"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

Keywords

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

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