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

EXP-SA：高爆炸药稳定同位素表征的方法开发

• 批准号: 0730456
• 负责人: Hope Jahren
• 金额: $ 39.72万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-15 至 2008-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0730456&HistoricalAwards=false
• 关键词: EXP; SA; Method; Development; Stable

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.

0730456 Jaime这项工作将为高精度质谱和相关技术制定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查。（特别是对于氧同位素分析），以及需要减少样品尺寸以适应爆炸残留物的分析。这项工作是必要的，以便对没收的和爆炸后的烈性炸药残留物进行δ 18 O、δ 13 C和δ 15 N测量，广泛用于将材料、肇事者和集会地点联系起来，两名非裔美国女大学生“培训科学家”将参加这项工作，这项研究的一些结果将与七年级到大学的学生分享，鼓励他们从事科学事业。