Journal
APPLIED GEOCHEMISTRY
Volume 96, Issue -, Pages 87-91Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apgeochem.2018.06.008
Keywords
Handheld LIBS; Limestone; Cultural heritage; In situ field geologic instrument; Field portable technology
Categories
Funding
- project Il restauro delle grandi opere in Puglia: l'innovazione attraverso le nanotecnologie e metodologie diagnostiche avanzate, P.O. Puglia FESR 2007-2013
- Bando Aiuti a Sostegno dei Partenariati Regionali per l'Innovazione [3Z3VZ46]
- MADAtec s.r.l.
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Laser-induced breakdown spectroscopy (LIBS) has been in use for decades, but only recently the technique has progressed so to allow the construction of efficient handheld, self-contained commercial instruments featuring a large range of capabilities. In particular, the development of portable handheld instruments able to perform noninvasive, spatially resolved, multielement, in-situ analysis has provided an impressive impulse to the scientific investigation of cultural heritage materials. In this work, the design of a handheld LIBS instrument and the first test measurements performed on a fragment of a sedimentary rock monument are presented. A full broadband LIBS emission spectrum with a point and shoot operation was recorded directly within few seconds, so providing information on the elements present in the weathered layer in comparison to the stone surface. Further, the Calibration Free (CF)-LIBS approach was used to test the possibility to obtain a suitable quantitative composition of the main elements present in the sample.
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