University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

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Classification: Geological -> mineral -> cordierite

Citations 1

"Investigation Of Hafnium(III) Oxide Cation Interference In The Determination Of Platinum In A Catalytic Converter (cordierite) By Inductively Coupled Plasma Mass Spectrometry"
Talanta 1997 Volume 44, Issue 2 Pages 221-230
M. Parent*, H. Vanhoe, L. Moens and R. Dams

Abstract: Two mathematical correction methods based on the HfO+:Hf+ ratio and prior separation of Hf using adsorption chromatography and isotope dilution were investigated for elimination of interference in the determination of Pt in cordierite by ICP-MS. Memory effects were also investigated. The operating conditions for the VG PlasmaQuad PQI instrument are tabulated. A flow injection valve was used for sample introduction in order to prevent clogging of the cone orifice. Samples were subjected to open-acid digestion or high-pressure asher digestion and were introduced using thermospray nebulization (Vanhoe et al., 1994, J. Anal. Atomic Spectrom., 9, 815) in order to lower the detection limits. Mathematical correction (details given) gave accurate results for Hf/Pt ratios of up to 50. Nearly quantitative removal of Hf was achieved on Amberlite XAD-4 resin (Lee et al., 1993, Anal. Chim. Acta, 272, 193) and use of isotope dilution enabled correction for Pt losses to be made; RSD were 10% using this method.
Platinum Mass spectrometry Sample preparation Sample preparation Interferences Resin Amberlite