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Table 5 Average chemical composition of the black particles by SEM/EDS/WDS [expressed as oxides wt%]

From: Gothic green glazed tile from Malbork Castle: multi-analytical study

Compound Al2O3 SiO2 SO3 FeO CuO PbO MgO P2O5 ZnO SnO2 Sb2O3
Average 0.4 1.7 0.1 0.4 97.2 1.1 0.05 0.07 0.05 0.23 0.46
STDEV.P 0.0 0.7 0.0 0.0 0.6 0.0 0.04 0.00 0.00 0.12 0.42
Method EDS EDS EDS EDS EDS EDS WDS WDS WDS WDS WDS
  1. WDS measurements for As, Mg, P, Sn, Sb and Zn