Small quantities of Roman mortars and stuccos from the Theatre of Marcellus and Porticus of Octavia were subjected to different instrumental techniques - thermogravimetric analysis (TG, DTG), Inductively Coupled Plasma Emission Spectroscopy ( ICP-AES) and X-ray diffraction (XRD). The instrumental characterisation and chemometries allowed the stucco samples to be easily distinguished from the mortar. In practice, using the three instrumental analytical methods a total of 36 variables were obtained. The variables were then selected using PCA ( Principal Component Analysis), reducing this number to 10. Lastly, using HCA ( Hierarchical Cluster Analysis) a good separation was obtained between the two groups of samples ( mortars and stuccos).
Applications of Instrumental Analysis and Chemometry to Old Roman Mortars and Stuccos / Gatta, Tania; Tomassetti, Mauro; P. C., Rossetto; Grossi, Rossella; Visco, Giovanni; Campanella, Luigi. - In: CURRENT ANALYTICAL CHEMISTRY. - ISSN 1573-4110. - STAMPA. - 6:1(2010), pp. 80-87. [10.2174/157341110790069664]
Applications of Instrumental Analysis and Chemometry to Old Roman Mortars and Stuccos
GATTA, TANIA;TOMASSETTI, Mauro;GROSSI, Rossella;VISCO, GIOVANNI;CAMPANELLA, Luigi
2010
Abstract
Small quantities of Roman mortars and stuccos from the Theatre of Marcellus and Porticus of Octavia were subjected to different instrumental techniques - thermogravimetric analysis (TG, DTG), Inductively Coupled Plasma Emission Spectroscopy ( ICP-AES) and X-ray diffraction (XRD). The instrumental characterisation and chemometries allowed the stucco samples to be easily distinguished from the mortar. In practice, using the three instrumental analytical methods a total of 36 variables were obtained. The variables were then selected using PCA ( Principal Component Analysis), reducing this number to 10. Lastly, using HCA ( Hierarchical Cluster Analysis) a good separation was obtained between the two groups of samples ( mortars and stuccos).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.