Imperial College London
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Professor Mark Rehkämper

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Isotope Geochemistry
 
 
 
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Contact

 

markrehk Website

 
 
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Location

 

451Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Laycock:2015:10.1039/c5ja00098j,
author = {Laycock, A and Coles, B and Kreissig, K and Rehkaemper, M},
doi = {10.1039/c5ja00098j},
journal = {Journal of Analytical Atomic Spectrometry},
pages = {297--302},
title = {High precision Ce-142/Ce-140 stable isotope measurements of purified materials with a focus on CeO2 nanoparticles},
url = {http://dx.doi.org/10.1039/c5ja00098j},
volume = {31},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Engineered CeO2 nanoparticles (NPs) are becoming increasingly prevalent in consumer products and this has raised concerns about the unknown behaviour and fate of such materials in the environment. Analytical limitations have hampered the detection of CeO2 NPs in natural systems at environmentally relevant levels. This study presents data on the inherent stable isotope composition of commercially available purified Ce materials with a particular focus on CeO2 NPs. The aim of this investigation is to determine whether CeO2 NPs posses a distinct isotopic signature that may be exploited for their detection in natural systems. To achieve this, suitable stable isotope measurement protocols were developed for the precise determination of the 142Ce/140Ce isotope ratio by multiple collector ICP-MS using Ba for external normalisation of the instrumental mass bias. The data presented show that precisions of ±0.01‰ (2se) and ±0.04‰ (2sd) can be routinely achieved with these techniques. The results also demonstrate that commercially available CeO2 NPs do not have a distinct Ce isotope composition that may be exploited for the purpose of stable isotope tracing.
AU  - Laycock,A
AU  - Coles,B
AU  - Kreissig,K
AU  - Rehkaemper,M
DO  - 10.1039/c5ja00098j
EP  - 302
PY  - 2015///
SN  - 1364-5544
SP  - 297
TI  - High precision Ce-142/Ce-140 stable isotope measurements of purified materials with a focus on CeO2 nanoparticles
T2  - Journal of Analytical Atomic Spectrometry
UR  - http://dx.doi.org/10.1039/c5ja00098j
UR  - http://hdl.handle.net/10044/1/29928
VL  - 31
ER  -
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