Morelato Marie, Beavis Alison, Tahtouh Mark, Ribaux Olivier, Kirkbride K Paul, Roux Claude
Centre for Forensic Science, University of Technology, Sydney, Broadway, NSW, Australia.
Forensics, Australian Federal Police, Sydney, NSW, Australia.
Forensic Sci Int. 2015 Jan;246:55-64. doi: 10.1016/j.forsciint.2014.10.041. Epub 2014 Nov 4.
This study focuses on methylamphetamine (MA) seizures made by the Australian Federal Police (AFP) to investigate the use of chemical profiling in an intelligence perspective. Correlation coefficients were used to obtain a similarity degree between a population of linked samples and a population of unlinked samples. Although it was demonstrated that a general framework can be followed for the use of any forensic case data in an intelligence-led perspective, threshold values have to be re-evaluated for each type of illicit drug investigated. Unlike the results obtained in a previous study on 3,4-methylenedioxymethylamphetamine (MDMA) seizures, chemical profiles of MA samples coming from the same seizure showed relative inhomogeneity, limiting their ability to link seizures. Different hypotheses were investigated to obtain a better understanding of this inhomogeneity although no trend was observed. These findings raise an interesting discussion in regards to the homogeneity and representativeness of illicit drug seizures (for intelligence purposes). Further, it also provides some grounds to discuss the initial hypotheses and assumptions that most forensic science studies are based on.
本研究聚焦于澳大利亚联邦警察（AFP）查获的甲基苯丙胺（MA），从情报角度调查化学特征分析的应用。使用相关系数来获取一组关联样本与一组非关联样本之间的相似度。尽管已证明从情报主导的角度出发，使用任何法医案件数据都可遵循一个通用框架，但对于所调查的每种非法药物，阈值都必须重新评估。与先前一项关于3,4 - 亚甲基二氧甲基苯丙胺（MDMA）查获情况的研究结果不同，来自同一查获批次的MA样本的化学特征显示出相对的不均匀性，限制了它们将不同查获批次联系起来的能力。为了更好地理解这种不均匀性，研究了不同的假设，尽管未观察到任何趋势。这些发现引发了关于非法药物查获（出于情报目的）的同质性和代表性的有趣讨论。此外，这也为讨论大多数法医学研究所基于的初始假设提供了一些依据。
