Dipartimento di Chimica, Università di Roma "Sapienza", Piazzale Aldo Moro 5, 00185 Rome, Italy.
Talanta. 2014 Jan;118:195-200. doi: 10.1016/j.talanta.2013.09.060. Epub 2013 Oct 19.
The application of Fourier Transform InfraRed (FTIR) spectroscopy to the analysis of oil residues in fragments of archeological amphorae (3rd century A.D.) from Monte Testaccio (Rome, Italy) is reported. In order to check the possibility to reveal the presence of oil residues in archeological pottery using microinvasive and\or not invasive techniques, different approaches have been followed: firstly, FTIR spectroscopy was used to study oil residues extracted from roman amphorae. Secondly, the presence of oil residues was ascertained analyzing microamounts of archeological fragments with the Diffuse Reflectance Infrared Spectroscopy (DRIFT). Finally, the external reflection analysis of the ancient shards was performed without preliminary treatments evidencing the possibility to detect oil traces through the observation of the most intense features of its spectrum. Incidentally, the existence of carboxylate salts of fatty acids was also observed in DRIFT and Reflectance spectra of archeological samples supporting the roman habit of spreading lime over the spoil heaps. The data collected in all steps were always compared with results obtained on purposely made replicas.
本文报道了傅里叶变换红外（FTIR）光谱法在分析来自意大利罗马蒙特·特斯塔乔（Monte Testaccio）的 3 世纪考古双耳瓶碎片中油残留物的应用。为了检查使用微侵入和/或非侵入技术是否可以揭示考古陶器中油残留物的存在，我们采用了不同的方法：首先，我们使用 FTIR 光谱法研究了从罗马双耳瓶中提取的油残留物。其次，通过漫反射红外光谱法（DRIFT）分析微量考古碎片来确定油残留物的存在。最后，对古代碎片进行外部反射分析，无需进行预处理，证明通过观察其光谱的最强特征，可以检测到油迹。顺便说一句，在 DRIFT 和考古样本的反射光谱中也观察到了脂肪酸的羧酸盐，这支持了罗马人在堆肥上撒石灰的习惯。所有步骤中收集的数据始终与在特制复制品上获得的结果进行比较。
