Imperial College London
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ProfessorTinavan de Flierdt

Faculty of Engineering, Department of Earth Science & Engineering

Head of the Department of Earth Science and Engineering
 
 
 
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Contact

 

+44 (0)20 7594 1290tina.vandeflierdt

 
 
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Location

 

G.30Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Struve:2016:10.1002/2015GC006130,
author = {Struve, T and van, de Flierdt T and Robinson, LF and Bradtmiller, LI and Hines, SK and Adkins, JF and Lambelet, M and Crocket, KC and Kreissig, K and Coles, B and Auro, ME},
doi = {10.1002/2015GC006130},
journal = {Geochemistry Geophysics Geosystems},
pages = {232--240},
title = {Neodymium isotope analyses after combined extraction of actinide and lanthanide elements from seawater and deep-sea coral aragonite},
url = {http://dx.doi.org/10.1002/2015GC006130},
volume = {17},
year = {2016}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Isotopes of the actinide elements protactinium (Pa), thorium (Th) and uranium (U), and the lanthanide element neodymium (Nd) are often used as complementary tracers of modern and past oceanic processes. The extraction of such elements from low abundance matrices, such as seawater and carbonate, is however labor-intensive and requires significant amounts of sample material. We here present a combined method for the extraction of Pa, Th and Nd from 5 to 10 L seawater samples, and of U, Th and Nd from <1 g carbonate samples. Neodymium is collected in the respective wash fractions of Pa-Th and U-Th anion exchange chromatographies. Regardless of the original sample matrix, Nd is extracted during a two-stage ion chromatography, followed by thermal ionization mass spectrometry (TIMS) analysis as NdO+. Using this combined procedure, we obtained results for Nd isotopic compositions on two GEOTRACES consensus samples from Bermuda Atlantic Time Series (BATS), which are within error identical to results for separately sampled and processed dedicated Nd samples (εNd = -9.20 ± 0.21 and -13.11 ± 0.21 for 15 and 2000 m water depths, respectively; intercalibration results from 14 laboratories: εNd = -9.19 ± 0.57 and -13.14 ± 0.57). Furthermore, Nd isotope results for an in-house coral reference material are identical within analytical uncertainty for dedicated Nd chemistry and after collection of Nd from U-Th anion exchange chromatography. Our procedure does not require major adaptations to independently used ion exchange chromatographies for U-Pa-Th and Nd, and can hence be readily implemented for a wide range of applications.
AU  - Struve,T
AU  - van,de Flierdt T
AU  - Robinson,LF
AU  - Bradtmiller,LI
AU  - Hines,SK
AU  - Adkins,JF
AU  - Lambelet,M
AU  - Crocket,KC
AU  - Kreissig,K
AU  - Coles,B
AU  - Auro,ME
DO  - 10.1002/2015GC006130
EP  - 240
PY  - 2016///
SN  - 1525-2027
SP  - 232
TI  - Neodymium isotope analyses after combined extraction of actinide and lanthanide elements from seawater and deep-sea coral aragonite
T2  - Geochemistry Geophysics Geosystems
UR  - http://dx.doi.org/10.1002/2015GC006130
UR  - http://hdl.handle.net/10044/1/28427
VL  - 17
ER  -
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