Reference : Fading of modern Prussian blue pigments in linseed oil medium
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/94806
Fading of modern Prussian blue pigments in linseed oil medium
English
Samain, Louise mailto [Université de Liège - ULg > > Centre européen en archéométrie >]
Silversmit, Geert mailto [Universiteit Gent - Ugent > Chemistry > X-ray Microspectroscopy and Imaging > >]
Sanyova, Jana mailto [Institut Royal du Patrimoine Artistique - IRPA > > > >]
Vekemans, Bart mailto [Universiteit Gent - Ugent > Chemistry > X-ray Microspectroscopy and Imaging > >]
Salomon, Hélène mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
Gilbert, Bernard mailto [Université de Liège - ULg > Département de chimie (sciences) > Département de chimie (sciences) >]
Grandjean, Fernande mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Long, Gary J. mailto [University of Missouri - MU > Chemistry > > >]
Hermann, Raphaël mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Vincze, Laszlo mailto [Universiteit Gent - Ugent > Chemistry > X-ray Microspectroscopy and Imaging > >]
Strivay, David mailto [Université de Liège - ULg > Département de physique > Physique nucléaire, atomique et spectroscopie >]
2011
Journal of Analytical Atomic Spectrometry [=JAAS]
Royal Society of Chemistry
26
5
930
Yes (verified by ORBi)
International
0267-9477
Cambridge
United Kingdom
[en] Prussian blue ; Pigments ; Light fastness
[en] The fading of modern laboratory-synthesized and commercial Prussian blue, iron(III) hexacyanoferrate(II), based pigments in a linseed oil medium during exposure to light has been investigated. The Prussian blue pigments were painted from linseed oil, as a pure pigment and mixed with white lead, (PbCO3)2Pb(OH)2, zinc white, ZnO, or titanium white, TiO2, pigment. The samples were subjected to accelerated ageing for 800 hours and the light fastness of the Prussian blue pigment was evaluated by reference to blue wool standards. Pure Prussian blue is extremely light fast whilst it strongly fades when mixed with a white pigment, especially with lead white or zinc oxide. The painted samples were studied by UV-visible, iron K-edge X-ray absorption, iron-57 transmission Mössbauer, and attenuated total reflectance infrared spectroscopy. X-ray absorption results reveal a decrease in the iron coordination number in aged samples in the presence of white pigment. The Mössbauer spectra of the pure Prussian blue and the unaged and aged mixtures of Prussian blue and lead white or zinc oxide at 1:100 and 1:10 dilution ratios, respectively, indicate the presence of iron(II) and iron(III) in a ratio close to one as expected for the bulk stoichiometric KFeIII[FeII(CN)6]; no change in the spectral parameters was observed upon ageing. Combined with the X-ray near edge absorption and infrared studies, these results suggest reduction of the surface iron ions in the Prussian blue with ageing upon exposure to light.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Fonds Wetenschappelijk Onderzoek - FWO ; Politique Scientifique Fédérale (Belgique) = Belgian Federal Science Policy
Researchers
http://hdl.handle.net/2268/94806
10.1039/C0JA00234H

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