Laser-induced breakdown spectroscopy in the study of degraded
glass mosaics

a 2017

Laser-induced breakdown spectroscopy in the study of degraded glass mosaics

POSPÍŠILOVÁ, Eva, David HRADIL, Dana ROHANOVÁ, Karel NOVOTNÝ, Janka HRADILOVÁ et. al.

Základní údaje

Originální název

Laser-induced breakdown spectroscopy in the study of degraded glass mosaics

Autoři

POSPÍŠILOVÁ, Eva, David HRADIL, Dana ROHANOVÁ, Karel NOVOTNÝ a Janka HRADILOVÁ

Vydání

6th Interdisciplinary ALMA Conference & 2nd CrysAS workshop, 2017

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10406 Analytical chemistry

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

LIBS; depth profiling; mosaics

Příznaky

Mezinárodní význam

Změněno: 28. 2. 2019 11:39, Mgr. Eva Zikmundová, Ph.D.

Anotace

V originále

Laser-Induced Breakdown Spectroscopy (LIBS) is a technique providing information on elemental composition of the sample using layer-by-layer ablation and subsequent analysis. Samples of degraded blue glass tesserae, which probably represented the original (Gothic) pieces covering the surface of the mediaeval statue of Madonna from Malbork Castle, Poland, before its destruction at the end of World War II., were analyzed using two different LIBS devices. Thirty laser shots were applied to one point and individual spectra were obtained for each shot. Significant elemental lines from spectra acquired by both instruments were chosen and processed to create the depth profiles of the samples. Calibration of the depth profile was performed applying 5, 10, 15, 20, 25 and 30 shots and measuring the depth of the craters using a profilometer. Determining the behaviour of significant elements in the depth profile together with the calibration allowed examination of the thickness of the corrosion layer. Based on the depth profile of potassium it was confirmed that the corrosion layer reaches a maximum of 100 um, which exactly corresponds to the thickness of the visible corrosion layer on the sample cross-section observed in the scanning electron microscope (SEM). From a methodological point of view, it is important that the LIBS method can be applied directly to the surface of the mosaic with no need of sampling and cutting the sample for microscopic studies. Further, LIBS proved to be a suitable method for a ditermining of very low contents of cobalt (not captured by SEM-EDS), which is an intense ionic dye, commonly found in early Gothic glasses. Its concentrations are usually only slightly elevated above the background level and could only be determined by suitable analytical methods, as, e. g. ICP-MS (in the case of the mediaeval mosaic of the Last Judgement in Prague) or XRF and/or LIBS (in the case of the Malbork's Madonna). Materials research of mediaeval mosaics in northern Poland helped to answer the question of their origin. The composition of the glass batch and other additives is closer to German/Prussian productions than to Bohemian ones.

Návaznosti

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

Citovat

POSPÍŠILOVÁ, Eva, David HRADIL, Dana ROHANOVÁ, Karel NOVOTNÝ a Janka HRADILOVÁ. Laser-induced breakdown spectroscopy in the study of degraded glass mosaics. In 6th Interdisciplinary ALMA Conference & 2nd CrysAS workshop. 2017.

@proceedings{1501786,
   author = {Pospíšilová, Eva and Hradil, David and Rohanová, Dana and Novotný, Karel and Hradilová, Janka},
   booktitle = {6th Interdisciplinary ALMA Conference & 2nd CrysAS workshop},
   keywords = {LIBS; depth profiling; mosaics},
   language = {eng},
   title = {Laser-induced breakdown spectroscopy in the study of degraded glass mosaics},
   year = {2017}
}

TY  - CONF
ID  - 1501786
AU  - Pospíšilová, Eva - Hradil, David - Rohanová, Dana - Novotný, Karel - Hradilová, Janka
PY  - 2017
TI  - Laser-induced breakdown spectroscopy in the study of degraded glass mosaics
KW  - LIBS
KW  - depth profiling
KW  - mosaics
N2  - Laser-Induced Breakdown Spectroscopy (LIBS) is a technique providing information on elemental composition of the sample using layer-by-layer ablation and subsequent analysis. Samples of degraded blue glass tesserae, which probably represented the original (Gothic) pieces covering the surface of the mediaeval statue of Madonna from Malbork Castle, Poland, before its destruction at the end of World War II., were analyzed using two different LIBS devices. Thirty laser shots were applied to one point and individual spectra were obtained for each shot. Significant elemental lines from spectra acquired by both instruments were chosen and processed to create the depth profiles of the samples. Calibration of the depth profile was performed applying 5, 10, 15, 20, 25 and 30 shots and measuring the depth of the craters using a profilometer. Determining the behaviour of significant elements in the depth profile together with the calibration allowed examination of the thickness of the corrosion layer. Based on the depth profile of potassium it was confirmed that the corrosion layer reaches a maximum of 100 um, which exactly corresponds to the thickness of the visible corrosion layer on the sample cross-section observed in the scanning electron microscope (SEM). From a methodological point of view, it is important that the LIBS method can be applied directly to the surface of the mosaic with no need of sampling and cutting the sample for microscopic studies. Further, LIBS proved to be a suitable method for a ditermining of very low contents of cobalt (not captured by SEM-EDS), which is an intense ionic dye, commonly found in early Gothic glasses. Its concentrations are usually only slightly elevated above the background level and could only be determined by suitable analytical methods, as, e. g. ICP-MS (in the case of the mediaeval mosaic of the Last Judgement in Prague) or XRF and/or LIBS (in the case of the Malbork's Madonna). Materials research of mediaeval mosaics in northern Poland helped to answer the question of their origin. The composition of the glass batch and other additives is closer to German/Prussian productions than to Bohemian ones.
ER  -

POSPÍŠILOVÁ, Eva, David HRADIL, Dana ROHANOVÁ, Karel NOVOTNÝ a Janka HRADILOVÁ. Laser-induced breakdown spectroscopy in the study of degraded glass mosaics. In \textit{6th Interdisciplinary ALMA Conference \&{} 2nd CrysAS workshop}. 2017.

Podrobný výpis o publikaci