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{Brett:2018:10.1111/ggr.12215,
author = {Brett, A and Prytulak, J and Hammond, SJ and Rehkamper, M},
doi = {10.1111/ggr.12215},
journal = {Geostandards and Geoanalytical Research},
pages = {339--360},
title = {Thallium mass fraction and stable isotope ratios of sixteen geological reference materials},
url = {http://dx.doi.org/10.1111/ggr.12215},
volume = {42},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Thallium stable isotope ratio and mass fraction measurements were performed on sixteen geological reference materials spanning three orders of magnitude in thallium mass fraction, including both whole-rock and partially-separated mineral powders. For stable isotope ratio measurements, a minimum of three independent digestions of each reference material were obtained. High-precision trace element measurements (including Tl) were also performed for the majority of these RMs. The range of Tl mass fractions represented is 10 ng g-1 to 16 μg g-1, and Tl stable isotope ratios (reported for historical reasons as ε205Tl relative to NIST SRM 997) span the range -4 to +2. With the exception – attributed to between-bottle heterogeneity – of G-2, the majority of data are in good agreement with published or certified values, where available. The precision of mean of independent measurement results between independent dissolutions suggests that, for the majority of materials analysed, a minimum digested mass of 100 mg is recommended tomitigate the impact of small-scale powder heterogeneity. Of the sixteen materials analysed, we therefore recommend for use as Tl reference materials the USGS materials BCR-2, COQ-1, GSP-2, and STM-1; CRPG materials AL-I, AN-G, FK-N, ISH-G, MDO-G, Mica-Fe, Mica-Mg, and UB-N; NIST SRM 607; and OREAS14P.
AU  - Brett,A
AU  - Prytulak,J
AU  - Hammond,SJ
AU  - Rehkamper,M
DO  - 10.1111/ggr.12215
EP  - 360
PY  - 2018///
SN  - 1639-4488
SP  - 339
TI  - Thallium mass fraction and stable isotope ratios of sixteen geological reference materials
T2  - Geostandards and Geoanalytical Research
UR  - http://dx.doi.org/10.1111/ggr.12215
UR  - http://hdl.handle.net/10044/1/59145
VL  - 42
ER  -
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