6533b82ffe1ef96bd1295355
RESEARCH PRODUCT
Spectroscopic analysis used to uncover the original paint colour of the Helsinki Government Palace tower clock faces
Maite MagureguiRaili LaaksoJuan Manuel MadariagaUlla KnuutinenUlla KnuutinenSilvia Fdez-ortiz De VallejueloKepa Castrosubject
ArcheologyMaterials scienceconfocal Raman microscopyX-RAY-FLUORESCENCECULTURAL-HERITAGE116 Chemical sciencesX-ray fluorescenceMineralogy02 engineering and technologyConservationengineering.materialFTIR/ATR spectroscopyCONSERVATION STATE01 natural sciencesCROSS-SECTIONSSEM-EDStower clockRAMAN-SPECTROSCOPYWALL PAINTINGSFIELDPaint cross sectionPrimer (paint)IN-SITU010401 analytical chemistryPALEOLITHIC ROCK-PAINTINGSTower clockConfocal Raman microscopypaint cross sectionPIGMENTS021001 nanoscience & nanotechnologykulttuuriperintö0104 chemical sciencesengineeringCultural heritage0210 nano-technologyBlack colourTowerdescription
The paint stratigraphy of the two clock faces from the tower clock of the Government Palace in Helsinki (Finland) was analysed in order to determine their original colour before restoration works. Paint cross-section samples from both clock faces were analysed by confocal Raman microscopy and scanning electron microscopy coupled to an energy dispersive X-ray spectrometer (SEM-EDS). The results revealed the complex superimposition of paint layers applied over the original black colour. FTIR/ATR analyses proved that the original paint was prepared with linseed oil-resin media. Most likely not all of the different layer colours were visible. Some of the layers were likely to have been a primer or for rust protection. Peer reviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-09-22 |