Interaction of historical lead glazes with corrosive media
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F21%3A00552001" target="_blank" >RIV/67985891:_____/21:00552001 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/60461373:22310/21:43922284 RIV/60461373:22810/21:43922284
Výsledek na webu
<a href="https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1439" target="_blank" >https://www.ceramics-silikaty.cz/index.php?page=cs_detail_doi&id=1439</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.13168/cs.2021.0045" target="_blank" >10.13168/cs.2021.0045</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Interaction of historical lead glazes with corrosive media
Popis výsledku v původním jazyce
Lead glasses and glazes are often discussed in terms of degradation processes in connection with their wide use in the field of cultural heritage in historical objects of low-fired glazed ceramics and historical glasses. This work is focused on the evaluation of the interaction of lead glazes with a corrosive media simulating environment of waste pits, deposits and possibly inappropriate conservation interventions. The first part of the experiment contains surface characterisation of several archaeological fragments of glazed ceramics. Two model lead silicate fritted glazes for corrosion tests were prepared based on their compositions. A system based on nitric acid solution simulates nitrates in the soil that surround the archaeological finds, and the aqueous solution of acetic acid represents corrosion in complex organic acids and humic acids. The concentration of Pb and Si was determined in corrosive solution by AAS. Precipitates were identified by optical microscopy (OM) and were examined via XRD and SEM-EDS analyses. Vibrational spectroscopy (ATR, Raman) proved that the proportion of Pb representing a function of network former decreases with time. The shift to higher wavelengths indicates a change in Q motifs in the glass structure of the glaze frits or a glass network transition from a Si-O-Pb-O-Si towards a Si-O-Si glass network.nn
Název v anglickém jazyce
Interaction of historical lead glazes with corrosive media
Popis výsledku anglicky
Lead glasses and glazes are often discussed in terms of degradation processes in connection with their wide use in the field of cultural heritage in historical objects of low-fired glazed ceramics and historical glasses. This work is focused on the evaluation of the interaction of lead glazes with a corrosive media simulating environment of waste pits, deposits and possibly inappropriate conservation interventions. The first part of the experiment contains surface characterisation of several archaeological fragments of glazed ceramics. Two model lead silicate fritted glazes for corrosion tests were prepared based on their compositions. A system based on nitric acid solution simulates nitrates in the soil that surround the archaeological finds, and the aqueous solution of acetic acid represents corrosion in complex organic acids and humic acids. The concentration of Pb and Si was determined in corrosive solution by AAS. Precipitates were identified by optical microscopy (OM) and were examined via XRD and SEM-EDS analyses. Vibrational spectroscopy (ATR, Raman) proved that the proportion of Pb representing a function of network former decreases with time. The shift to higher wavelengths indicates a change in Q motifs in the glass structure of the glaze frits or a glass network transition from a Si-O-Pb-O-Si towards a Si-O-Si glass network.nn
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
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OECD FORD obor
20504 - Ceramics
Návaznosti výsledku
Projekt
<a href="/cs/project/DG18P02OVV028" target="_blank" >DG18P02OVV028: Technologie ošetření a identifikace degradačních procesů keramických nálezů z hradčanských paláců - Metody restaurování a konzervování pórovité i slinuté keramiky a porcelánu</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Ceramics - Silikáty
ISSN
0862-5468
e-ISSN
1804-5847
Svazek periodika
65
Číslo periodika v rámci svazku
4
Stát vydavatele periodika
CZ - Česká republika
Počet stran výsledku
10
Strana od-do
417-426
Kód UT WoS článku
000745121700013
EID výsledku v databázi Scopus
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