Characterization of residues found within some Roman unguentaria glass artefacts: preliminary results of a multi-disciplinary approach

Despite the large number of unguentaria vessels generally discovered in Roman archeological sites, very little information is available concerning nature and chemical composition products that were originally contained within these artifacts. In this study a combined non-destructive approach included Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy X-ray fluorescence was used for characterization some brownish-black residues preserved series glass recovered from excavations at baths Mălăiești. The obtained results highlighted presence different inorganic substances (an earth-based pigment rich iron manganese oxides, admixed with traces lead- mercury-based compounds) impregnated an organic binder such as animal glue possible natural essential oils, powdered product associated most probably cosmetic/pharmacological use. allowed first insight into origin ancient remains, providing important clues may help to understand original function vessels.