Určení provenience jílových pigmentů

0375814 - ÚACH 2012 RIV CZ cze C - Konferenční příspěvek (zahraniční konf.)
Švarcová, Silvie - Bezdička, Petr - Hradil, David - Žižak, I.
Určení provenience jílových pigmentů.
[Determination of clay pigment provenance rased on crystal structure characterisation.]
ACTA ARTIS ACADEMICA 2010: THE STORY OF ART - ARTWORK CHANGES IN TIME. Praha: Akademie výtvarných umění v Praze, 2010, s. 303-308. ISBN 978-80-87108-14-7.
[Interdisciplinary Conference of Academic-Materials-Research-Laboratory-of-Painted-Artworks /3./. Praha (CZ), 24.11.2010-25.11.2010]
Výzkumný záměr: CEZ:AV0Z40320502
Klíčová slova: index * paintings
Kód oboru RIV: CA - Anorganická chemie

Přínos rentgenových difrakčních technik pro materiálovou analýzu malířských děl lze spatřovat v několika směrech.

Application of X-ray diffraction techniques (XRD) in material analysis of artworks is beneficial in several aspects. Primarily it provides indisputable identification of crystal components found in colour layers, further it makes quantification of identified phases possible and last but not least it can also bring insight in material crystal structure. The crystal structure of materials is often affected by conditions which have been formed under, e.g. geological genesis, manufacturing procedure or secondary changes for example resulted from corrosive action of environment. The knowledge of the relation between the crystal structure of the material and its formation can be useful not only for art historic evaluation of the artwork but also for the artwork restoration and/or conservation. Within the example of clay mineral kaolinite, we show that its crystal order evaluation (based on XRD) can serve well to find its natural origin. We found kaolinite, the main component of kaolin (white earth), in a preparation layer of a Gothic wall painting in St. Maria-Magdalena Church in Bor near Karlovy Vary, where important kaolin deposits are situated. Comparing eight reference kaolins, we demonstrated that these can be differentiated just according to the kaolinite crystallinity (crystal structure ordering). Within this study we compared laboratory powder X-ray micro-diffraction (micro-XRD) with synchrotron radiation X-ray diffraction (SR-XRD). We found that both techniques led to the same results.
Trvalý link: http://hdl.handle.net/11104/0208375