染料分析的新进展:用于SERS和HPLC-MS/MS识别的油漆层和织品的现场凝支持液体提取
Adele Bosi1,2, Greta Peruzzi3, Alessandro Ciccola1
1Department of Chemistry, Sapienza University of Rome, P. le Aldo Moro 5, 00185 Rome, Italy.
Molecules (Basel, Switzerland)
|July 29, 2023
概括
本研究介绍了一种最小侵入性方法,用于识别文化遗产中的有机染料. 通过水凝辅助提取和SERS/HPLC-MS/MS分析,成功识别了,黄和蓝染料,样品损伤最小.
科学领域:
- 艺术保护科学 艺术保护科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 在文化遗产中识别有机染料至关重要,但由于采样限制和分析物质特性而具有挑战性.
- 在分析过程中,保护独特历史物品的完整性至关重要.
- 目前用于有机染料识别的方法通常需要侵入性采样,或与低度和较差的染料稳定性作斗争.
研究的目的:
- 开发和验证在文化遗产材料中的有机染料识别的最小侵入性方法.
- 通过补充非侵入性无机物质分析,使复杂的文化遗产矩阵能够进行全面分析.
- 通过测色仪测量来评估开发的程序的温和性.
主要方法:
- 使用水凝从涂料层和织品中微侵袭性液体提取染料 (马德尔,黄,蓝).
- 表面增强拉曼光谱 (SERS) 分析直接在用凝提取的样本上,用银合物糊涂.
- 高性能液体染色学与双重质谱学 (HPLC-MS/MS) 结合,用于重新提取和净化染料样本.
- 测色仪测量 (ΔE值) 用于量化颜色变化和评估程序的温和性.
主要成果:
- 通过使用SERS和HPLC-MS/MS.成功识别了,黄和红色染料.
- 水凝有效地支持染料提取和随后的多技术分析.
- 重新提取和清理步骤成功地应用于madder和黄.
- 测色仪证实了该程序的温和性,大多数 ΔE 值低于显著颜色变化的值.
结论:
- 开发的最小侵入性方法允许有效识别文化遗产中的关键有机染料.
- 液凝辅助提取为分析敏感遗产材料提供了一个多功能平台.
- 该程序保留了宝贵物体的完整性,对颜色属性的影响最小.
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