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Aceto, M., Agostino, A., Fenoglio, G., Idone, A., Gulmini, M., Picollo, M., Ricciardi, P. & Delaney, J. K. (2014) Characterisation of colourants on illuminated manuscripts by portable fibre optic UV-visible-NIR reflectance spectrophotometry. Anal. Methods, 6 1488–1500. 
Added by: Sarina (14 Sep 2015 07:28:55 UTC)   
Resource type: Journal Article
DOI: 10.1039/C3AY41904E
BibTeX citation key: Aceto2014
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Categories: Englisch = English
Creators: Aceto, Agostino, Delaney, Fenoglio, Gulmini, Idone, Picollo, Ricciardi
Collection: Anal. Methods
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The use of ultraviolet and visible diffuse reflectance spectrophotometry as a preliminary technique in the investigation of illuminated manuscripts is discussed. Because ancient manuscripts are amongst the most fragile and precious artworks{,} characterisation of the materials used in their decoration should be performed using non-invasive analytical methods. Ultraviolet and visible reflectance spectrophotometry with optical fibres (FORS) allows non-invasive identification of several colourants used by ancient illuminators{,} causing no damage or mechanical stress to the artworks subjected to analysis. Identification is usually based on the comparison of analytical data with a spectral database built from painted areas on parchment{,} created by preparing paints according to ancient recipes as described in medieval technical treatises. Such database and the spectral features of the colourants analysed are discussed{,} along with the benefits of extending the spectral range of analysis into the shortwave infrared (to 2500 nm). FORS can be best appreciated as a rapid preliminary tool that offers an overview on the main colourants employed and guides the selection of painted areas of manuscripts on which more selective techniques{,} such as X-ray fluorescence or Raman spectroscopy{,} can be employed for a more complete and accurate identification.
Added by: Sarina  
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