顶空气相色谱/质谱法分析大豆油中正己醛含量  

Determination of Hexanalin soybean Oil by headspace GC/MS

作　　者：张青龄 陈宜 黄建立 

机构地区：[1]福建省粮油质量监测所,福建福州350002

出　　处：《福建分析测试》2013年第6期14-16,共3页Fujian Analysis & Testing

基　　金：福建省科技计划重点项目(2011Y0007)

摘　　要：建立大豆油中正己醛含量的顶空气质分析方法。将大豆油试样放入密封的气化瓶中，在55℃温度下，使正己醛气化达到平衡时，取液上气体注入GC/MS，经非极性毛细管柱HP-5ms分离，质谱选择离子监测对正己醛进行定量测定。该方法在0.05～1.00μg/mL范围内线性关系良好，相关系数0.9997；最小检测限为3.15ng/mL，方法回收率在90.0～107%之间，相对标准偏差3.4%。该方法前处理简单、快速，定量准确，灵敏度高，可用于实验室检测大豆油中正己醛含量。A method for the determination of hexanal in soybean oil by headspace GC/MS was developed. Hexanal in soybean oil which sealed in a battle was Gasify to achieve a gasification balance at 55 ℃ temperature,than was been injected into the GC/MS,they were separated on a HP-5MS column and the hexanal was determined by GC/MS with Sim monitoring.The linear range of the method was 0.05-1.00μg/mL（r=0.9997）.The detection limit of hexanal was 3.15ng/mL. The recovery of hexanal was 90.0-107%,The RSD was 3.4%. It is a simple,rapid, accuracy and featuring high sensetivity method that could be applied in the lab.

关 键 词：大豆油 正己醛 顶空法 气相色谱 质谱 

分 类 号：O657.71[理学—分析化学]