1. Bioscience Division, Bioenergy and Environmental Science, the National Stable Isotope Resource, Group B8, MS E529; Los Alamos National Laboratory; Los Alamos; NM; 87545; USA
2. Chemistry Division; Los Alamos National Laboratory; Los Alamos; NM; 87545; USA
3. Bioscience Division, Biosecurity and Public Health Group; Los Alamos National Laboratory; Los Alamos; NM; 87545; USA