An improved dye and lake pigment analysis method for high-performance liquid chromatography and diode-array detector

Halpine, Susana Maria

doi:10.1179/sic.1996.41.2.76

Cited by 70 publications

(32 citation statements)

References 15 publications

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“…Parameters for gradient elution are reported elsewhere. [38] Ultraviolet-visible reflectance spectra of samples were acquired in the range 350-880 nm using a Jasco UV/VIS/NIR V-570 spectrophotometer equipped with a BaSO 4 -coated integrating sphere. From the obtained spectra, CIELab values for dyed wool samples with different exposure times were determined referring to the CIE D65/2°illuminant-observer reference conditions.…”

Section: Instrumentationmentioning

confidence: 99%

Identification of anthocyanins in plant sources and textiles by surface-enhanced Raman spectroscopy (SERS)

Zaffino

Bruni

Russo

et al. 2015

J. Raman Spectrosc.

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The aim of the present study was to provide experimental procedures for the identification of anthocyanin‐based dyes used in antiquity. In particular, we assessed the possibility to identify anthocyanins, both in plant extracts and in dyed textiles, by means of surface‐enhanced Raman spectroscopy (SERS), a very chemically specific technique that is moreover sensitive to the changes in structures of molecules, phenomena that occur extensively in the chemistry of anthocyanins. The choice of the plant sources (bilberry, elderberry, sumac, purple corn and hollyhock) was based on their attested use in history as dyeing matters. Suitable extraction and pre‐treatment procedures were optimized both for plant sources (berries, cob glumes and flowers) and textiles dyed with such sources in the laboratory, followed by SERS analyses at different pH values. Finally, special attention was paid to the well‐known instability of anthocyanins: dyed wool samples were exposed to artificial aging in order to verify the possibility to identify such molecules also in faded textiles. The achievement of reliable surface‐enhanced Raman spectra from these samples encourages us to suggest the protocol for the analysis of historical objects. Copyright © 2015 John Wiley & Sons, Ltd.

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Section: Instrumentationmentioning

confidence: 99%

Identification of anthocyanins in plant sources and textiles by surface-enhanced Raman spectroscopy (SERS)

Zaffino

Bruni

Russo

et al. 2015

J. Raman Spectrosc.

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“…Hydrolysis of samples S-3 and L-4 was performed following the procedure described previously. [5] The reference sample of madder lake (Madder Lake, genuine, 37200-B) was supplied by Kremer Pigmente.…”

Section: Methodsmentioning

confidence: 99%

The Sibyls from the church of San Pedro Telmo: a micro‐Raman spectroscopic investigation

Marte¹,

Careaga

Mastrangelo³

et al. 2014

J Raman Spectroscopy

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The series of the Sibyls from the church of San Pedro Telmo is one of the most important groups of paintings of Argentine colonial art. Ten of the paintings were performed in the 18th century, while those corresponding to the Delphic and Tiburtine Sibyls were painted in 1864 during the first restoration of the series in Buenos Aires. There is a controversy regarding the origin of this remarkable group of paintings pointing to an Andean workshop or a Spanish source. In this study, Raman microscopy in combination with scanning electron microscope energy-dispersive X-ray spectrometer analysis and HPLC has successfully identified the materials employed in the manufacture of the paintings. The Raman analysis revealed the presence of a mixture of barium sulfate, lead white, and calcite in the preparation layers of the 19th century Sibyls in contrast to the clayish ground layer in the 18th century paintings. Traditional pigments such as vermilion, lead white, orpiment, indigo, ultramarine blue, and Prussian blue were readily identified by Raman microscopy. The presence of a madder lake in one of the 18th century Sibyls strongly suggests their Spanish origin in accordance with historical data. The identification of synthetic ultramarine blue in the Tiburtine painting is the first report of this blue pigment in Argentine colonial art.

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“…Even if most HPLC experiments concerning the separation of natural dyes are performed using water and acetonitrile as constituents of the mobile phase (see for example references [33][34][35] ), the use of acetonitrile in an online HPLC-SERS system is not suitable as it competes significantly with the analytes for the adsorption on the Ag surface. [17,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] Therefore, water and MeOH were chosen as eluents for the mobile phase. It is well known that the use of an acid modifier improves chromatographic resolution for ionizable compounds by sharpening the elution bands and avoiding possible salt precipitation within the system.…”

Section: Hplc Mobile Phase and Elution Gradientmentioning

confidence: 99%

Online coupling of high‐performance liquid chromatography with surface‐enhanced Raman spectroscopy for the identification of historical dyes

Zaffino

Bedini

Mazzola

et al. 2016

J Raman Spectroscopy

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High‐performance liquid chromatography (HPLC) is still, today, the technique of choice for the analysis of natural dyes in artistic objects and historical textiles, particularly in association with photodiode array (PDA) detection. In the last two decades, surface‐enhanced Raman spectroscopy (SERS) gained also increasing importance for these investigations thanks to its sensitivity and limited requirements in terms of sample quantity. In favor of SERS, its high specificity in molecular recognition typical of vibrational spectroscopy should be mentioned, whereas this non‐separative technique is obviously disadvantaged in the analyses of mixed chromophores, as is often the case of many natural dyes and also of tints obtained by the combined use of different colorants. An optimized experimental setup combining the two techniques, HPLC‐PDA and SERS, is proposed in the present work, allowing online SERS detection of different dyeing compounds eluted from the HPLC column. Examples are presented concerning some of the colorants most widely used in history, such as morin and luteolin for yellow dyes, alizarin, purpurin, laccaic, kermesic, and carminic acids for red ones, and indigotin for blue tints. Copyright © 2016 John Wiley & Sons, Ltd.

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An improved dye and lake pigment analysis method for high-performance liquid chromatography and diode-array detector

Cited by 70 publications

References 15 publications

Identification of anthocyanins in plant sources and textiles by surface-enhanced Raman spectroscopy (SERS)

Identification of anthocyanins in plant sources and textiles by surface-enhanced Raman spectroscopy (SERS)

The Sibyls from the church of San Pedro Telmo: a micro‐Raman spectroscopic investigation

Online coupling of high‐performance liquid chromatography with surface‐enhanced Raman spectroscopy for the identification of historical dyes

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