳条件:样品在70℃下平衡1.0h,搅拌速度300r/min,以4.0μL正十二烷作萃取剂,萃取时间为10min,并通过主成分分析(PCA)法对不同批次及掺兑样品进行模式识别。结果表明:此法能成功地将掺兑样品区分开来,可以成为烟用香精香料1148#质量控制的有效手段之一。
Head space-liquid phase microextraction（HS-LPME） was used to extract the components of eight batches of tobacco flavor 1148# and the spiked samples with other tobacco flavor,and their components were analyzed by GC.Effects of different types of extraction solvent,extraction time and temperatures on the results were studied,and the optimal extracting conditions are selected as following： after balanced at 70 ℃ for 1 hour with the stirring rate at 300 r/min,the sample is extracted with 4.0 μL dodecane for 10 min.The pattern recognition of flavor samples was carried out with principal component analysis（PCA）.The research results shows that the established method can distinguish the spiked sample successfully,and it is an effective method for tobacco flavor 1148# quality control.
出处
《中国测试》
CAS
北大核心
2012年第1期48-51,共4页
China Measurement & Test
关键词
顶空-液相微萃取
气相色谱
指纹图谱
主成分分析
烟用香精
head space-liquid phase microextraction（HS-LPME）
gas chromatography
fingerprint
principal component analysis（PCA）
tobacco flavor
