Study Of Drug Analysis In Urine With Emulsion Liquid Membrane

Sample pre-treatment is one of the most important parts for forensic analysis of drug, it can provide strong evidence for prevent and combat crime. Along with the scientific progress and the modern analytical instruments development, the analytical method has a reliable guarantee for sensitivity and accuracy. Therefore, the bottleneck of the separation method is reliability, compatibility and selectivity, which restrict the development of analytical chemistry .Because of matrix complexity, the uncertainty and trace nature of the material in the body fluids being analyzed, the separation method of the reliability, compatibility, selectivity set higher requirements. Therefore, a good separation method is one of the necessary conditions for the correct identification conclusions. In order to explore more economical, efficient and rapid extraction method, the research include the application of emulsion liquid membrane in recent years, has explored to establish of a suitable extraction for abused drugs in urine which is economical, practical, harmless to human body, without enrichment and the pollution of the laboratory environment, the liquid membrane system can be recycle used and the corresponding extraction analysis method has been established.In this study, optimization of membrane and extraction conditions. Use the optimized extraction conditions to detect methamphetamine (MA), ketamine and morphine added in the urine. Measured the recovery rate in methamphetamine (MA), katamine and morphine by this method.The results shows that the extraction method has a strong effect on the extraction of purification and enrichment, be able to extract the trace methamphetamine (MA), ketamine and morphine of urine.