超越艺术家的颜色:一个光谱参考数据库,用于识别β-纳夫托和三碳素色素的MeV SIMS的颜色
Teodora Raicu1, Matea Krmpotić2, Zdravko Siketić2
1Institute for Natural Sciences and Technology in the Arts, Academy of Fine Arts Vienna, Augasse 2-6, Vienna A-1090, Austria.
ACS omega
|September 30, 2024
概括
使用MeV初级离子 (MeV SIMS) 的二次离子质谱有效地识别了艺术品中的β-纳夫托和三碳素色素. 这种方法可以区分颜料,调色剂,湖水和染料,这对于艺术品的保存至关重要.
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:
- β-Naphthol 和 triarylcarbonium 染料在历史艺术品中很常见,但容易色.
- 准确的识别对于艺术品的保护和展览规划至关重要.
- 之前的分析技术,如XRF,拉曼和FTIR与复杂的混合物和低度的这些色素作斗争.
研究的目的:
- 应用MeV SIMS用于从历史集合中识别特定的β-纳夫托和三碳素色素.
- 评估MeV SIMS在分析其他方法失败的染料混合物的有效性.
- 为了区分各种形式的色素 (颜料,调色剂,湖,染料).
主要方法:
- 使用MeV SIMS与5MeV Si4+初级离子进行分析.
- 分析了维也纳美术学院的19世纪和20世纪材料收藏的参考材料.
- 检查了正离子模式 (分子/质子离子) 和负离子模式 (功能组/物种).
主要成果:
- 梅维SIMS在正离子模式下成功检测出分子或质子分子.
- 在负离子模式下,确定了 β-纳夫托色剂的特征性功能组 (NO2−,SO3−) 和三碳酸色剂的异聚酸物种 (WO3−,MoO3−).
- 该技术有效地识别了混合物中的色素,超过了以前的方法.
结论:
- MeV SIMS是一种高效的技术,用于在复杂混合物中识别β-纳夫托和三碳素色素.
- 该方法提供了详细的信息,以区分颜料,调色剂,湖水和染料.
- 这一进步有助于精确分析和保存含有这些合成有机色素的历史艺术品.
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