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Coupling Size‐Exclusion Chromatography and ICP‐MS to Investigate the Speciation of Platinum‐Group Elements in Environmental Samples
Author(s) -
Menzel Christoph M.,
Berner Zsolt,
Stüben Doris
Publication year - 2001
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.2001.tb00599.x
Subject(s) - platinum group , size exclusion chromatography , inductively coupled plasma mass spectrometry , reproducibility , chemistry , detection limit , platinum , genetic algorithm , chromatography , analytical chemistry (journal) , column chromatography , resolution (logic) , mass spectrometry , catalysis , computer science , biochemistry , evolutionary biology , artificial intelligence , biology , enzyme
The applicability of size‐exclusion chromatography (SEC) coupled online with a high resolution ICP‐MS (HR‐ICP‐MS) to investigate the speciation of the platinum‐group elements (PGE), Rh, Pd and Pt, was evaluated. Experiments were carried out to determine the efficiency of different hydrophilic and hydrophobic size‐exclusion gel materials to select the optimal eluent in respect of resolution, recovery, reproducibility and limit of detection. The suitability of HR‐ICP‐MS as a reliable detection instrument at low pg ml −1 levels was investigated by examining possible mass interferences with Rh, Pd and Pt. Laboratory experiments demonstrated the interaction and capability of forming complexes of humic substances with PGE, demonstrating the potential role of these ubiquitous natural substances in the mobilisation of PGE in the environment.