Skip to main content

Table 2 A total of 80 emission and 80 excitation spectra on 18 brazilwood paints were collected from 8 illuminated manuscripts produced during the 13th—15th c. Based on their spectral features these spectra were assembled in 3 groups

From: Organic colorants based on lac dye and brazilwood as markers for a chronology and geography of medieval scriptoria: a chemometrics approach

  Group BW 1 Group BW 2 Group BW 3
Excitation maxima 552–561 nm 555–562 nm 553–564 nm
Intensity
 Max 2.2 × 105 3.2 × 105 1.7 × 105
 Min 9.1 × 104 1.0 × 105 9.9 × 104
Emission maxima 582–586 nm 594–602 nm 590–600 nm
Intensity
 Max 9.5 × 104 8.6 × 104 6.2 × 104
 Min 3.5 × 104 3.0 × 104 2.4 × 104
Infrared CaCO3
Lead White
CaCO3
CaSO4·2H2O
CaCO3
» CaSO4·2H2O
Reconstruction LKFK 8   LKFK 9
  1. The values for the emission and excitation maxima are in italics