Fig. 8 | Heritage Science

Fig. 8

From: Study of barium copper silicate pigments on painted pottery from the Qinhan Xincheng, Western Han Dynasty (207 B.C.–8 A.D.), Xi’an, Shaanxi province, China

Fig. 8

Visualizing the mapping area and mapping results for different elements. a EPMA mapping area under an optical microscope b EPMA quantification position map of purple sample. The mapping area micro-photo clearly shows the purple pigment and the accompanying clods of soil; the nine points were selected based on the EPMA mapping results. The red boxes represent the CP particles, the blue boxes represent the soil. c–i are EPMA mapping results of the purple sample, featuring seven elements: Al, Si, S, Sn, Cu, Ba, Pb. Blue to red represents the level of element concentration, with blue being lower and red being higher

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