Rare Earth Element and Yttrium Variability in South East Queensland Waterways |
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Authors: | Michael G. Lawrence Alan Greig Kenneth D. Collerson Balz S. Kamber |
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Affiliation: | (1) Advanced Centre for Queensland University Isotopic Research Excellence, University of Queensland, Richards Building, Brisbane, QLD 4072, Australia |
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Abstract: | We present data for the rare earth elements and yttrium (REY) in the National Research Council of Canada natural river water reference material SLRS-4 and 19 natural river waters from small catchments in South-East Queensland, Australia, by a direct ICP-MS method. The 0.22 μm filtered river water samples show a large degree of variability in both the REY concentration, e.g., La varies from 13 to 1157 ppt, and shape of the alluvial-sediment-normalised REY patterns with different samples displaying light, middle or heavy rare earth enrichment. In addition, a spatial study was undertaken along the freshwater section of Beerburrum Creek, which demonstrates that ~75% of the total REYs in this waterway are removed prior to estuarine mixing without evidence of fractionation. |
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Keywords: | fractionation ICP-MS Queensland rare earth elements rivers SLRS-4 yttrium |
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