Premium
Determination of the Platinum‐Group Elements and Gold in Twenty Rock Reference Materials by Inductively Coupled Plasma‐Mass Spectrometry (ICP‐MS) after Pre‐Concentration by Nickel Sulfide Fire Assay
Author(s) -
Plessen HansGerrit,
Erzinger Jörg
Publication year - 1998
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.1998.tb00691.x
Subject(s) - inductively coupled plasma mass spectrometry , nickel sulfide , platinum group , chemistry , certified reference materials , mass spectrometry , sulfide , nickel , inductively coupled plasma , analytical chemistry (journal) , platinum , detection limit , chromatography , plasma , biochemistry , physics , organic chemistry , quantum mechanics , catalysis
The platinum‐group elements (PGE) and gold have been determined in twenty international rock reference materials by inductively coupled plasma‐mass spectrometry (ICP‐MS) after pre‐concentration by a nickel sulfide fire assay. It was possible to achieve determination limits for a 50 g sample that ranged from 1 pg g ‐1 (Rh) to 23 pg g ‐1 (Au). Compared to published certified and recommended values for rock reference materials, the trueness of the method was found to be good. However, in some cases we observed large deviations for all elements in the sub 10 ng g ‐1 range within individual reference sample splits. Our results show that the PGE and Au are inhomogeneously distributed in the reference materials analysed here, where they are present in low concentrations, using 50 g test portions.