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目的:探讨液相微萃取技术在毒物分析中的实际应用方法和效果。方法:本文首先分析了液相微萃取过程中萃取溶剂、萃取时间以及萃取振荡速度等因素对液相微萃取过程及结果的影响,最终得到最优的实验条件。具体要素为以三氯甲烷为萃取剂,萃取时间为25分钟,萃取振荡速度为200r/min。在此基础上对人体尿液中三唑仑的成分进行检验。结果:以以上要素对人体尿液中的三唑仑进行检验,三唑仑的回收率在88.0%-90.0%之间。结论:采用液相微萃取技术分析尿液中的三唑仑,操作简单,对有机溶剂的需求小,结果快速准确,因此可知液相微萃取用于毒物分析具有良好实际应用效果。
Objective: To explore the practical application methods and effects of liquid phase microextraction in toxicant analysis. Methods: In this paper, the effects of extraction solvent, extraction time, extraction oscillation speed and other factors on the liquid-phase microextraction process and results during the liquid-phase microextraction were analyzed. Finally, the optimal experimental conditions were obtained. Specific elements to chloroform as extractant, extraction time of 25 minutes, the extraction oscillation speed of 200r / min. On this basis, the composition of triazolam in human urine test. Results: Triazolam in human urine was tested with the above factors. The recovery of triazolam was between 88.0% and 90.0%. Conclusion: Liquid phase microextraction of triazolam in urine is simple and easy to operate. The demand for organic solvents is small and the results are fast and accurate. Therefore, liquid microextraction for the analysis of toxicants has a good practical application effect.