Intrinsic limits of reflectance spectroscopy in identifying pigments in paint layers

Florence Heri-Tech - The Future of Heritage Science and Technologies

Pronti, L.^1 ; Pelagotti, A.^2 ; Uccheddu, F.^3 ; Massini Rosati, L.^1 ; Felici, A.C.^1

Department of Basic and Applied Sciences for Engineering, LANDA-Laboratory of Non Destructive Analysis and Archaeometry, University of Rome Sapienza, via A. Scarpa 16, Rome

00161, Italy^1

National Institute of Optics (INO), CNR, L.go E. Fermi 6, Firenze

50125, Italy^2

Departiment of Industrial Engineering, University of Florence, via Santa Marta 3, Firenze

50123, Italy^3

关键词: Intrinsic limit;    Paint layers;    Painted artworks;    Painting surface;    Pigment mixtures;    Real case;    Reflectance spectroscopy;    Test samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/364/1/012061/pdf
DOI  :  10.1088/1757-899X/364/1/012061

来源: IOP

【 摘 要 】

The study of pigments is of fundamental importance for authentication and restoration purposes of painted artworks. To this aim reflectance spectroscopy has been widely studied on samples and in a number of real cases. A number of valuable efforts have been dedicated to this quest; however, the identification of a pigment on a painting surface by means of reflectance spectroscopy appears to be possible only in very few cases also due to the fact that artist materials are often mixed. In this paper we review a number of relevant works and present results on a new set of test samples especially produced for exploring the possibilities of reflectance spectroscopy on pigment mixtures. We also include a case study of a real painting.