Hyperspectral approach for the assessment of biocide treatments on archeological walls

In this study, a prototypal hyper-spectral imaging device was used in combination with ASD FieldSpec spectrometer for evaluating the efficacy and durability of a biocide treatment applied on selected areas covered mainly by lichens of a wall of Macellum, in Pompeii. These techniques were used for monitor the phototrophs health for a period of 7 months. The results were compared to bioluminescence measurements of the ATP, used as reference. The spectra showed significant characteristic signals of photosynthetic pigments and fresh organic matter (lignin, starch, cellulose, pectin).