Characterisation of a portable Raman spectrometer for in situ analysis of art objects

Lauwers, Debbie; Hutado, Anna Garcia; Tanevska, Vinka; Moëns, Luc; Bersani, Danilo; Vandenabeele, Peter

doi:10.1016/j.saa.2013.08.088

Cited by 105 publications

(92 citation statements)

References 56 publications

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“…[8] Among the different noninvasive methods, X-ray fluorescence (XRF) and Raman spectroscopy based on portable instruments have been demonstrated to be powerful techniques in the archeometric studies of artistic and archeological artifacts. [9][10][11][12][13][14][15][16] In this work, the color palette of a selection of vases currently exhibited at the Regional Museum in Lipára (Figure 1) has been characterized by portable XRF and portable Raman spectrometers, with the aim to complement and enrich our knowledge about the early Hellenistic Sicilian polychrome vase production.…”

Section: Introductionmentioning

confidence: 99%

Pigments characterization of polychrome vases production at Lipára: New insights by noninvasive spectroscopic methods

et al. 2017

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One of the most impressive Sicilian pottery production is attributed to the socalled Lipari Painter and his followers, whose vessels-found in the archeological site of Lipari (Aeolian Island, Sicily)-are decorated with characteristic blue, red, and white figures. From the archeological point of view, these artworks keep open many questions concerning dating, production technique, and cultural background. In this context, new data on the manufacture procedures and on the raw materials used for the pigments may contribute to a deeper comprehension of this early Hellenistic vase tradition. The preciousness of the vessels, exhibited at the Archeological Museum of Lipari, imposed the use of in situ nondestructive methods to address new insights on the nature of the colored layers. Thus, analyses by Raman and X-ray fluorescence spectroscopy have been performed with portable instruments on a selection of vessels certainly attributed to Lipari Painter and to some others of his followers. The results of this study testify the use of different pigments: kaolin and gypsum, probably supplied locally, for white layers; Egyptian blue for blue hues; red ochre for brown-reddish hues; and cinnabar for pink and red-purple nuances. The identification of both Egyptian blue and cinnabar opens an interesting discussion about dating and circulation of the raw materials.

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Section: Introductionmentioning

confidence: 99%

Pigments characterization of polychrome vases production at Lipára: New insights by noninvasive spectroscopic methods

et al. 2017

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“…A number of compact Raman micro-spectrometers are at present commercially available, while laboratory prototypes are also in use for specific applications. Considering field archaeological or conservation work with a Raman spectrometer, a number of factors needs to be taken into account concerning mobility, operational flexibility and robustness, analytical capabilities and cost [11].…”

Section: Introductionmentioning

confidence: 99%

A multi-technique approach, based on mobile/portable laser instruments, for the in situ pigment characterization of stone sculptures on the island of Crete dating from Venetian and Ottoman period

et al. 2016

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A versatile analytical methodology is presented, that combines the application of two mobile laser-based analytical techniques, Raman microscopy and laser-induced breakdown spectroscopy (LIBS), for the analysis of materials in historical and archaeological objects and monuments. In the present study, the proposed methodology was employed in the context of analytical campaigns aiming to investigate paint materials used on the island of Crete during the Venetian and Ottoman periods, thirteenth to nineteenth century CE. The first series of campaigns were conducted at the Historical Museum of Crete, Heraklion, Greece, and provided for the first time compositional data concerning the pigment palette used for painting Ottoman sculpture in Crete. In the second series, campaigns were performed outdoors for studying pigments in the sculptured door frames of two small medieval churches situated at rural locations in the greater Heraklion area. Raman and LIBS analyses gather complementary compositional data, molecular and elemental respectively, which, taken jointly, enable, in most cases, identification of pigments and accessory materials in paint layers, providing also stratigraphic information. With both instruments, measurements are performed directly on the surface of the objects or monuments, with no need for any sampling or sample preparation and thus analytical studies can be conducted rapidly and routinely in the context of a museum setting, a conservation laboratory or even outdoors. A standardized procedure that facilitates data collection and interpretation, interdisciplinary cooperation and presentation of results is adopted that optimizes the overall efficiency of the analytical campaigns.

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“…The EZRAMAN-I-DUAL Raman system is a portable dual laser instrument [6]. It is a fiber-optic-based spectrometer equipped with a near-infrared diode laser (785 nm) and a green Nd:YAG laser (532 nm) and a thermoelectrically cooled CCD detector.…”

Section: Raman Equipmentsmentioning

confidence: 99%

Nondestructive Raman investigation on wall paintings at Sala Vaccarini in Catania (Sicily)

et al. 2016

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In this work, the results of a Raman campaign for studying seventeenth-century Sicilian frescoes, by using two portable Raman systems, equipped with different excitation sources (785 and 1064 nm), are proposed. The measurements were performed with the aim to provide an in situ diagnostic analysis of the wall paintings (in terms of colorants and preparation layer) and to support the conservators in the framework of the ongoing restoration. The combined use of the two Raman spectrometers has given a complete overview on the artist palette and on the state of preservation of frescoes, also informing us about the technique employed by the painter. Natural pigments as hematite, vermillion, goethite, lead red, lead white and carbon-based black pigments have been identified. Additionally, the application of a transitional RomanesqueRenaissance frescoes method has been noticed by the systematic combined presence of calcite and gypsum in the substrate. Finally, the analyses have highlighted the presence of degradation products, mainly related to alteration of lead-based pigments.

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Characterisation of a portable Raman spectrometer for in situ analysis of art objects

Cited by 105 publications

References 56 publications

Pigments characterization of polychrome vases production at Lipára: New insights by noninvasive spectroscopic methods

Pigments characterization of polychrome vases production at Lipára: New insights by noninvasive spectroscopic methods

A multi-technique approach, based on mobile/portable laser instruments, for the in situ pigment characterization of stone sculptures on the island of Crete dating from Venetian and Ottoman period

Nondestructive Raman investigation on wall paintings at Sala Vaccarini in Catania (Sicily)

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