The combined PIXE-PIGE method was used for the analysis of 43 glass fragments from the archaeological site Tonovcov grad in western Slovenia, with 10 of these additionally being analysed by LA-ICP-MS. The glass objects were attributed to the Late Antique production of the 4th-7th c. AD, with two examples of early Roman glass and three glass beads, one of them presumably of oriental origin. The analysis showed typical natron-type glass, produced in the Levantine region around the river Belus, and a few examples of HIMT glass, which could be recognized also in several other recycled objects. Only one glass bead, found in Early Medieval context, was made of the ash of halophytic plants.

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Fifteen samples of medieval glazed pottery from Drastar (present day Silistra), Bulgaria, dated between 10 th and 18 th centuries AD were studied. he element concentration of the glazes was determined by Proton Induced X-ray Emission (PIXE) and Proton Induced Gamma Emission (PIGE) analysis. he composition of the clay bodies was studied by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) after pelletization of the powdered clay. In addition, Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDX) was used for characterization of the clay bodies. After subtraction of the PbO and CuO content, the comparison between the compositions of the clay bodies and the glazes revealed that both the calcareous and the non-calcareous samples were glazed using a lead oxide based preparation followed by iring in oxidizing atmosphere. Furthermore, it was shown that iron, copper and manganese oxides were used to achieve the desired colors. Résumé : Quinze échantillons de céramiques glaçurées médiévales de Drastar (aujourd'hui Silistra), en Bulgarie, datés entre les X e et XVIII e siècles après J.-C. ont été étudiés. Les compositions élémentaires des glaçures ont été déterminées par les méthodes analytiques : émission de rayons X induite par protons (PIXE) et émission de rayons gamma induite par protons (PIGE). La composition de la matrice argileuse a été étudiée par spectrométrie de masse á plasma inductif avec ablation laser (LA-ICP-MS) sur pastilles des poudres d'argiles. En complément, la microscopie électronique à balayage couplée á la spectroscopie X en dispersion d'énergie (SEM-EDX) a été aussi utilisée pour la caractérisation des matrices argileuses. Après soustraction des teneurs en PbO et CuO, la comparaison entre les compositions des matrices et celles des glaçures a révélé que tous les échantillons (pâtes calcaires et non calcaires) ont été glaçurés en utilisant de l'oxyde de plomb suivi d'une cuisson en atmosphère oxydante. De plus, il a été montré que le fer, le cuivre et les oxydes de manganèse ont été utilisés pour obtenir les couleurs souhaitées.