Journal
MICROCHIMICA ACTA
Volume 166, Issue 3-4, Pages 255-260Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-009-0194-7
Keywords
Coke; Platinum; Cloud point extraction; Inductively coupled plasma mass spectrometry (ICP-MS)
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Funding
- Academy of Finland
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Platinum in coke samples was determined by inductively coupled plasma mass spectrometry (ICP-MS) after microwave-assisted sample digestion and temperature controlled microwave assisted cloud point extraction (MW-CPE). Interferences due to hafnium ((HfO)-Hf-179-O-16) were successfully eliminated using MW-CPE with 2-MBT prior to the determination of platinum by ICP-MS. The validity of the method was studied by spike recovery tests and by analyzing certified reference material (BCR-723 street dust). The results obtained for platinum in the BCR-723 were generally in good agreement with the certified values. Furthermore, the preliminary platinum results obtained for coke sample by ICP-MS after MW-CPE were compared to those obtained by a reference method (NiS-Fire Assay preconcentration/Te coprecipitation and ICP-MS determination).
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