"Non-invasive" portable laser ablation sampling of art and archaeological materials with subsequent Sr-Nd isotope analysis by TIMS using 1013 Ω amplifiers

A.C.S. Knaf*, Janne Koornneef, Gareth R Davies

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

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Abstract

A new integrated trace element and multi-isotope provenancing methodology is presented that uses a portable “non-invasive” pulsed laser ablation sampling technique. Samples are collected on location onto Teflon filters for return to a clean laboratory for low blank (pg) geochemical procedures. Ablation pits approximately 60 or 120 μm in width and depth remove mg amounts of material. Following dissolution, trace element ratios are determined by inductively coupled plasma mass spectrometry and combined Sr–Nd isotopes by thermal ionization mass spectrometry. Use of 1013 Ω resistors allows precise analysis of subnanogram amounts of Sr-Nd isotopes, which coupled with the trace element data, provides highly effective multi-variant discrimination for material provenance and authenticity verification. Monitoring of blank contributions is required.
Original languageEnglish
Pages (from-to)2210-2216
Number of pages7
JournalJournal of Analytical Atomic Spectrometry
Volume32
Issue number11
DOIs
Publication statusPublished - 1 Nov 2017

Funding

This research received funding from the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement no. 319209 and the European Union's Horizon 2020 research and innovation programme under grant agreement no. 654208 (Europlanet 2020 RI). Thanks to Richard Smeets, Bas van der Wagt and Kirsten van Zuilen who provided analytical assistance. Bram Mooij and Judith van Santen are acknowledged for advice on ablation pit volume determination. Detlef Günther, Bodo Hat-tendorf, Joachim Koch, Debora Käser and Marcel Burger provided invaluable input on the laser modication and usage. We are grateful to Martin Oeser-Rabe, Mona Weyrauch and Stefan Dultz for conducting the 3D laser scanning microscopy.

FundersFunder number
FP7/2007
Horizon 2020 Framework Programme319209, 871149, 654208
European Research Council
Seventh Framework Programme

    Keywords

    • laser ablation sampling, Sr-Nd isotopes, low blank, TIMS, archaeometry

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