Fig. 7From: Barium, zinc and strontium yellows in late 19th–early 20th century oil paintings a Infrared (inset between 1000 and 700 cm−1) and b Raman spectra of a yellow μ-sample from Marques de Oliveira’s painting À espera dos barcos (estudo), 1891 (Fig. 1 top), compared with the spectra of a CY1a pigment reconstruction; (✚) 4ZnCrO4·K2O·3H2O, ( ) BaCrO4; (✧) zinc carboxylate, (■) 2PbCO3·Pb(OH)2 Back to article page