Noninvasive Multitechnique Analysis of Baroque Amber Artworks From Gdansk: The Benefits of Using Raman Spectroscopy

IF 2.4 3区 化学 Q2 SPECTROSCOPY Journal of Raman Spectroscopy Pub Date : 2024-09-10 DOI:10.1002/jrs.6727
Anna Rygula, Anna Klisińska‐Kopacz, Marta Matosz, Tomasz Wilkosz, Michał Obarzanowski, Paulina Krupska‐Wolas, Karolina Skóra, Aldona Kopyciak, Joanna Harasim‐Grym, Julio M. del Hoyo‐Meléndez
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Abstract

The multidisciplinary, noninvasive analysis of baroque amber artworks is part of a research project that deals with the most valuable objects from the Museum of Gdansk (Poland). The two most interesting objects will be presented here: a Baroque Gdansk wardrobe‐shaped amber cabinet (made by Johann Georg Zernebach, Gdansk, 1724) and a crucifix (Gdansk, 17th century). Macro‐ (UV, IR, and X‐radiography) and micro‐ (XRF and Raman spectroscopy) analytical methods were applied to reveal traces of old conservation treatments and uncover the techniques of the 17th and 18th century amber masters. UV photography shows the differences between the amber plates that are not so easily detected under visible light, while XRF spectrometry detects elements atypical for amber objects, suggesting previous conservation treatments. Confocal Raman measurements, especially Raman depth profiling, were performed for the amber artworks and allowed to detect areas of previous conservation treatments. Single‐point scans were collected from the surface (0 μm) to a depth of −200 μm, with a step of 50 μm. The results allowed us to identify three different types of zones: where the amber was preserved without any protective layer, places where the amber was covered with a thin layer of a protective substance, and places where amber elements were compensated for loss using a binding agent and filler. The presented project allowed the development of a comprehensive methodology for the analysis of amber objects, especially to optimize the capabilities of confocal Raman microscopy. The combination of macro‐ and microanalytical techniques made it possible to obtain a broad overview of such complex artworks while optimizing the time and effort spent on the investigations.
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对来自格但斯克的巴洛克琥珀艺术品进行非侵入式多技术分析:使用拉曼光谱的好处
对巴洛克琥珀艺术品的多学科、非侵入性分析是格但斯克博物馆(波兰)最珍贵文物研究项目的一部分。这里将介绍两件最有趣的物品:一个巴洛克时期格但斯克衣橱形琥珀柜(由约翰-乔治-泽内巴赫制作,格但斯克,1724 年)和一个十字架(格但斯克,17 世纪)。应用宏观(紫外线、红外线和 X 射线)和微观(XRF 和拉曼光谱)分析方法揭示了旧的保存处理痕迹,并揭示了 17 和 18 世纪琥珀大师的技艺。紫外线摄影显示了在可见光下不易察觉的琥珀板之间的差异,而 XRF 光谱法则检测出了琥珀物品的非典型元素,表明了以前的保护处理。对琥珀艺术品进行共焦拉曼测量,特别是拉曼深度剖面测量,可以检测出曾经进行过保护处理的区域。从表面(0 μm)到-200 μm的深度进行了单点扫描,扫描步长为50 μm。结果使我们确定了三种不同类型的区域:没有任何保护层的琥珀保存区、琥珀被一层薄薄的保护层覆盖的地方,以及使用粘合剂和填充物补偿琥珀元素损失的地方。该项目为分析琥珀物品开发了一套全面的方法,尤其是优化了共焦拉曼显微镜的功能。宏观和微观分析技术的结合使我们有可能对此类复杂的艺术品进行全面的了解,同时优化了调查所花费的时间和精力。
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来源期刊
CiteScore
5.40
自引率
8.00%
发文量
185
审稿时长
3.0 months
期刊介绍: The Journal of Raman Spectroscopy is an international journal dedicated to the publication of original research at the cutting edge of all areas of science and technology related to Raman spectroscopy. The journal seeks to be the central forum for documenting the evolution of the broadly-defined field of Raman spectroscopy that includes an increasing number of rapidly developing techniques and an ever-widening array of interdisciplinary applications. Such topics include time-resolved, coherent and non-linear Raman spectroscopies, nanostructure-based surface-enhanced and tip-enhanced Raman spectroscopies of molecules, resonance Raman to investigate the structure-function relationships and dynamics of biological molecules, linear and nonlinear Raman imaging and microscopy, biomedical applications of Raman, theoretical formalism and advances in quantum computational methodology of all forms of Raman scattering, Raman spectroscopy in archaeology and art, advances in remote Raman sensing and industrial applications, and Raman optical activity of all classes of chiral molecules.
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Issue Information Issue Information Sensitivity of the C–H Stretching Band in Raman Spectra to Phospholipid Order A Novel Incident Circular Polarized Light Raman Optical Activity (ICP‐ROA) Spectrometer With Advanced Polarization Control Micro‐Raman Spectroscopy for the Identification of Drawing Materials Used Throughout the 17th and 20th Centuries
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