Elemental imaging of heterogeneous inorganic archaeological samples by means of simultaneous laser induced breakdown spectroscopy and laser ablation inductively coupled plasma mass spectrometry measurements

Multilayered fragments of murals were used to evaluate the usefulness of two laser-based instrumental methods: laser induced breakdown spectroscopy (LIBS) and laser ablation (LA) inductively coupled plasma mass spectrometry (ICP-MS) for elemental imaging of unique historic samples. Simultaneous LA/L...

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Bibliographic Details
Published in:Talanta (Oxford) 2018-03, Vol.179, p.784-791
Main Authors: Syta, Olga, Wagner, Barbara, Bulska, Ewa, Zielińska, Dobrochna, Żukowska, Grażyna Zofia, Gonzalez, Jhanis, Russo, Richard
Format: Article
Language:English
Subjects:
Imaging
LA-ICP-MS
LIBS
Pigment identification
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Summary:Multilayered fragments of murals were used to evaluate the usefulness of two laser-based instrumental methods: laser induced breakdown spectroscopy (LIBS) and laser ablation (LA) inductively coupled plasma mass spectrometry (ICP-MS) for elemental imaging of unique historic samples. Simultaneous LA/LIBS measurements with the use of 266nm Nd:YAG laser were performed on cross-sections of mediaeval Nubian objects with specific blue painting layers including either Egyptian blue (CaCuSi4O10) or lapis lazuli (Na8–10Al6Si6O24S2–4). A combined use of both laser-based methods allowed for clear distinguishing of blue pigments based on visual imaging of a chemical composition of heterogeneous archaeological inorganic samples. The identification of the pigments was confirmed with Raman spectroscopy. [Display omitted] •The beneficial use of LA/LIBS approach for elemental (including O) mapping of inorganic archaeological samples.•Simultaneous LIBS/LA-ICP-MS imaging of multilayered cross-sections.•Clear identification of two important historic blue pigments (CaCuSi4O10 and Na8-10Al6Si6O24S2-4) even in the form of tiny grains.
ISSN:0039-9140
1873-3573
DOI:10.1016/j.talanta.2017.12.011