Scopus
YÖKSİS Eşleşti
An in-depth chemometric study: Archaeometric characterization of ceramic shards excavated from the sanctuary of Hecate at Lagina in Muğla (Turkey) by FTIR spectroscopy and multivariate data analysis
Vibrational Spectroscopy · Kasım 2020
YÖKSİS Kayıtları
An in-depth chemometric study: Archaeometric characterization of ceramic shards excavated from the sanctuary of Hecate at Lagina in Muğla (Turkey) by FTIR spectroscopy and multivariate data analysis
Vibrational Spectroscopy · 2020 SCI-Expanded
DOÇENT İSMAİL TARHAN →
An in-depth chemometric study: Archaeometric characterization of ceramic shards excavated from the sanctuary of Hecate at Lagina in Muğla (Turkey) by FTIR spectroscopy and multivariate data analysis
Vibrational Spectroscopy · 2020 SCI-Expanded
DOÇENT İLKER IŞIK →
Makale Bilgileri
DergiVibrational Spectroscopy
Yayın TarihiKasım 2020
Cilt / Sayfa111
Scopus ID2-s2.0-85094316917
Özet
This study describes the feasibility of ATR-FTIR spectroscopy combined with multivariate data analysis for discrimination and estimation of the firing conditions of the shard samples excavated from the sanctuary of Hecate at Lagina. ATR-FTIR spectra of 53 shard samples were collected in the different spectral regions (1700−825, 825−400, 1700−400 cm−1) and the similarities and differences in the samples were assessed in 36 principal component analysis (PCA) models that use normal, first, and second-derivative spectra of the spectral regions. The performance of PCA models developed was evaluated by principal component (PC) percentages, eigen-values, the factor numbers reached, and the number of samples outside of explained variance (95%). It was observed that the PCA model employing normal spectra (825−400 cm-1) with 31 smoothing points has the best statistical results for discriminating against the shards of the sanctuary of Hecate based on their different mineralogical composition. The second-derivative ATR-FTIR spectra (two polynomial degrees and 11 smoothing points of Savitzky-Golay method) in the range of 1700−400 cm-1 was successfully used to determine the mineralogical composition and the firing conditions of the shard samples of the sanctuary of Hecate. The results showed that all shard groups have the characteristics of mica-type (micaceous) clay, mainly contain muscovite, quartz, gypsum, and meta-smectite, but also a remarkable amount of firing mineral such as diopside. The occurrence of appreciable amounts of muscovite, diopside, and hematite suggested that most of the shards have been fired at temperatures about 800 °C, but lower than 950 °C, in the oxidizing atmospheric conditions.
Yazarlar (2)
1
İsmail Tarhan
ORCID: 0000-0003-3353-8635
2
İlker Işık
Anahtar Kelimeler
Discrimination
Firing temperature
FTIR spectroscopy
Mineral characterization
PCA
Pottery
Kurumlar
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
5
Atıf
2
Yazar
6
Anahtar Kelime