Micro sample from site GLL001
To conduct the characterization of paints, a multi-instrumentation protocol has been developedto analyse unprepared, prepared and cross-section samples using microscopy, Raman spectroscopy,scanning electron microscopy coupled with X-ray energy dispersive spectrometer (SEM-EDS),and Fourier transform infrared (FTIR) spectroscopy (Bonneau et al 2017: 663). Each sample is splitinto two parts; one is left unprepared and the other embedded in an epoxy resin and polished insection to reveal the succession of layers (Bonneau et al 2021). Both samples are observed with alight microscope and scanning electron microscope (SEM; Bonneau et al 2021).
