2136 (1995)] for �48 hours at 230°C. After dissolution, the PGEs were isolated from one another and the bulkrock matrix by anion-exchange chromatography [M. Rehkämper and A. N. Halliday, Talanta 44, 663 (1997)]. The pure PGE fractions were then analyzed with a Plasma 54 multiple-collector inductivel...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.152.6126 http://chaos.utexas.edu/manuscripts/1082487536.pdf |
| Summary: | 2136 (1995)] for �48 hours at 230°C. After dissolution, the PGEs were isolated from one another and the bulkrock matrix by anion-exchange chromatography [M. Rehkämper and A. N. Halliday, Talanta 44, 663 (1997)]. The pure PGE fractions were then analyzed with a Plasma 54 multiple-collector inductively coupled plasma mass spectrometer [A. N. Halliday et al., Int. J. Mass Spectrom. Ion Processes 146/147, 21 (1995)]. Multiple analysis of Iceland basalt sample BTHO and Alexo komatiite sample KAL-1 demonstrate that our techniques achieve external reproducibilities of �1.5 to 9 % for the PGEs in the concentration range from parts per billion to parts per trillion. Duplicate analysis of two peridotite samples (OMX-8 and C235A) indicate a somewhat lower reproducibility (�15%), probably owing to the heterogeneity |
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