Integrated analytical techniques for the study of ancient Greek polychromy.
The materials used in the decoration of three painted astragaloi (knucklebones) from the Koroneia cave (Greece) were investigated by means of sequential application of non-destructive and destructive techniques: optical microscopy, environmental scanning electron microscopy coupled with X-ray microanalysis (ESEM-EDX), Fourier transform infrared spectroscopy (FTIR) with micro-attenuated total reflection (mu-ATR) technique, high performance liquid chromatography (HPLC) coupled with UV-fluorescence and gas chromatography-mass spectrometry (GC-MS) were used. The main results highlighted that the three astragaloi were prepared with a ground of ochre or iron clay and painted with a proteinaceous matter such as binder egg tempera. Both FTIR and GC-MS agree in the detection of lipids that can be related to egg. Organic dyestuffs identified as madder lake and shellfish purple were used together with inorganic pigments.
Colombini
Maria Perla
MP
Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via Risorgimento 35 Pisa, Italy.
Carmignani
Alessia
A
Modugno
Francesca
F
Frezzato
Fabio
F
Olchini
Angela
A
Brecoulaki
Hariclia
H
Vassilopoulou
Vivi
V
Karkanas
Panagiotis
P