Isotopic analysis of sub-nanogram neodymium loads using new ATONA™ amplifiers.

These measurements represent an improvement of more than a factor of 3 in external measurement reproducibility relative to previously published 143 Nd/144 Nd measurements of 100-pg loads. This new technology will allow for the measurement of smaller samples for precise isotope ratios and open new avenues of research in the geological and nuclear forensic communities.