RT Journal Article
T1 Laser-induced breakdown spectroscopy applied to the evaluation of penetration depth of bactericidal treatments based on silver nanoparticles in limestones.
A1 Mateo, Maripaz
A1 Becerra, Javier
A1 Zaderenko Partida, Ana Paula
A1 Ortiz, Pilar
A1 Nicolás, Ginés
K1 LIBS
K1 Depth analysis
K1 silver nanoparticles
K1 biocide
K1 limestone treatment
K1 construction materials
AB In this work, laser-induced breakdown spectroscopy (LIBS) was used to evaluate the depth penetration of nanoparticles employed as biocidal treatment in stones.The penetration of a biocidal treatment, based on silver nanoparticles, was studied on limestones from Utrera (Seville, Spain). This stone was commonly employed in historical buildings in south Spain. Silver nanoparticles provide an effective protection against bacterial development, but their assessment depends on the depth penetration of the particles. Therefore, LIBS depth profiles were used to localize the nanomaterials in the stone matrix to determine silver penetration with the aim of controlling the treatment process.The characteristic emission of Ag(I) at 338.289 nm was successfully identified in the LIBS spectra of thetreated samples, demonstrating the capability of the LIBS technique to be used for the de tection of silver nanoparticles in limestone. In addition, LIBS depth profiles were useful for characterizing the diffusion of this nanoparticle in the calcareous matrix of the limestone. The penetration of the silver bactericidal treatment in the Utrera limestone was estimated to be 130¿230 ¿m by LIBS depth analyses. This proof of concept demonstrates the capability of LIBS for depth analysis of limestone treated with silver nanoparticles and provides a useful tool to characterize the effectiveness of this biocidal treatment.
PB Elsevier
YR 2018
FD 2018-12-04
LK http://hdl.handle.net/10433/8068
UL http://hdl.handle.net/10433/8068
LA en
NO Spectrochimica Acta Part B: Atomic Spectroscopy, Vol. 152, pp.44-51.
NO Proyecto Art-Risk, BIA2015-64878-R
NO Departamento de Ingeniería Naval e Industrial, Laser Applications Laboratory, Universidade da Coruña
NO Departamento de Sistemas Físicos, Químicos y Naturales, Universidad Pablo de Olavide
DS RIO
RD May 9, 2026