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

Thumbnail Image
Boyle, Edward A.
John, Seth G.
Abouchami, Wafa
Adkins, Jess F.
Echegoyen-Sanz, Yolanda
Ellwood, Michael J.
Flegal, A. Russell
Fornace, Kyrstin L.
Gallon, Celine
Galer, Stephen J. G.
Gault-Ringold, Melanie
Lacan, Francois
Radic, Amandine
Rehkamper, Mark
Rouxel, Olivier J.
Sohrin, Yoshiki
Stirling, Claudine H.
Thompson, Claire
Vance, Derek
Xue, Zichen
Zhao, Ye
Linked Authors
Alternative Title
Date Created
Related Materials
Replaced By
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.
Author Posting. © Association for the Sciences of Limnology and Oceanography, 2012. This article is posted here by permission of Association for the Sciences of Limnology and Oceanography for personal use, not for redistribution. The definitive version was published in Limnology and Oceanography: Methods 10 (2012): 653-665, doi:10.4319/lom.2012.10.653.
Embargo Date
Limnology and Oceanography: Methods 10 (2012): 653-665
Cruise ID
Cruise DOI
Vessel Name