Forty five ceramic shards discovered in archaeological excavations at Castellum 22 site, Constanţa County, southeastern Romania, and dated to the 10th–11th centuries AD, were subjected to scientific investigations in order to get clues about the raw materials and manufacturing techniques employed by the potters from the Lower Danube zone at the end of the 1st millennium AD.

The analyzed shards were selected according to archaeological criteria. The characteristics of the fabric, such as texture, porosity and microstructure, as well as the surface treatments and firing conditions, were studied using Optical Microscopy (OM).

Chemical composition was determined using Particle-Induced X-ray Emission (PIXE) technique at AN2000 accelerator of LNL, INFN, Italy. Principal Component Analysis (PCA) of the PIXE data for the ceramic bodies highlighted two main groups of shards with distinct compositional signatures.

Micro-PIXE maps of the interfaces between the olive green or yellow glaze and the underlying ceramic body indicated that the decorative layers are strongly enriched in lead.

The results of these investigations were compared to the ones previously obtained on coeval pottery from other archaeological sites, such as Hârşova, Oltina, Păcuiul lui Soare, and Valu lui Traian, in a trial to get some insights about the life and customs of the people from the Lower Danube region during the Byzantine period.

在罗马尼亚东南部康斯坦察县Castellum 22遗址的考古发掘中发现的四十五个陶瓷碎片，可追溯到公元10-11世纪，经过科学调查，以了解陶工使用的原材料和制造技术的线索。在公元1世纪末从下多瑙河地区进入。

根据考古标准选择分析的碎片。使用光学显微镜（OM）研究了织物的特性，例如质地，孔隙率和微结构，以及表面处理和烧结条件。

化学成分是在意大利INFN的LNL AN2000加速器上使用粒子诱导X射线发射（PIXE）技术确定的。陶瓷体的PIXE数据的主成分分析（PCA）突出显示了具有不同成分特征的两大主要碎片。

橄榄绿色或黄色釉料与下面的陶瓷体之间的界面的Micro-PIXE贴图表明，装饰层中的铅含量很高。

将这些调查的结果与先前从其他考古遗址（例如Hârova，Oltina，Păcuiullui Soare和Valu lui Traian）从其他考古遗址获得的陶器进行了比较，以期对人们的生活和习俗有一些见解。在拜占庭时期来自下多瑙河地区。