Journal of The Chilean Chemical Society | |
MULTI-INSTRUMENTAL IDENTIFICATION OF ORPIMENT IN ARCHAEOLOGICAL MORTUARY CONTEXTS | |
SALAS, CRISTIAN O1  LEYTON, PATRICIO2  PAIPA, CAROLINA3  CAMPOS-VALLETTE, MARCELO4  ARRIAZA, BERNARDO5  OGALDE, JUAN PABLO5  LARA, NELSON5  | |
[1] Pontificia Universidad Católica de Chile, Santiago, Chile;Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile;Universidad Andrés Bello, Viña del Mar, Chile;Universidad de Chile, Santiago, Chile;Universidad de Tarapacá, Arica, Chile | |
关键词: Pigments; Raman spectroscopy; SEM-; EDX; Chorrillos; Northern Chile.; | |
DOI : 10.4067/S0717-97072014000300010 | |
学科分类:化学(综合) | |
来源: Sociedad Chilena de Quimica | |
【 摘 要 】
This paper reports on an unknown yellowish mineral compound found in an archaeological context from Chorrillos cemetery (Calama, Chile) dating to the Early Formative period (800 - 200 B.C.). We used optic microscopy, SEM, EDX, 1H-RMN, 13C-RMN, and infrared (IR) and Raman spectroscopy to tease out the chemical and molecular composition of the sample. The microscopic images show amorphous yellowish granulates with heterogeneous chemical surfaces. 1H-RMN and 13C-RMN negative results show that the sample is free of organic matter. The SEM and EDX indicate the presence of arsenic and sulfur in the sample. The IR and Raman analyses suggest the presence of orpiment which is a toxic yellow arsenic sulfide mineral.
【 授权许可】
Unknown
【 预 览 】
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RO201902019837490ZK.pdf | 594KB | download |