Figure 4From: Spectroscopic techniques and the conservation of artists’ acrylic emulsion paintsXPS of Surfactant Migration. XP C1s (A) and O1s (B) spectra of Talens PY3 yellow films before (‘as prepared’) and after (‘aged’) two years of natural ageing in the dark under ambient conditions compared to a spectrum of Triton™ X-405.Back to article page