EXP-SA: Method Development for Stable Isotope Characterization of High Explosives

这项工作将制定高精度质谱学和相关技术的实验室间标准和改进方法，以帮助对爆炸后残留物进行法医检验。该项目将有助于克服烈性炸药稳定同位素法医鉴定中的两个基本障碍，即需要校准实验室间标准(特别是氧同位素分析)，以及需要减少样本大小以适应爆炸残留物的分析。这项工作是为了使没收的和爆炸后的烈性炸药残留物的delta18O、delta13C和delta15N测量广泛用于连接材料、肇事者和集会地点。两名非裔美国女本科生将参与这项工作，这项研究的一些结果将与7年级到大学的学生分享，以鼓励她们进入科学职业生涯。

0730456JahrenThis work will develop inter-laboratory standards and improved methods for high-precision mass spectroscopy and related techniques to aid forensic examination of post-explosion residues.This project will help overcome two fundamental barriers in the stable isotope forensics of high explosives i.e. the need for calibrated inter-laboratory standards (particularly for oxygen isotope analysis), and the need for reduced sample size in order to accommodate the analysis of explosion residues. The work is needed in order to make delta18O, delta13C, and delta15N measurements on confiscated and post-blast residues of high explosives widely useful for linking materials, perpetrators and sites of assembly.Two African American women undergraduate "scientists-in-training" will participate in this work, and some results of this study will be shared with students in grade 7 through college, to encourage them to enter careers in science.