Painting the Palace of Apries II: ancient pigments of the reliefs from the Palace of Apries, Lower Egypt

Heritage Science

Table 3 DCCR calibrated results of the energy dispersive X-ray spectrum of a point analysis ÆIN 1060 of the green paint

Element	Line	Conc./%	Sigma/%	RSD/%
Si	K12	2.4	0.049	2.1
S	K12	0.6	0.005	0.8
Ca	K12	27	0.019	0.1
Ti	K12	0.1	0.001	0.8
Mn	K12	0.01	0.000	3.3
Fe	K12	0.6	0.001	0.2
Cu	K12	2.0	0.001	0.1
Zn	K12	0.03	0.000	1.0
As	K12	0.15	0.001	0.5
Sr	K12	0.2	0.000	0.2
Pb	L1	0.003	0.000	7.4

Conc. is the calibrated concentration of the element in weight %; Sigma is one standard deviation; and RSD is the relative standard deviation expressed in %. The results should be interpreted with some caution because the DCCR calibration is performed with the NIST SRM 610 whose matrix is different from that of the sample. Besides the listed elements there was Cl present, which, however, cannot be properly calibrated