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Table 2 Amount of calcite estimated by FT-IR and percentage of painting components evaluated in each Pompeian’s painting samples

From: An enhanced procedure for the analysis of organic binders in Pompeian’s wall paintings from Insula Occidentalis

Paint samples Amount of paint powder weighed (μg/spot) True paint (%) Calcite (%) Oxalate peak area/μg (780 cm−1) Organic material (AA + FA) (%) Pigment + other organic material + decay compounds (%)
7.5 15 30
Amount of calcite measured in the paint powder (μg)
S1 5.71 6.95 61.8 38.20 61.8 0.52 0.88 37.32
S2 5.67 8.87 60.3 39.70 60.3 0.66 0.37 39.33
S3 5.27 9.73 59,0 41.0 59,0 0.68 0.31 40.69
S4 4.89 7.07 58.2 41.80 58.2 0.44 0.24 41.56
S5 2.95 10.77 56.0 44.0 56.0 0.57 0.73 43.27
Average 4.90 8.68 59.06 40.94 59.06 0.57 0.506 40.42
SD 1.14 1.66 2.19 2.19 2.19 0.099 0.28 2.25
CV% 23.25 19.18 3.70 5.34 3.70 17.31 55.69 5.57
  1. AA amino acids, FA fatty acids