Simultaneous identification of historical pigments Prussian blue and indigo in paintings by electrospray mass spectrometry

0397506 - MBÚ 2014 RIV GB eng J - Článek v odborném periodiku
Pauk, V. - Havlíček, Vladimír - Papoušková, B. - Sulovský, P. - Lemr, Karel
Simultaneous identification of historical pigments Prussian blue and indigo in paintings by electrospray mass spectrometry.
Journal of Mass Spectrometry. Roč. 48, č. 8 (2013), s. 927-930. ISSN 1076-5174. E-ISSN 1096-9888
Grant CEP: GA ČR(CZ) GAP206/12/1150
Institucionální podpora: RVO:61388971
Klíčová slova: mass spectrometry * electrospray * historical painting
Kód oboru RIV: CE - Biochemie
Impakt faktor: 2.709, rok: 2013

A new analytical protocol for identification of Prussian blue (PB) and indigo was proposed. Pigments useful for dating of artworks were detected by flow injection analysis/electrospray ionization mass spectrometry after alkalization of their suspensions in water, decomposition of PB to iron (III) hydroxide and hexacyanoferrate (II) and reduction of indigo to soluble leucoindigo using sodium dithionite. Limits of detection (PB 47 pg, indigo 59 pg) complied with requirements for analysis of microsamples of historical paintings. Potential of the developed method was proven in analysis of blue samples of two oil paintings from the 20th century. Further, PB was confirmed in a microsample from a painting of ‘Crucifixion’, St. Sebestian church on St. Hill in Mikulov, Czech Republic
Trvalý link: http://hdl.handle.net/11104/0225150