Abstract

The present work aims to evaluate the alteration conditions of historical limestone rocks exposed to urban environment using the Laser-Induced Breakdown Spectroscopy (LIBS) technique. The approach proposed is based on the microscale three dimensional (3D) compositional imaging of the sample through double-pulse micro-Laser-Induced Breakdown Spectroscopy (DP-?LIBS) in conjunction with optical microscopy. DP-?LIBS allows to perform a quick and detailed in-depth analysis of the composition of the weathered artifact by creating a 'virtual thin section' (VTS) of the sample which can estimate the extent of the alteration processes occurred at the limestone surface. The DP-?LIBS analysis of these thin sections showed a reduction with depth of the elements (mainly Fe, Si and Na) originating from atmospheric dust, particulate deposition and the surrounding environment (due to the proximity of the sea), whereas, the LIBS signal of Ca increased in intensity from the black crust to the limestone underneath.

Autore Pugliese

• Senesi Giorgio Saverio , De Pascale Olga

Tutti gli autori

• Senesi G.S.; Campanella B.; Grifoni E.; Legnaioli S.; Lorenzetti G.; Pagnotta S.; Poggialini F.; Palleschi V.; De Pascale O.

Titolo volume/Rivista

Spectrochimica acta. Part B, Atomic spectroscopy

Anno di pubblicazione

2018

ISSN

0584-8547

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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