Peruzzi Greta, Ciccola Alessandro, Bosi Adele, Serafini Ilaria, Negozio Martina, Hamza Nagmeldeen Morshed, Moricca Claudia, Sadori Laura, Favero Gabriele, Nigro Valentina, Postorino Paolo, Curini Roberta
Institute for Complex System, National Research Council, Sapienza University, Piazzale Aldo Moro 5, 00185 Rome, Italy.
Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy.
Gels. 2023 Jun 25;9(7):514. doi: 10.3390/gels9070514.
The identification of the dyes present on a linen fragment from the tomb of Pharaoh Tutankhamun is the objective of the present study. Fiber optic reflectance spectroscopy (FORS) was applied to the archaeological sample for preliminary identification of the dyes and to better choose the extraction methodology for different areas of the sample. The innovative gel-supported micro-extraction with agar gel and the Nanorestore Gel High Water Retention (HWR) gel were applied to the archaeological sample after testing of the best concentration for the extraction of the agar gels substrates, performed on laboratory mock-ups by means of UV-Vis transmittance spectroscopy. Immediately after extraction, Ag colloidal pastes were applied on the gel surface and Surface Enhanced Raman Scattering (SERS) analysis was performed directly on them. The combination of information deriving from FORS and SERS spectra resulted in the successful identification of both indigo and madder and, in hypothesis, of their degradation products.
本研究的目的是鉴定法老图坦卡蒙陵墓亚麻布碎片上的染料。将光纤反射光谱法（FORS）应用于考古样品，以初步鉴定染料，并更好地为样品的不同区域选择提取方法。在用紫外可见透射光谱法对实验室模型进行琼脂凝胶底物提取的最佳浓度测试后，将创新的琼脂凝胶支持的微萃取法和纳米修复高保水（HWR）凝胶应用于考古样品。提取后立即将银胶体糊剂涂覆在凝胶表面，并直接对其进行表面增强拉曼散射（SERS）分析。来自FORS和SERS光谱的信息相结合，成功鉴定出了靛蓝和茜草，并且在假设中鉴定出了它们的降解产物。
