Microanalysis of clay-based pigments in painted artworks by the means of Raman spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461446%3A52810%2F13%3A%230000134" target="_blank" >RIV/60461446:52810/13:#0000134 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1002/jrs.4381/abstract" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/jrs.4381/abstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jrs.4381" target="_blank" >10.1002/jrs.4381</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microanalysis of clay-based pigments in painted artworks by the means of Raman spectroscopy

Popis výsledku v původním jazyce

FT Raman spectroscopy and micro-Raman spectroscopy with lasers of three different wavelengths (1064 nm, 785nm and 532 nm) were used for analysis of reference samples of natural clay pigments including white clay minerals (kaolinite, illite, montmorillonite), green earths (glauconite and celadonite) and red earths (natural mixtures of white clay minerals with hematite). In addition, eight micro-samples obtained from historical paintings containing clay pigments in ground and colour layers have been examined. Powder X-ray diffraction and micro-diffraction were used as supplementary methods. It was found that laser operating at 1064nm provided the best quality Raman spectra for distinguishing different white clay minerals, but the spectra of green and redearths were affected by strong fluorescence caused by the presence of iron. Green earth minerals could be easily distinguished by 532 or 785nm excitation lasers, even in small concentrations in the paint layers. On the other hand, when a

Název v anglickém jazyce

Microanalysis of clay-based pigments in painted artworks by the means of Raman spectroscopy

Popis výsledku anglicky

FT Raman spectroscopy and micro-Raman spectroscopy with lasers of three different wavelengths (1064 nm, 785nm and 532 nm) were used for analysis of reference samples of natural clay pigments including white clay minerals (kaolinite, illite, montmorillonite), green earths (glauconite and celadonite) and red earths (natural mixtures of white clay minerals with hematite). In addition, eight micro-samples obtained from historical paintings containing clay pigments in ground and colour layers have been examined. Powder X-ray diffraction and micro-diffraction were used as supplementary methods. It was found that laser operating at 1064nm provided the best quality Raman spectra for distinguishing different white clay minerals, but the spectra of green and redearths were affected by strong fluorescence caused by the presence of iron. Green earth minerals could be easily distinguished by 532 or 785nm excitation lasers, even in small concentrations in the paint layers. On the other hand, when a

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/DF12P01OVV048" target="_blank" >DF12P01OVV048: Nová mobilní zařízení, laboratoř a metodika pro nedestruktivní materiálovou analýzu výtvarného umění v kontextu ochrany kulturního dědictví</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Raman Spectroscopy

ISSN

1097-4555

e-ISSN

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Svazek periodika

44

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

1570-1577

Kód UT WoS článku

000330107900015

EID výsledku v databázi Scopus

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