NAA OF 2 DEEP-SEA MANGANESE-NODULE RMS FOR MULTIELEMENTS

Mn-nodule is one of the most important deep sea mineral resources to b e explored and exploited in the next century. Analytical quality contr ol based on this kind of Certified Reference Materials (CRMs) is there fore necessary. In the present work, nearly 30 elements in two Chinese Mn nodule Reference Materials (RMs), GSPN-2 and GSPN-3, were determin ed using extended Kg-relative comparison NAA technique, developed in o ur laboratory. The unique features of this work include: (1) high accu racy obtained by the internal validation function of our technique; (2 ) extensive determinable elements obtained by the hybrid nature of our software and (3) neutron flux self-shielding corrections.