摘要
本文研究了液相微萃取-气相色谱法在检测水中芥子气方面的应用.考查了萃取溶剂、萃取时间、盐效应对萃取的影响.优化了萃取条件：萃取溶剂为1μL甲苯,萃取时间25min,搅拌速度170r·min^-1.方法的线性范围0.07～3.70mg·L^-1,最小检出限0.06mg·L^-1,方法精密度6.6%.富集倍数为44～54;回收率在1.45%～1.8%之间.实验表明,该方法简便、灵敏、消耗有机溶剂少,可以用于水中芥子气的富集检测.
The application of liquid - phase micro - extraction and gas chromatography on the determination of mustard gas in water was studied.Extraction solvent, extraction time, and salt density were optimlzed. Optimal experimental conditions were as follows： 1μL, of toluene as the extraction solvent, 25min of extraction time, and 170r·min^-1 of stirring speed.The linear range was from 0.07 to 3.7mg·L^-1, the detection limit was 0.05mg·L^-1, and the relative standard deviation was lower than 6.6% .The concentration factor was between 44 and 54.Recovery of was 1.45% - 1.8%. Results indicated possibility of applying LPME in analysis of mustard gas dissolved in water attributed to of the convenience, sensitivity low cost of the method.
出处
《化学工程师》
CAS
2006年第8期30-32,共3页
Chemical Engineer
关键词
液相微萃取
气相色谱
芥子气
liquid - phase micro - extraction
gas chromatography
mustard gas
