Application of analytical methods for classification of archaelogical samples from antique production centre in Crikvenica
| Autor: | Zubin Ferri, Tea |
|---|---|
| Přispěvatelé: | Rončević, Sanda |
| Jazyk: | chorvatština |
| Rok vydání: | 2020 |
| Předmět: |
kemometrijska klasifikacija
Fourier transform infrared spectroscopy PRIRODNE ZNANOSTI. Kemija chemometric classification arheološke keramike elementni sastav post-depozicijske promjene SEM FT-IR PCA NATURAL SCIENCES. Chemistry archaeological ceramics arheološka keramika energy dispersive spectroscopy energijsko disperzivna spektroskopija udc:54(043.3) Kemija. Kristalografija. Mineralogija skenirajuća elektronska mikroskopija infracrvena spektroskopija u Fourierovoj transformaciji scanning electron microscopy Chemistry. Crystallography. Mineralogy |
| Popis: | Klasifikacija i usporedba arheoloških keramika iznimno su zahtjevni postupci, čak i u slučajevima kada je poznato porijeklo ovakvih pronalazaka. Različiti uvjeti pohrane i obrade uzoraka keramike nakon arheoloških iskapanja mogu rezultirati zamjetnim fizikalno-kemijskim promjenama u samim uzorcima i time znatno otežati postupak klasifikacije. Kombinacija naprednih analitičkih metoda za određivanje kemijskog sastava i morfologije te multivarijatnih statističkih metoda osigurava prepoznavanje ovih procesa i pomaže u razlikovanju međusobno sličnih uzoraka. U ovom radu istražene su razlike u kemijskom sastavu keramičkih fragmenata proizvedenih u antičkoj radionici u Crikvenici, Republika Hrvatska. Analitičke metode SEM-EDS, FT-IR, ICP-MS primijenjene su u karakterizaciji sastava i post-depozicijskih promjena u kopnenim i podmorskim pronalascima. Kemometrijska obrada rezultata elementnog sastava dobivenog metodom ICP-MS te obrada rezultata dobivenih metodom FT-IR, temeljila se na univarijatnim i multivarijatnim testovima. Analiza glavnih komponenti (PCA) rezultirala je jasnim razlikovanjem glavnih skupina uzoraka kao što su kopneni, podmorski i desalinizirani uzorci keramike. Postojanje podskupine desalinizirane keramike utvrđeno je prema promjenama omjera sadržaja akumuliranih elemenata. Rimska keramika iskapana na području antičke radionice u Crikvenici karakterizirana je kao referentna skupina. Rezultati pokazuju da je sadržaj elemenata Ho, Ce, La, Lu, Tb, Gd, Eu i Sm najmanje podložan post-depozicijskim promjenama unutar definirane referentne skupine keramike. Classification and comparison of archaeological ceramics are extremely challenging procedures, even when the origin of such finds is known. Different storage and processing conditions of ceramics samples after archaeological excavations can result in notable physicochemical changes in the samples and thus significantly complicate the classification process. The combination of advanced analytical methods for determining chemical composition and morphology along with multivariate statistical methods ensures the recognition of these processes and helps in distinguishomg similar patterns. In this work, the differences in the chemical composition of ceramic fragments produced in the ancient workshop in Crikvenica, Republic of Croatia, were studied. The analytical methods SEM/EDS, FT-IR, ICP-MS were applied in characterization of the composition and post-depositional changes in land and submarine finds. Chemometric processing of the results of the elemental composition obtained by the ICP-MS method and the processing of the results obtained by the FT-IR method were based on univariate and multivariate tests. Principal Component Analysis (PCA) resulted in the clear distinction between major groups of samples such as land, submarine and desalinated ceramics finds. The existence of a subgroup of desalinated ceramics was defined on the basis of changes in the concentration ration of the accumulated elements. The pottery, which was excavated in the area of the Roman workshop in Crikvenica is characterized as the reference group. The results show that the content of the elements Ho, Ce, La, Lu, Tb, Gd, Eu and Sm is the least receptive to postdepositional changes within the defined reference group. |
| Databáze: | OpenAIRE |
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