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Characterization of Pottery from Teotihuacan Using Laser-Induced Breakdown Spectroscopy and Inductively Coupled Plasma Optical Emission Spectroscopy
Applied Spectroscopy ( IF 3.5 ) Pub Date : 2021-02-18 , DOI: 10.1177/0003702821991931
Hugo Sobral 1 , Mitzi Amador-Mejía 1 , Ciro Márquez-Herrera 2
Affiliation  

Pottery sherds from Teotihuacan, Mexico, belonging to the Formative and Classic periods (150 BCE–700 CE) were investigated using laser-induced breakdown spectroscopy (LIBS) and inductively coupled plasma optical emission spectrometry (ICP-OES). LIBS results show that most of the investigated samples have primarily the same elemental composition. Nevertheless, there are also a few sherds that could be associated to foreign ceramic groups with characteristic concentrations of Na, K, Ca, Mn, Rb, and Sr. The relative elemental composition of red pigments applied on ceramic bodies was also analyzed through a LIBS depth profiling. Diverse hematite-based pigments were distinguished according to the detected iron content. Hematite was also combined with red soils with a high relative content of Mn, Sr, Ba, or Ti. The ICP-OES analysis of ceramic pastes is consistent with the emission intensities obtained using LIBS. Principal component analysis indicates that all samples identified as locals belong to a single chemical group. Moreover, locally made ceramics and the analyzed clays from the nearby area have the same elemental composition, which appears clearly differentiated from imported samples.



中文翻译:

用激光诱导击穿光谱和电感耦合等离子体发射光谱法表征特奥蒂瓦坎的陶器

使用激光诱导击穿光谱法(LIBS)和电感耦合等离子体发射光谱法(ICP-OES)对墨西哥特奥蒂瓦坎的陶片场进行了研究,它们属于形成期和经典时期(150 BCE–700 CE)。LIBS结果表明,大多数研究样品基本具有相同的元素组成。尽管如此,也有一些可能与特征浓度为Na,K,Ca,Mn,Rb和Sr的外来陶瓷基团相关的种子。还通过LIBS分析了应用于陶瓷体的红色颜料的相对元素组成。深度剖析。根据检测到的铁含量,可以区分各种基于赤铁矿的颜料。赤铁矿还与相对含量较高的Mn,Sr,Ba或Ti的红壤结合。陶瓷浆料的ICP-OES分析与使用LIBS获得的发射强度一致。主成分分析表明,所有被识别为本地样品的样品都属于一个化学组。此外,本地制造的陶瓷和附近区域分析的粘土具有相同的元素组成,这显然与进口样品有所不同。

更新日期:2021-02-18
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