Applications of Raman spectroscopy in art and archaeology

Ziemann, Martin A.; Madariaga, Juan Manuel

doi:10.1002/jrs.6054

Cited by 10 publications

(8 citation statements)

References 29 publications

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“…However, a scientific diagnostic approach, through the use of diagnostic techniques, capable of gaining knowledge of the technologies and materials used, has not been widely adopted in this field of research as has been the case for other types of works of art [ 4 , 5 , 6 ]. Currently, there are not many examples of scientific research in the literature concerning the study of industrial heritage.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, there are not many examples of scientific research in the literature concerning the study of industrial heritage. One of the most recent is the work by Tissot et al [ 7 ] on the paint coatings of three energy generators from the early 20th-century power plant at Levada de Tomar (Portugal) that shows the importance of applying a scientific-diagnostic method even for the study of objects belonging to the industrial revolution [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

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Analytical Techniques Applied to the Study of Industrial Archaeology Heritage: The Case of Plaiko Zubixe Footbridge

Costantini¹,

Castro²,

Madariaga³

et al. 2022

Molecules

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In this work, micro-Raman spectroscopy and micro-energy-dispersive X-ray fluorescence spectroscopy (µ-EDXRF) were applied on microsamples taken from the Plaiko Zubixe footbridge (1927) located in Ondarroa (Basque Country, Spain) in order to investigate the original paint coating and make an evaluation of the conservation state before its restoration. Elemental and molecular images were acquired for the study of the compounds distribution. Some modern pigments such as phthalocyanine blue and green pigments, minium, calcium carbonate, Prussian blue, and hematite were identified. Barium sulfate and titanium dioxide were recognized as opacifier agents. Thanks to the study of the stratigraphies, it has been possible to determine the original paint layer, which includes lead white, ultramarine blue, carbon black, and barium sulfate. In addition, colorimetric analyses made it possible to know the CIELab values of the original layer in order to reproduce the original colour during the planned restoration work. The massive presence of chlorine detected by µ-EDXRF and the corrosion products of the rust layer, in particular akaganeite and hematite, highlighted the atmospheric impact in the conservation of the bridge because they were due to the effect of both marine aerosol and to the presence of acidic components in the environment coming from anthropogenic activity. This work demonstrated the usefulness of a scientific approach for the study of industrial archaeology heritage with the aim to contribute to its conservation and restoration.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical Techniques Applied to the Study of Industrial Archaeology Heritage: The Case of Plaiko Zubixe Footbridge

Costantini¹,

Castro²,

Madariaga³

et al. 2022

Molecules

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“…Raman spectroscopy is based on inelastic light scattering − and is often masked by strong fluorescence in daily acquisition since the cross section of fluorescence is much higher than that of Raman. Fluorescence interference has been one of the main challenges for the Raman technique over half a century. − Numerous effects have been reported to extract Raman signals in the presence of fluorescence, − including changes in the excitation wavelength, photobleaching (PB), surface-enhanced Raman spectroscopy (SERS), computational algorithms, as well as spatially offset Raman spectroscopy .…”

Section: Introductionmentioning

confidence: 99%

“…Fluorescence interference has been one of the main challenges for the Raman technique over half a century. − Numerous effects have been reported to extract Raman signals in the presence of fluorescence, − including changes in the excitation wavelength, photobleaching (PB), surface-enhanced Raman spectroscopy (SERS), computational algorithms, as well as spatially offset Raman spectroscopy . However, it remains difficult to obtain Raman signals with sufficient quality in a noninvasive manner for fragile solid samples in the presence of severe fluorescence. ,, Noncontact measurement, low laser power, and easy operation without sample pollution and damage are urgent needs for vulnerable samples but extremely challenging in the existing methods.…”

Section: Introductionmentioning

confidence: 99%

Ionic-Wind-Enhanced Raman Spectroscopy without Enhancement Substrates

et al. 2022

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Raman spectra are often masked by strong fluorescence, which severely hinders the applications of Raman spectroscopy. Herein, for the first time, we report ionic-wind-enhanced Raman spectroscopy (IWERS) incorporated with photobleaching (PB) as a noninvasive approach to detect fluorescent and vulnerable samples without a substrate. In this study, ionic wind (IW) generated by needle-net electrodes transfers charges to the sample surface in air on the scale of millimeters rather than nanometers in surface-enhanced Raman spectroscopy. Density functional theory calculations reveal that the ionic particles in IW increase the susceptibility of the sample molecules, thus enhancing the Raman signals. Meanwhile, the incorporation of IW with PB yields a synergistic effect to quench fluorescence. Therefore, this approach can improve the signal-to-noise ratio of Raman peaks up to three times higher than that with only PB. At the same time, IWERS can avoid sample pollution and destruction without substrates as well as high laser power. For archeological samples and a red rock as an analogue to Mars geological samples, IWERS successfully identified weak but key Raman peaks, which were masked by strong florescence. It suggests that IWERS is a promising tool for characterizations in the fields of archeology, planetary science, biomedicine, and soft matter.

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“…This technique was used in the past for the characterization of several inorganic and organic materials. [15][16][17][18][19][20][21][22][23] Moreover, the capability of Raman spectroscopy to detect adulterated and counterfeit products was demonstrated. [24][25][26] In this work, the capability of Raman spectroscopy to detect adulteration of three essential oils by addition of canola oil as the nonvolatile adulterant was tested.…”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopy in the detection of adulterated essential oils: The case of nonvolatile adulterants

Jentzsch

Sandoval‐Pauker

Pozo

et al. 2021

J Raman Spectroscopy

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Essential oils are liquid mixtures of volatile compounds extracted from plants. Their quality is usually controlled via gas chromatography (GC), although with limitations when adulterants are nonvolatile substances. The essential oils of lavender (Lavandula angustifolia Mill.), peppermint (Mentha piperita L.), patchouli (Pogostemon cablin Benth), and their adulterated versions were measured by GC coupled to flame ionization detector (GC‐FID) and Raman spectroscopy. Canola oil, a nonvolatile substance, was used as the adulterant. The adulterated essential oils contained 1%, 3%, 5%, 10%, 15%, and 20% (v/v) of canola oil. Chromatograms of the adulterated essential oils containing 20% (v/v) of canola oil showed decrements in peak areas of the essential oil components, compared with peaks of the pure essential oils. The highest decrements were observed for the adulterated essential oil of patchouli. In general, detection of adulterated essential oils by simple visual inspection of the Raman features was difficult, due to slight differences observed in the spectra. Principal Components Analysis (PCA) allowed achieving a good spectral discrimination between pure and adulterated essential oils. These results suggest that Raman spectroscopy can overcome limitations of GC‐based methods, thus becoming an interesting alternative and complementary technique for quality control of essential oils.

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Applications of Raman spectroscopy in art and archaeology

Cited by 10 publications

References 29 publications

Analytical Techniques Applied to the Study of Industrial Archaeology Heritage: The Case of Plaiko Zubixe Footbridge

Analytical Techniques Applied to the Study of Industrial Archaeology Heritage: The Case of Plaiko Zubixe Footbridge

Ionic-Wind-Enhanced Raman Spectroscopy without Enhancement Substrates

Raman spectroscopy in the detection of adulterated essential oils: The case of nonvolatile adulterants

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