烟用酊剂中挥发酸的GC/MS分析

Analysis of Volatile Organic Acids in Tinctures for the Use of Tobacco by GC/MS

采用加速溶剂萃取、N,O-双(三甲基硅烷基)三氟乙酰胺衍生化和气质联用选择离子、全扫描监测法分析了独活酊、咖啡酊、枣子酊、可可酊、甘草酊、灵香草酊、啤酒花酊、葫芦巴酊、树兰花酊、香荚兰酊中17种挥发性有机酸。结果表明:①方法的回收率在76.62%～107.60%,变异系数小于10.43%;②这些烟用酊剂样品中均含有甲酸、乙酸、丙酸、丁酸、戊酸、己酸、乳酸、2-呋喃甲酸、庚酸、苯甲酸、辛酸、壬酸、癸酸,且主要成分均是甲酸、乙酸、乳酸、2-呋喃甲酸、苯甲酸等,均不含3-甲基戊酸和4-甲基戊酸。此外,咖啡酊和可可酊中还含有少量2-甲基丁酸,葫芦巴酊、咖啡酊、可可酊、啤酒花酊、树兰花酊和枣子酊中还含有3-甲基丁酸,而且3-甲基丁酸也是啤酒花酊的主要酸性成分之一。

17 volatile organic acids in tinctures of Radix angelica Pubescens, coffee, date, cacao, licorice, ling vanilla, hop, fenugreek, Aglaia odorata, vanilla for the use of tobacco were determined. The samples were extracted with ASE, then derived with N, O -bis （trimethylsilyl） trifluoroacetamide, and determined by GC/MS under SIM ＆ SCAN modes. The results showed that： 1 ） the recoveries of the acids ranged from 76.62% to 107.60% with RSDs below 10.43% ; 2） formic, acetic, propanoic, butyric, pentanoic, hexanoic, lactic, 2 -furoic, heptanoic, benzoic, octanoic, nonanoic, and decanoic acids were found in all tincture samples, and the majority were formic, acetic, lactic, 2 -furoic, and benzoic acids, while neither 3 - methylvaleric acid nor 4 - methylvaleric acid was detected. Minor 2 - methylbutyric acid was identified in coffee and cacao tinctures,3 -methylbutyric acid was found in fenugreek, coffee, cacao,hop,Aglaia odorata, and date tinctures, which was one of the major acids in hop tincture.