Determination of the platinum-group elements and gold in ferromanganese nodule reference material NOD-A-1

Resumo

The concentrations of Ru, Pd, Ir, Pt, and Au were determined in a ferromanganese nodule reference sample NOD-A-1 by inductively coupled plasma mass-spectrometry. Sample preparation procedures include acid digestion and anion exchange preconcentration. Standard addition method was used to eliminate losses of the analyte during the chromatographic separation. The results are in agreement with previously published data. The low level of intermediate precision for Au between different subsamples of the same sample probably originates from the heterogeneous distribution of Au in ferromanganese nodules. The accumulation of PGE in ferromanganese nodules was studied using international reference samples.