Buchanan Hilary A S, Daéid Niamh Nic, Meier-Augenstein Wolfram, Kemp Helen F, Kerr William J, Middleditch Michael
Centre for Forensic Science, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow.
Anal Chem. 2008 May 1;80(9):3350-6. doi: 10.1021/ac702559s. Epub 2008 Mar 21.
Drug profiling, or the ability to link batches of illicit drugs to a common source or synthetic route, has long been a goal of law enforcement agencies. Research in the past decade has explored drug profiling with isotope ratio mass spectrometry (IRMS). This type of research can be limited by the use of substances seized by police, of which the provenance is unknown. Fortunately, however, some studies in recent years have been carried out on drugs synthesized in-house and therefore of known history. In this study, 18 MDMA samples were synthesized in-house from aliquots of the same precursor by three common reductive amination routes and analyzed for 13C, 15N, and 2H isotope abundance using IRMS. For these three preparative methods, results indicate that 2H isotope abundance data is necessary for discrimination by synthetic route. Furthermore, hierarchical cluster analysis using 2H data on its own or combined with 13C and/or 15N provides a statistical means for accurate discrimination by synthetic route.
毒品溯源分析，即把多批次非法药物与共同来源或合成途径相联系的能力，长期以来一直是执法机构的目标。过去十年间的研究探索了利用同位素比率质谱法（IRMS）进行毒品溯源分析。这类研究可能会因使用警方查获的来源不明的物质而受到限制。然而，幸运的是，近年来一些研究是针对在实验室内部合成因而来源已知的毒品开展的。在本研究中，通过三种常见的还原胺化途径，用同一前体的等分试样在实验室内部合成了18个摇头丸样本，并使用IRMS分析了其碳-13、氮-15和氢-2同位素丰度。对于这三种制备方法，结果表明氢-2同位素丰度数据对于按合成途径进行区分是必要的。此外，单独使用氢-2数据或结合碳-13和/或氮-15数据进行层次聚类分析，提供了一种按合成途径进行准确区分的统计方法。
