Fig. 13From: Electrochemical assessment of pigments-binding medium interactions in oil paint deterioration: a case study on indigo and Prussian blueSquare wave voltammograms, after semi-derivative convolution, of sample-modified graphite electrodes in contact with air-saturated 0.25 M HAc/NaAc aqueous buffer at pH 4.75. a 50% wt indigo plus Prussian blue mixture before (green) and after being naturally aged (red) and after accelerated UVA aging (black); b indigo plus Prussian blue paint film specimens before (green) and after being naturally aged (red) and after accelerated UVA aging (black). Voltammograms in conditions such as in Fig. 12Back to article page