Carter James F, Grundy Polly L, Hill Jenny C, Ronan Neil C, Titterton Emma L, Sleeman Richard
Mass Spec Analytical Ltd., Building 20F, Golf Course Lane, PO Box 77, Filton, Bristol, UK.
Analyst. 2004 Dec;129(12):1206-10. doi: 10.1039/b409341k. Epub 2004 Oct 11.
Pressure sensitive adhesive tape (brown parcel tape) is employed in a great many criminal activities such as the restraint of individuals during robbery and offences against the person, the enclosure of explosive devices and the packaging and concealment of controlled drugs. Packaging materials are ubiquitous in modern society and are produced in such vast quantities that it is increasingly difficult to distinguish between different products or to link materials to a common source. This study demonstrates the potential of stable isotope ratio mass spectrometry to characterise parcel tapes based on a number of properties. The carbon isotopic signature, derived from the substrate polymer, associated additives and adhesive is highly characteristic of a particular tape and allows samples from different sources to be readily distinguished. Further discrimination may be achieved by the incorporation of deuterium and oxygen isotopic data and by analysis of the isolated backing polymer. Recovery of intact tape from simulated forensic samples proved straightforward and the isotopic signature of the tape did not appear to be affected by adverse storage conditions.
压敏胶带（棕色包裹胶带）被用于许多犯罪活动，比如在抢劫和人身侵害犯罪中约束个人、封装爆炸装置以及包装和藏匿管制药品。包装材料在现代社会无处不在，产量巨大，以至于越来越难以区分不同产品或将材料与共同来源联系起来。本研究证明了稳定同位素比率质谱法基于多种特性对包裹胶带进行表征的潜力。源自基底聚合物、相关添加剂和粘合剂的碳同位素特征对于特定胶带具有高度特异性，能够轻易区分来自不同来源的样本。通过纳入氘和氧同位素数据以及对分离出的背衬聚合物进行分析，可以实现进一步的鉴别。从模拟法医样本中回收完整胶带证明很简单，而且胶带的同位素特征似乎不受不利储存条件的影响。
