DMCHA提取油脂中溶剂残留量的气相色谱分析研究  

Gas chromatography analysis of residual solvent in DMCHA extracted oil

作　　者：曾山晋 何菁萍[1] 鲁厚芳[1,2] 刘颖颖[2] 梁斌[1,2] 

机构地区：[1]四川大学化学工程学院,成都610065 [2]四川大学新能源与低碳技术研究院,成都610065

出　　处：《中国油脂》2015年第9期77-80,共4页China Oils and Fats

基　　金：教育部博士点基金优先发展领域(20130181130006);自然科学基金面上项目(21476150)

摘　　要：利用转极性溶剂提取油脂可减少环境污染、降低分离能耗。建立了转极性溶剂N,N-二甲基环己胺（DMCHA）在提取的麻疯树籽油中残留量的气相色谱分析方法。该方法采用安捷伦GC7890A气相色谱仪,FID检测器,DB-5HT毛细管柱,DMCHA与麻疯树籽油能实现良好分离,分析时间为14.3 min。DMCHA在0.4~2.0 g/L范围内,与峰面积存在良好的线性相关性,相关性系数为0.993,精密度实验中相对标准偏差为3.87%,加标回收率在99.18%~104.02%之间。该方法能够快速准确测定DMCHA提取的麻疯树籽油中溶剂残留量。：Using switchable polarity solvents to extract oil can reduce environmental pollution and separa- tion energy. N, N -dimethyl cyclohexylamine （DMCHA）, as a typical switchable solvent, was used to extract Jatropha curcas L. seed oil. The gas chromatography analysis method for analyzing the residual solvent in Jatropha curcas L. seed oil was established. The DMCHA content was determined by Agilent GC7890 gas chromatography equipped with a flame ionization detector and a capillary column DB -5HT. The results showed that the residual DMCHA in Jatropha curcas L. seed oil could be well separated from the oil and the analysis time was 14.3 min. The DMCHA content had good linear relationship with its peak area in the range of 0.4- 2.0 g/L（R2 = 0.993 ）. The relative standard deviation in the precision experiment and the recovery of standard addition were 3.87% and 99.18% - 104.02% , respectively. This method could be used to rapidly and accurately determine the residual solvent in Jatropha curcas L. seed oil extracted by DMCHA.

关 键 词：麻疯树籽油 DMCHA 转极性溶剂 残留量 气相色谱 

分 类 号：O657.71[理学—分析化学] TQ646[理学—化学]