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Costantino C, Monico L, Rosi F, Vivani R, Romani A, Colocho Hurtarte LC, Villalobos-Portillo E, Sahle CJ, Huthwelker T, Dejoie C, Burghammer M, Cotte M. Non-Destructive and Non-Invasive Approaches for the Identification of Hydroxy Lead-Calcium Phosphate Solid Solutions ((Pb xCa 1-x) 5(PO 4) 3OH) in Cultural Heritage Materials. APPLIED SPECTROSCOPY 2024:37028241243375. [PMID: 38567433 DOI: 10.1177/00037028241243375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Lead-calcium phosphates are unusual compounds sometimes found in different kinds of cultural heritage objects. Structural and physicochemical properties of this family of materials, which fall into the hydroxypyromorphite-hydroxyapatite solid solution, or (PbxCa1-x)5(PO4)3OH, have received considerable attention during the last few decades for promising applications in different fields of environmental and material sciences, but their diagnostic implications in the cultural heritage context have been poorly explored. This paper aims to provide a clearer understanding of the relationship between compositional and structural properties of the peculiar series of (PbxCa1-x)5(PO4)3OH solid solutions and to determine key markers for their proper non-destructive and non-invasive identification in cultural heritage samples and objects. For this purpose, a systematic study of powders and paint mock-ups made up of commercial and in-house synthesized (PbxCa1-x)5(PO4)3OH compounds with a different Pb2+/Ca2+ ratio was carried out via a multi-technique approach based on scanning electron microscopy, synchrotron radiation-based X-ray techniques, i.e., X-ray powder diffraction and X-ray absorption near edge structure spectroscopy at the Ca K- and P K-edges, and vibrational spectroscopy methods, i.e., micro-Raman and Fourier transform infrared spectroscopy. The spectral modifications observed in the hydroxypyromorphite-hydroxyapatite solid solution series are discussed, by assessing the advantages and disadvantages of the proposed techniques and by providing reference data and optimized approaches for future non-destructive and non-invasive applications to study cultural heritage objects and samples.
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Affiliation(s)
- Claudio Costantino
- Centre of Excellence SMAArt and Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Letizia Monico
- Centre of Excellence SMAArt and Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- AXIS Research Group, NANOlab Centre of Excellence, Department of Physics, University of Antwerp, Antwerp, Belgium
| | - Francesca Rosi
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Riccardo Vivani
- Pharmaceutical Science Department, University of Perugia, Perugia, Italy
| | - Aldo Romani
- Centre of Excellence SMAArt and Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
- CNR-SCITEC, c/o Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | | | | | | | - Thomas Huthwelker
- Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Switzerland
| | | | | | - Marine Cotte
- European Synchrotron Radiation Facility, Grenoble, France
- Sorbonne Université, CNRS, Laboratoire d'archéologie moléculaire et structurale, LAMS, UMR 8220, Paris, France
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Hodeau JL, Prat A, Boudet N, Blanc N, Arnaud S, Hazemann JL, Lahéra E, Proux O, Jacquet M, Autran PO, Dejoie C, Martinetto P. A compact-rigid multi-analyser for energy and angle filtering of high-resolution X-ray experiments. Part 2. Efficiency of a single-crystal-comb. JOURNAL OF SYNCHROTRON RADIATION 2023; 30:126-136. [PMID: 36601932 PMCID: PMC9814061 DOI: 10.1107/s1600577522011250] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Diffraction instruments using filtering by one or several analyser crystals exist since the 1980s and 1990s at synchrotron radiation sources, but, due to its low efficiency, this filtering is little used on laboratory sources. In order to overcome this limitation, the efficiency of a small diffraction filtering multi-analyzer block (MAD block) realized with a `single-crystal-comb' curved on a rigid support is demonstrated here. The geometry of this curved surface is logarithmic spiral and is optimized to allow multi-filtering over a relatively important diffraction angular range and to be also applicable over an X-ray spectral range. The efficiency of such a small rigid-compact MAD block consisting of this single-crystal-comb generating 20-50 Si(111) single-crystal blades, associated with a block of Soller collimators, is demonstrated. The angle between each crystal is 0.1°, so the measurement range of the comb is 2-5°. The geometry of this system has been optimized for operation with a synchrotron X-ray source over an energy range of 22 keV to 46 keV and could be used with laboratory X-ray sources (Ag Kα1, 22.1 keV). This MAD block complements and exploits the qualities of the `photon-counting' detectors which have very low intrinsic noise. Their joint efficacy is supported by powder pattern measurements of a LaB6 reference sample and of several heterogeneous samples of cultural heritage materials, carried out at 22 keV on the D2AM beamline at the ESRF. Their signal-to-noise ratio is excellent (1000/1) and allows the detection thresholds of the measurements (from 3-1% to 0.1%) to detect minor phases in the studies of `real' heterogeneous materials to be drastically improved.
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Affiliation(s)
- J.-L. Hodeau
- Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, France
| | - A. Prat
- Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, France
| | - N. Boudet
- Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, France
| | - N. Blanc
- Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, France
| | - S. Arnaud
- Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, France
| | - J.-L. Hazemann
- Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, France
| | - E. Lahéra
- OSUG-FAME, CNRS-UGA-IRD-INRAe-MétéoFrance, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - O. Proux
- OSUG-FAME, CNRS-UGA-IRD-INRAe-MétéoFrance, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - M. Jacquet
- LAL, Univ. Paris-Sud XI, CNRS-IN2P3, Orsay, France
| | - P.-O. Autran
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - C. Dejoie
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, F-38000 Grenoble, France
| | - P. Martinetto
- Institut Néel CNRS-UGA, 25 Avenue des Martyrs, 38042 Grenoble, France
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The Volcanic-Rich Layer of the “Camporotondo (Marche, Italy)” Section: Petrography and Sedimentation of an Unknown Distal Messinian Eruption. MINERALS 2022. [DOI: 10.3390/min12070893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A Messinian and lithified horizon enriched in volcanic particles with thicknesses of 170–180 cm crops in the Camporotondo (CR) section (Marche, Italy). This volcanic-rich layer (VRL) was investigated by field plus mesoscopic observations, X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), bulk composition methods and electron-microprobe analysis (EMPA). The quantitative textural features of volcanic and sedimentary components were determined by 2D image analysis. The lowermost massive 70–80 cm portion is free of sedimentary structure or characterised only by plane-parallel ones, whereas the uppermost one is undulated and cross-laminated. The XRPD and SEM outcomes unveil that the VRL of CR is mainly composed of glassy shards (≥80 area%), a variable amount of sedimentary minerals (<20 area%) and a very low content of magmatic minerals (few area%). The bulk and micro-chemical attributes of volcanic and glassy materials are rhyolitic and almost identical to previous VRLs dated at 5.5 Ma (VRL-5.5). The signatures of immobile elements and the high amount of H2O present in the glass fraction suggest a provenance from a convergent geodynamic setting. The 2D image analysis on SEM observations show that the VRL-5.5 of CR is composed of very fine and sorted (averages of MZ of 5,72 and σi of 0,70), scarcely vesicular, glass shards, with similar long and short size dimensions, shape and roundness. The VRL-5.5 of CR is free of large minerals and fossils. The coupling of mesoscopic and microscopic determinations indicates that the lowermost interval was deposited such as a primary tephra, i.e., fallout pyroclasts sinking in seawater. Instead, the uppermost interval derives from local, low-energy and sin-depositional remobilisation of the same VRL-5.5. The textural attributes of the volcanic fractions, the sedimentological features and the thickness of the VRL at CR correspond to the westward deposit of a still unknown eruption likely occurred at 5.5 Ma.
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A Multi-Analytical Investigation of Roman Frescoes from Rapoltu Mare (Romania). COATINGS 2022. [DOI: 10.3390/coatings12040530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
(1) Background: Due to the precarious situation of many monuments or archeological sites, analytical investigations are necessary to obtain information about the used materials, as well as to identify the most appropriate solutions for their conservation/restoration. This paper addresses the characterization of mural painting fragments collected during the excavation in 2018 in Rapoltu Mare (La vie), Deva. (2) Methods: Specific analytical techniques were used, as follows: X-ray diffractometry (XRD), wavelength dispersive X-ray fluorescence (WDXRF), optical microscopy (OM), zoom microscopy and scanning electron microscopy (SEM), spectroscopic techniques (UV–Vis, FTIR, Raman), porosity and thermal analysis, all of which provide information about the structure, chemical composition, morphology and topography of pigments and their deterioration as well. (3) Results: Up to seven different pigments were identified: Egyptian blue, carbon, calcite, gypsum, hematite, goethite and green earth. Egyptian Blue is identified in all the other color areas, except the white area: in the green zone (as degradation product with beeswax) and in the red zone (in mixture with ochre) too. In addition, carbon and beeswax were highlighted as toner and binder for pigments, respectively. In the presence of the organic beeswax binding environment, the Egyptian blue pigment particles darkened or turned yellow significantly, changing the blue to a greenish color. It is also possible to identify wollastonite (CaSiO3) in the blue pigment, which indicates that the temperature used in the manufacturing of Egyptian blue was higher than 950 °C from thermal analysis. The presence of apatite, hematite and gypsum deposits in the Hunedoara region certifies that these pigments could have been of local origin, as demonstrated by the presence of analytically identified elements (Fe, P, S, Ca). (4) Conclusions: The analytical techniques used for such investigations have highlighted the main pigments used in Roman times for various Roman murals.
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Terban MW, Billinge SJL. Structural Analysis of Molecular Materials Using the Pair Distribution Function. Chem Rev 2022; 122:1208-1272. [PMID: 34788012 PMCID: PMC8759070 DOI: 10.1021/acs.chemrev.1c00237] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Indexed: 12/16/2022]
Abstract
This is a review of atomic pair distribution function (PDF) analysis as applied to the study of molecular materials. The PDF method is a powerful approach to study short- and intermediate-range order in materials on the nanoscale. It may be obtained from total scattering measurements using X-rays, neutrons, or electrons, and it provides structural details when defects, disorder, or structural ambiguities obscure their elucidation directly in reciprocal space. While its uses in the study of inorganic crystals, glasses, and nanomaterials have been recently highlighted, significant progress has also been made in its application to molecular materials such as carbons, pharmaceuticals, polymers, liquids, coordination compounds, composites, and more. Here, an overview of applications toward a wide variety of molecular compounds (organic and inorganic) and systems with molecular components is presented. We then present pedagogical descriptions and tips for further implementation. Successful utilization of the method requires an interdisciplinary consolidation of material preparation, high quality scattering experimentation, data processing, model formulation, and attentive scrutiny of the results. It is hoped that this article will provide a useful reference to practitioners for PDF applications in a wide realm of molecular sciences, and help new practitioners to get started with this technique.
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Affiliation(s)
- Maxwell W. Terban
- Max
Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Simon J. L. Billinge
- Department
of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States
- Condensed
Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
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6
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Autran PO, Dejoie C, Bordet P, Hodeau JL, Dugand C, Gervason M, Anne M, Martinetto P. Revealing the Nature of Black Pigments Used on Ancient Egyptian Papyri from Champollion Collection. Anal Chem 2021; 93:1135-1142. [PMID: 33316154 DOI: 10.1021/acs.analchem.0c04178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although numerous papyri from ancient Egypt have been collected and preserved over the centuries, the recipe used to prepare black inks was only reported in manuscripts from the late Greco-Roman period. Black inks were mostly obtained after mixing carbon black with a binder agent and water. In previous studies performed on black inks apposed on papyri from ancient Egypt, additional chemical elements such as lead, iron, or copper were also identified, and the resulting chemical contrast with the papyrus support was used to virtually decrypt highly degraded or rolled papyri. Combining a series of synchrotron-based techniques with Raman spectroscopy and scanning electron microscopy, we investigated 10 papyri fragments from J.-F. Champollion's private collection. For each fragment, the carbon-black pigment found in the ink is identified as flame carbon (lampblack or soot). Using X-ray diffraction computed tomography, we show that the diffraction signal of the carbon-based pigment itself can be isolated. As a result, a contrast with the papyrus support is obtained, even in the absence of a specific chemical element in the ink. This is opening up new opportunities to decipher words written millennia ago, as part of our Cultural Heritage.
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Affiliation(s)
- Pierre-Olivier Autran
- Univ. Grenoble Alpes, CNRS, Grenoble, Institut Néel, Grenoble 38000, France.,European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Catherine Dejoie
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, Grenoble 38000, France
| | - Pierre Bordet
- Univ. Grenoble Alpes, CNRS, Grenoble, Institut Néel, Grenoble 38000, France
| | - Jean-Louis Hodeau
- Univ. Grenoble Alpes, CNRS, Grenoble, Institut Néel, Grenoble 38000, France
| | - Caroline Dugand
- Département de l'Isére, Musée Champollion, 45 Rue Champollion, Vif 38450, France
| | - Maëva Gervason
- Département de l'Isére, Musée Champollion, 45 Rue Champollion, Vif 38450, France
| | - Michel Anne
- Univ. Grenoble Alpes, CNRS, Grenoble, Institut Néel, Grenoble 38000, France
| | - Pauline Martinetto
- Univ. Grenoble Alpes, CNRS, Grenoble, Institut Néel, Grenoble 38000, France
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7
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Insights into the composition of ancient Egyptian red and black inks on papyri achieved by synchrotron-based microanalyses. Proc Natl Acad Sci U S A 2020; 117:27825-27835. [PMID: 33106396 PMCID: PMC7668004 DOI: 10.1073/pnas.2004534117] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Ink, invented in ancient Egypt circa 5,000 y ago, is the established and time-honored medium wherewith humankind commits words to writing. A comprehensive synchrotron-based microanalysis of a considerable corpus of ancient Egyptian papyri from the Roman period, inscribed with red and black inks, reveal a hitherto undetected complex composition of inks. Highlighted by the presence of iron, the red color can be attributed to the use of ocher. Unexpectedly, lead is regularly present in both the red and black inks and is associated to phosphate, sulfate, chloride, and carboxylate ions. The analysis shows that lead was probably used as a drier rather than as a pigment, similar to its usage in 15th century Europe during the development of oil paintings. A hitherto unknown composition is highlighted in the red and black inks preserved on ancient Egyptian papyri from the Roman period (circa 100 to 200 CE). Synchrotron-based macro–X-ray fluorescence (XRF) mapping brings to light the presence of iron (Fe) and lead (Pb) compounds in the majority of the red inks inscribed on 12 papyrus fragments from the Tebtunis temple library. The iron-based compounds in the inks can be assigned to ocher, notably due to the colocalization of Fe with aluminum, and the detection of hematite (Fe2O3) by micro–X-ray diffraction. Using the same techniques together with micro-Fourier transform infrared spectroscopy, Pb is shown to be associated with fatty acid phosphate, sulfate, chloride, and carboxylate ions. Moreover, micro-XRF maps reveal a peculiar distribution and colocalization of Pb, phosphorus (P), and sulfur (S), which are present at the micrometric scale resembling diffused “coffee rings” surrounding the ocher particles imbedded in the red letters, and at the submicrometric scale concentrated in the papyrus cell walls. A similar Pb, P, and S composition was found in three black inks, suggesting that the same lead components were employed in the manufacture of carbon-based inks. Bearing in mind that pigments such as red lead (Pb3O4) and lead white (hydrocerussite [Pb3(CO3)2(OH)2] and/or cerussite [PbCO3]) were not detected, the results presented here suggest that the lead compound in the ink was used as a drier rather than as a pigment. Accordingly, the study calls for a reassessment of the composition of lead-based components in ancient Mediterranean pigments.
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8
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Gueriau P, Rueff JP, Bernard S, Kaddissy JA, Goler S, Sahle CJ, Sokaras D, Wogelius RA, Manning PL, Bergmann U, Bertrand L. Noninvasive Synchrotron-Based X-ray Raman Scattering Discriminates Carbonaceous Compounds in Ancient and Historical Materials. Anal Chem 2017; 89:10819-10826. [DOI: 10.1021/acs.analchem.7b02202] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pierre Gueriau
- IPANEMA, CNRS, Ministère
de la Culture, UVSQ, Université Paris-Saclay, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
- Synchrotron SOLEIL, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
| | - Jean-Pascal Rueff
- Synchrotron SOLEIL, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
- Sorbonne Universités,
UPMC Université Paris 06, CNRS, UMR 7614, Laboratoire de Chimie
Physique-Matière et Rayonnement, F-75005 Paris, France
| | - Sylvain Bernard
- IMPMC,
CNRS UMR
7590, Sorbonne Universités, MNHN, UPMC, IRD UMR 206, 61 rue Buffon, 75005 Paris, France
| | - Josiane A. Kaddissy
- IPANEMA, CNRS, Ministère
de la Culture, UVSQ, Université Paris-Saclay, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
| | - Sarah Goler
- Columbia
Nano Initiative, Columbia University, 530 West 120th Street, MC8903 1001
CEPSR, New York, New York 10027, United States
| | - Christoph J. Sahle
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Dimosthenis Sokaras
- Stanford PULSE Institute, SLAC National Accelerator
Laboratory, Menlo Park, California 94025, United States
| | - Roy A. Wogelius
- University of Manchester, School of Earth and Environmental Sciences, Williamson Research Centre for Molecular Environmental Science & Interdisciplinary Centre for Ancient Life, Manchester M139PL, U.K
| | - Phillip L. Manning
- Department
of Geology and Environmental Geosciences, College of Charleston, 66 George Street, Charleston, South Carolina 29424, United States
- Department
of Earth and Environmental Sciences, University of Manchester, Oxford
Road, Manchester, M139PL, U.K
| | - Uwe Bergmann
- Stanford PULSE Institute, SLAC National Accelerator
Laboratory, Menlo Park, California 94025, United States
| | - Loïc Bertrand
- IPANEMA, CNRS, Ministère
de la Culture, UVSQ, Université Paris-Saclay, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
- Synchrotron SOLEIL, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
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