The establishment of a highly sensitive method in detecting ketamine and norketamine simultaneously in human hairs by HPLC-Chip-MS/MS
| Autor: | Zack C.F. Wong, Kevin Y. Zhu, Karl Wah Keung Tsim, Roy Chi Yan Choi, David T W Lau, K. Wing Leung, Tina T. X. Dong, Annie K.L. Ting, Qiang Fu, Winki Y.Y. Ng, Tiejie Wang |
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| Rok vydání: | 2010 |
| Předmět: |
Metabolite
Pharmacology Mass spectrometry High-performance liquid chromatography Gas Chromatography-Mass Spectrometry Pathology and Forensic Medicine Specimen Handling chemistry.chemical_compound Forensic Toxicology Limit of Detection medicine Humans Ketamine Detection limit Chromatography Molecular Structure Chemistry Hair analysis Forensic toxicology Standard curve Substance Abuse Detection Law Excitatory Amino Acid Antagonists medicine.drug Hair |
| Zdroj: | Forensic science international. 208(1-3) |
| ISSN: | 1872-6283 |
| Popis: | An effective way to reveal the history of drug abuse is to determine the parental drug and its metabolites in hair. Here, a quantitative HPLC-Chip-MS/MS method was developed for simultaneous measurement of ketamine and its metabolite norketamine in human hair. Ketamine and norketamine were extracted from hair by acid hydrolysis, and then enriched by organic solvent extraction. The chromatographic separation was achieved in 15 min, with the drug identification and quantification by a tandem mass spectrometer. The linear regression analysis was calibrated by deuterated internal standards with a R(2) of over 0.996. The limit of detection (LOD) and the limit of quantification (LOQ) for ketamine and norketamine were 0.5 and 1 pg/mg of hair, respectively. The standard curves were linear from the value of LOQ up to 100 pg/mg of hair. The validation parameters including selectivity, accuracy, precision, stability and matrix effect were also determined. In conclusion, this method was able to reveal the present of ketamine and norketamine with less hair from the drug abusers, and which had the sensitivity of ∼1000-fold higher than the conventional method. In addition, the amount of ketamine and norketamine being detected in different hair segments would be useful in revealing the historical record of ketamine uptake in the drug abusers. |
| Databáze: | OpenAIRE |
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