Table 4 FTIR results for the paint samples
Sample | Layer | Lipid material | Natural resin | Proteinaceous material | Polysaccharide materials | Inorganic materials |
|---|---|---|---|---|---|---|
VIC 2 | Superficial layers | + | + | - | - | Calcite (CaCO3) Iron oxide Calcium oxalates (CaC2O4) Quartz (SiO2) |
Under metallic leave | + | - | - | Barium sulphate (BaSO4) Chrome yellow (PbCrO4) Metal Carboxylates | ||
VIC 5 | Pigment layers on top | + | - | - | - | strontium yellow (SrCrO4) Prussian blue (Fe[Fe(CN)6]3) Clay (kaolinite) Lead white (2 PbCO3· Pb(OH)2) Calcium oxalates (CaC2O4) Metal Carboxylates |
Preparation | + | - | - | - | Lead white (2 PbCO3· Pb(OH)2) | |
Canvas prep | - | - | - | + | - | |
VIC 7 | Superficial layers | - | + | + | - | - |
Mordent | + | - | - | - | Chrome yellow (PbCrO4) Barium sulfate (BaSO4) | |
Preparation | + | - | - | - | Lead white (2 PbCO3· Pb(OH)2) |