Figure 4

Cross section SEM image of sample T3 (A) and T5 (B). The punctual EDX analyses performed on primer show in both of cases the same elemental composition, ascribable to the presence of lead white pigment.

Cross section SEM image of sample T3 (A) and T5 (B). The punctual EDX analyses performed on primer show in both of cases the same elemental composition, ascribable to the presence of lead white pigment.