Figure 1

Raman spectra of standard pigment lead tin yellow type I. Raman spectra of lead tin yellow type I and minium in the range of 50–2000 cm⁻¹ with two details of spectra variation observed in the region 50–600 cm⁻¹: 1a) and 1b) lead tin yellow type I (Böke & Fritz Art.No.101-7); 1c) minium (Kremer No. 42500). Fourth picture from above: Raman spectra of all pigments in the region of 160–600 cm⁻¹, in the spectrum 2b higher Raman band at 547 cm⁻¹ is visible; last picture: Raman spectra of all pigments in the region of 40–260 cm⁻¹, in the spectrum 2b broadening of the Raman band around 131 cm-1 is showed with the arrow.