Determination of all platinum-group elements in mantle derived xenoliths by neutron activation analysis with NiS fire-assay preconcentration |
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| Authors: | X. L. Li M. Ebihara |
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| Affiliation: | (1) Shanghai Institute of Nuclear Research, Chinese Academy of Sciences, Shanghai, 201800, P.R. China;(2) Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Tokyo, 192-0397, Japan |
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| Abstract: | A modified NiS fire-assay neutron activation method is developed for the determination of all platinum-group elements (PGEs) in mantle-derived xenoliths. This method is characterized by sub-ppb detection limits, <0.1~0.002 ppb procedural blanks and 7~15% analytical precision for PGEs. Analyses of PGE standard rocks indicate that this modified NiS fire-assay neutron activation method is as reliable as the method previously proposed for a large scale of samples. The capability of the method for the measurement of PGEs in the upper mantle is also illustrated by some exciting results obtained from mantle-derived xenoliths of Eastern China. |
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