TY - JOUR
T1 - GEOTRACES IC1 (BATS) contamination-prone trace element isotopes Cd, Fe, Pb, Zn, Cu, and Mo intercalibration
AU - Boyle, Edward A.
AU - John, Seth
AU - Abouchami, Wafa
AU - Adkins, Jess F.
AU - Echegoyen-Sanz, Yolanda
AU - Ellwood, Michael
AU - Flegal, A. Russell
AU - Fornace, Kyrstin
AU - Gallon, Celine
AU - Galer, Steve
AU - Gault-Ringold, Melanie
AU - Lacan, Francois
AU - Radic, Amandine
AU - Rehkamper, Mark
AU - Rouxel, Olivier
AU - Sohrin, Yoshiki
AU - Stirling, Claudine
AU - Thompson, Claire
AU - Vance, Derek
AU - Xue, Zichen
AU - Zhao, Ye
N1 - Publisher Copyright:
© 2012, by the American Society of Limnology and Oceanography, Inc.
PY - 2012
Y1 - 2012
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84872281534&partnerID=8YFLogxK
U2 - 10.4319/lom.2012.10.653
DO - 10.4319/lom.2012.10.653
M3 - Article
SN - 1541-5856
VL - 10
SP - 653
EP - 665
JO - Limnology and Oceanography: Methods
JF - Limnology and Oceanography: Methods
IS - 9
ER -