Kiruba S, Ganesan S
Department of Physics, St. Joseph's College of Engineering, Chennai 600119, Tamilnadu, India; Department of Medical Physics, Anna University, Chennai 600025, Tamilnadu, India.
Department of Medical Physics, Anna University, Chennai 600025, Tamilnadu, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2015 Jun 15;145:594-597. doi: 10.1016/j.saa.2015.03.055. Epub 2015 Mar 9.
Ancient ceramics are the abundant artifacts that give the knowledge of the past societies. Therefore it is of great importance to acquire knowledge about the chemical composition of the clay in archaeological artifacts. The spectroscopic techniques represent one of the most powerful tools to investigate the structure of all the materials and chemical composition of the cultural object like potteries. An attempt has been made in the present work to estimate the firing temperature of the archaeological pottery shreds excavated from the archaeological site Poompuhar in the state of Tamilnadu in India. The firing temperature of the archaeological pottery shreds were estimated by recording the corresponding FT-IR spectra in the range 4000-450 cm(-1) and Micro Raman spectra in the range 1800-400 cm(-1). The clay mineral present in the pottery samples are identified through FT-IR method and was confirmed with Micro Raman spectroscopy as both are complement to each other. The major primary mineral present in the samples is Kaolinite and the secondary mineral present is quartz and the accessory minerals present in the samples are hematite, magnetite and feldspar. The results of Raman spectra showed that the potters of this site used a mixture of clays as raw materials. The firing temperature for some of the samples did not exceed 800°C which suggests the use of open fire.
古代陶瓷是丰富的文物，能让我们了解过去的社会。因此，了解考古文物中粘土的化学成分非常重要。光谱技术是研究所有材料结构以及诸如陶器等文化物品化学成分的最强大工具之一。本研究尝试估算从印度泰米尔纳德邦蓬普哈考古遗址出土的考古陶片的烧制温度。通过记录4000 - 450厘米⁻¹范围内的相应傅里叶变换红外光谱（FT - IR）和1800 - 400厘米⁻¹范围内的显微拉曼光谱来估算考古陶片的烧制温度。通过傅里叶变换红外光谱法确定陶器样品中存在的粘土矿物，并用显微拉曼光谱法进行了确认，因为二者相互补充。样品中存在的主要原生矿物是高岭石，次生矿物是石英，样品中存在的附属矿物是赤铁矿、磁铁矿和长石。拉曼光谱结果表明，该遗址的陶工使用混合粘土作为原材料。一些样品的烧制温度不超过800°C，这表明使用了明火。
