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