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Determination of scandium, yttrium and rare earth elements in rocks by high resolution inductively coupled plasma-mass spectrometry


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Robinson, P and Townsend, AT and Yu, Z and Munker, C (1999) Determination of scandium, yttrium and rare earth elements in rocks by high resolution inductively coupled plasma-mass spectrometry. Geostandards Newsletter-Geostandards and Geoanalytical Research, 23 (1). pp. 31-46. ISSN 0150-5505

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The high sensitivity, minimal oxide formation and single internal standard capability of high resolution inductively coupled plasma-mass spectrometry (HR-ICP-MS) is demonstrated in the direct determination of Sc, Y and REE in the international reference materials: basalts (BCR-1, BHVO-1, BIR-1, DNC-1), andesite (AGV-1) and ultramafics (UB-N, PCC-1 and DTS-1). Time consuming ion exchange separation or preconcentration were found to be unnecessary. Smooth chondrite normalized plots of the REE in PCC-1 and DTS-1 were obtained in the range 0.8-50 ng g-1 (0.01-0.1× chondrite). Method precision was found to be digestion dependent with an average external repeatability of 2-4% for the basalts, AGV-1 and UB-N, and 10% for PCC-1 and DTS-1. The mass peak due to 45Sc was completely resolved from 29Si16O and 28Si16O1H spectral interferences using medium resolution, which casts doubt on the accuracy of Sc determinations using quadrupole ICP-MS. Literature values for Y in rock reference materials were found to be approximately 9% high after HR-ICP-MS and XRF analysis.

Item Type: Article
Keywords: rare earth elements, scandium, yttrium, high resolution inductively coupled plasma-mass spectrometry, silicate rocks, method developments
Journal or Publication Title: Geostandards Newsletter-Geostandards and Geoanalytical Research
Page Range: pp. 31-46
ISSN: 0150-5505
Additional Information:

In 2004, the Journal was retitled 'Geostandards and Geoanalytical Research'.

Date Deposited: 27 Jul 2008 19:59
Last Modified: 18 Nov 2014 03:45
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