RT Journal Article
T1 Dual combination of cleaning methods (scalpel, biocide, laser) to enhance lichen removal from granite
A1 Pozo Antonio, José Santiago
A1 Rivas Brea, Maria Teresa
A1 Lopez De Silanes Vazquez, Maria Eugenia
A1 Ramil, Alberto
A1 López Díaz, Ana Jesús
K1 3312.08 Propiedades de Los Materiales
K1 3106.01 Conservación
AB Three cleaning methods, namely i) a commercial biocide applied by brush with the subsequent extraction of organic remains by a rod, ii) a scalpel or iii) a Nd:YVO4 laser at 355 nm, single application as well as paired combinations, were tested for removing from a granite two different crustose lichens: Diploschistes scruposus (lighter with a clearly distinguished thallus) and Polysporina simplex (darker with a poorly developed thallus). In addition to the removal rate, side effects such as melting of biotite and feldspar grains and chromatic changes were assessed. The multianalytical approach was based on stereomicroscopy, light microscopy, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy and color spectrophotometry. Combining cleaning methods enhanced the removal efficacy. Biocide followed by laser was the most effective method for removing both lichens colonizing this granite. Mineral melting was more intense for the samples covered by Polysporina simplex due to its lower coverage degree and darker color.
PB International Biodeterioration & Biodegradation
SN 09648305
YR 2022
FD 2022-03
LK http://hdl.handle.net/11093/3005
UL http://hdl.handle.net/11093/3005
LA eng
NO International Biodeterioration & Biodegradation, 168, 105373 (2022)
NO Financiado para publicación en acceso aberto: Universidade de Vigo/CISUG
NO Agencia Estatal de Investigación | Ref. BIA2017-85897-R
DS Investigo
RD 03-dic-2024