Selected Area XPS Analysis for Identification of Pigment Compounds in Microscopic Paint Flakes

Table 2

Lead 4 f binding energies, chemical state, and quantification.

Energy (doublet) eV	Chemical state	Relative amount
137.3 (142.0)	PbO or PbS [11]	10.8%
138.3 (143.0)	PbS${\text{O}}_3$ [12]	17.4%
139.3 (144.0)	PbS${\text{O}}_4$ [12]	71.8%