SERS spectrum of red dyes in the Mapuche belts from the beginning of the XXth century
M. M. Campos-Vallette, M. J. Rodríguez, M. A. Chapanoff, E. Clavijo, J. S. Gómez-Jeria, A. E. Aliaga, G. P. Jara, F. Celis, C. Paipa and P. Leyton
Version of Record online: 12 APR 2017 | DOI: 10.1002/jrs.5147
Red dyes in seven belts (trariwe) belonging to the Mapuche culture, dated as beginning of the XXth century and stored in Museo Regional de la Araucanía, Chile, were analysed by using ultraviolet-visible, liquid chromatography coupled to mass spectrometry, Raman and Surface Enhanced Raman Scattering spectroscopies. Red dyes were extracted and characterized; the spectral analysis allowed identifies a commercial synthetic aniline the azopigment PR57 as the principal red dye in five samples. Another monoazopigment, orange benzimidazolone, was identified in two samples.