Nondestructive analysis and dating of historical paper based on IR spectroscopy and chemometric data evaluation.
Sampling restrictions in analysis of cultural heritage materials narrow the choice of appropriate analytical methods considerably. In this work, near- and mid-FT-IR reflectance data were related to paper properties determined with classical analytical methods using partial least-squares. Nondestructive determination of properties, which are of importance for evaluation of the long-term stability of historical paper, i.e., ash content, lignin content, degree of polymerization of cellulose, pH, and aluminum content, is possible. With the use of a considerable sample set, satisfactory reliability was achieved for all properties but aluminum content. Considering that with age, chemical properties of paper change, dating of historical documents was attempted for the first time, also with success.
Trafela
Tanja
T
University of Ljubljana, Faculty of Chemistry and Chemical Technology, Askerceva 5, SI-1000 Ljubljana, Slovenia.
Strlic
Matija
M
Kolar
Jana
J
Lichtblau
Dirk A
DA
Anders
Manfred
M
Mencigar
Danijela Pucko
DP
Pihlar
Boris
B