Methodology for Nitrogen Isotope Analysis at CRREL.

Abstract : This report documents the chronology of events and the procedures employed in developing a nitrogen isotope analysis capability at the U.S. Army Cold Regions Research and Engineering Laboratory. Both the instrumental and wet chemistry procedures are reported to enable others interested in the procedures to obtain useful data. The procedures described have resulted in the ability to measure the N15/N14 ratio to a precision of 0.001 atom %, a value easily within the acceptable range for tracer experiments. (Author)