Secondary phosphates in the ceramic materials from Frattesina (Rovigo, North-Eastern Italy)

Tableware in the Hellenistic Tradition from the City of Kampyr Tepe in Ancient Bactria (Uzbekistan)

“…These perturbations are common in pottery deposited in anthropized environments such as cultivated areas or in contact with burials (Maritan and Mazzoli ; Maritan et al . ). The Pb content is particularly high in sample KPT‐40, whereas Cu varies from 17 to 40 ppm among the sherds (Table (a)), leading to a relatively high variability.…”

“…The reason for the phosphorus enrichment might be post‐depositional contamination in the soil, such as by agricultural fertilizers, as suggested by the chemical analysis of a few pottery pastes (Maritan and Mazzoli ; Maritan et al . ), even though intentional mixing of the slip with bone ash can also be considered. Differences in the Na 2 O and Cl 2 O contents between the surface and the ceramic body were recognized in samples KPT‐5, ‐10, ‐12, ‐19 and ‐44.…”

Ceramics from the Alcazar Palace in Seville (Spain) dated between the 11th and 15th centuries: Compositions, technological features and degradation processes

“…It is generally assumed that the accumulation of phosphates is the consequence of a contamination connected to the product of funerary or other human activities [34], although there are disagreements concerning whether the mechanism is adsorption of anions on the inner surface of the ceramics or chemical precipitation from a solution [35]. Some authors warned that the formation of secondary phosphates in ceramics could occur from both exogenous and endogenous phosphorus [24,36].…”

“…In the internal part of some glazes studied in this work, especially near the ceramic body, the presence of P and Ca was observed. This fact suggests that this phosphate was added by the potter [24,36,88].…”

The forest or the trees? Behavioral and methodological considerations for geochemical characterization of heavily-tempered ceramic pastes using NAA and LA-ICP-MS

“…However, firing temperature, atmosphere, and the speed at which temperatures ramp up will affect the mineral structure of the pot that can be seen through mineralogical techniques (Maritan et al, 2006). In addition to these behavioral variables, discard, use, and post-depositional processes can have an impact on pottery chemistry that are rarely considered (with some notable exceptions: e.g., Neff et al, 2003;Maritan et al, 2009;Schwedt et al, 2004).…”