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GEOTRACES IC1 (BATS) contamination-prone trace element isotopes Cd, Fe, Pb, Zn, Cu, and Mo intercalibration


Boyle, EA and John, S and Abouchami, W and Adkins, JF and Echegoyen-Sanz, Y and Ellwood, M and Flegal, AR and Fornace, K and Gallon, C and Galer, S and Gault-Ringold, M and Lacan, F and Radic, A and Rehkamper, M and Rouxel, O and Sohrin, Y and Stirling, C and Thompson, C and Vance, D and Xue, Z and Zhao, Y, GEOTRACES IC1 (BATS) contamination-prone trace element isotopes Cd, Fe, Pb, Zn, Cu, and Mo intercalibration, Limnology and Oceanography, 10, (9) pp. 653-665. ISSN 0024-3590 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 American Society of Limnology and Oceanography, Inc.

DOI: doi:10.4319/lom.2012.10.653


We report data on the isotopic composition of cadmium, copper, iron, lead, zinc, and molybdenum at the GEOTRACES IC1 BATS Atlantic intercalibration station. In general, the between lab and within‐lab precisions are adequate to resolve global gradients and vertical gradients at this station for Cd, Fe, Pb, and Zn. Cd and Zn isotopes show clear variations in the upper water column and more subtle variations in the deep water; these variations are attributable, in part, to progressive mass fractionation of isotopes by Rayleigh distillation from biogenic uptake and/or adsorption. Fe isotope variability is attributed to heavier crustal dust and hydrothermal sources and light Fe from reducing sediments. Pb isotope variability results from temporal changes in anthropogenic source isotopic compositions and the relative contributions of U.S. and European Pb sources. Cu and Mo isotope variability is more subtle and close to analytical precision. Although the present situation is adequate for proceeding with GEOTRACES, it should be possible to improve the within‐lab and between‐lab precisions for some of these properties.

Item Details

Item Type:Refereed Article
Keywords:isotope geochemistry, intercalibration, marine
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Chemical oceanography
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Measurement and assessment of marine water quality and condition
UTAS Author:Gault-Ringold, M (Dr Melanie East)
ID Code:125198
Year Published:2012
Deposited By:CRC-Antarctic Climate & Ecosystems
Deposited On:2018-04-06
Last Modified:2018-05-07

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