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

View/ Open
Date
2012-09Author
Boyle, Edward A.
Concept link
John, Seth G.
Concept link
Abouchami, Wafa
Concept link
Adkins, Jess F.
Concept link
Echegoyen-Sanz, Yolanda
Concept link
Ellwood, Michael J.
Concept link
Flegal, A. Russell
Concept link
Fornace, Kyrstin L.
Concept link
Gallon, Celine
Concept link
Galer, Stephen J. G.
Concept link
Gault-Ringold, Melanie
Concept link
Lacan, Francois
Concept link
Radic, Amandine
Concept link
Rehkamper, Mark
Concept link
Rouxel, Olivier J.
Concept link
Sohrin, Yoshiki
Concept link
Stirling, Claudine H.
Concept link
Thompson, Claire
Concept link
Vance, Derek
Concept link
Xue, Zichen
Concept link
Zhao, Ye
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/6632As published
https://doi.org/10.4319/lom.2012.10.653DOI
10.4319/lom.2012.10.653Abstract
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.
Description
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.