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- aggregation classification "A1".
- aggregation creator person.
- aggregation creator person.
- aggregation creator person.
- aggregation creator person.
- aggregation date "2001".
- aggregation format "application/pdf".
- aggregation hasFormat 138537.bibtex.
- aggregation hasFormat 138537.csv.
- aggregation hasFormat 138537.dc.
- aggregation hasFormat 138537.didl.
- aggregation hasFormat 138537.doc.
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- aggregation hasFormat 138537.yaml.
- aggregation isPartOf urn:issn:0937-0633.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Earth and Environmental Sciences".
- aggregation title "The use of sector field ICP-mass spectrometry for Rb-Sr geochronological dating".
- aggregation abstract "Rb-Sr dating, one of the most important tools in geochronology, requires determination of the Rb/Sr concentration ratios and the Sr-87/Sr-86 isotope ratios in cogenetic minerals or rocks and is traditionally performed by thermal ionization mass spectrometry (TIMS). In this work we investigated whether sector field inductively coupled plasma mass spectrometry (ICP-MS), which is characterized by a high sample throughput and straightforward sample introduction, could be used as an alternative to TIMS. To avoid spectral overlap of the ion signals of the isobaric nuclides Sr-87 and Rb-87, Sr was separated from Rb by cation-exchange chromatography. A mathematical correction was applied to take into account the small amount of Rb that can be present in the Sr fraction. The isotope ratio accuracy and precision attainable with ICP-MS were evaluated by analysis of several reference materials from the US Geological Survey. The results of this evaluation show that excellent accuracy could be achieved, the internal precision (repeatability) of the isotope ratio (expressed as the relative standard deviation for 10 successive 1-min measurements) was 0.04-0.12%. An attempt was made to calculate the total or combined uncertainty on the isotope ratio results, by also taking into account other possible error sources (corrections for mass discrimination, detector dead time, blank signal and Rb fraction). Finally, the same procedure was used for dating two rock formations that were 2500 Ma and 350 Ma old, according to age determinations previously performed by the Rb-Sr laboratory of the University of Munchen (Germany) using TIMS. The ICP-MS results (2520 +/- 150 Ma and 379 +/- 48 Ma) obtained for these formations compare well with the corresponding TIMS data (2509 +/- 120 Ma and 357 +/- 25 Ma).".
- aggregation authorList BK75772.
- aggregation endPage "920".
- aggregation issue "7".
- aggregation startPage "915".
- aggregation volume "371".
- aggregation aggregates 3052985.
- aggregation isDescribedBy 138537.
- aggregation similarTo s002160101049.
- aggregation similarTo LU-138537.