Stable Isotope Characterization of TICs/TIMs: Analytical Progress Report.

Volpe, A. ; Singleton, M.

Technical Information Center Oak Ridge Tennessee

关键词: Cyanides;    Isotopes;    Alkali metal compounds;    Chemical compositions;    Nitrogen;   

RP-ID  :  DE2009958174

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The authors measured twelve alkali cyanide samples that were also sent to ORNL and PNNL collaborators. While results indicate distinct delta(sup 13)C and delta(sup 15)N values that would be useful to signature studies, the alkali cyanides, especially NaCN, show chemical breakdown during storage that will influence forensic analysis. Carbon and nitrogen stable isotopic compositions of raw materials used to synthesis TETS were measured. Results indicate wide ranges in delta(sup 13)C and delta(sup 15)N values. Using these raw materials, LLNL scientists synthesized three batches of TETS following published procedures. Stable isotopic measurements of TETS synthesis products indicates nitrogen (epsilon(sup 15)N=-1.7 to -0.8) and carbon (epsilon(sup 13)C=-1.0 to -0.1) fractionation during production.