Stable Isotope Characterization of TICs/TIMs: Analytical Progress Report

[摘要] We 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 ({var_epsilon} {sup 15}N = -1.7 to -0.8) and carbon ({var_epsilon} {sup 13}C = -1.0 to -0.1) fractionation during production.

[发布日期] 2009-06-05

[学科分类] 化学（综合）

[关键词] BREAKDOWN;CARBON;CYANIDES;FRACTIONATION;LAWRENCE LIVERMORE NATIONAL LABORATORY;NITROGEN;ORNL;PRODUCTION;PROGRESS REPORT;RAW MATERIALS;STABLE ISOTOPES;STORAGE;SYNTHESIS