Fig. 1From: Van Gogh’s Irises and Roses: the contribution of chemical analyses and imaging to the assessment of color changes in the red lake pigments Irises, 1890 (MMA#58.187), Vincent van Gogh. Gift of Adele R. Levy, 1958. The arrows show the approximate locations where microsamples for cross-section analysis were removed from (a); Pb (b), Zn (c), Co (d), and Br (e) distribution maps acquired by XRF imagingBack to article page