Combined in situ micro-XRF, LIBS and SEM-EDS analysis of base metal and corrosion products for Islamic copper alloyed artefacts from Umm Qais museum, Jordan

Arafat, Abeer; Na’es, Maram; Kantarelou, V.; Haddad, Naseem; Giakoumaki, Anastasia; Argyropoulos, V.; Anglos, Demetrios; Karydas, A. G.

doi:10.1016/j.culher.2012.07.003

Cited by 40 publications

(27 citation statements)

References 12 publications

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“…The absolute limits of detection achievable with LIBS are also far from unacceptable; they are already in the picogram-femtogram range and are soon expected to be further improved by signal enhancement and sub-micrometer sampling techniques. The comparison of the microsampling LIBS with bulk-sampling methods is often also meaningless, but nevertheless it has been repeatedly proved that LIBS can provide similar accuracy to that of either bulk-solid sampling (AAS, ICP-OES, XRF, and ICP-MS [64, [114][115][116]) or solid microsampling (μ-XRF, LA-ICP-MS [117][118][119]) methods, with the added benefit of being portable and available for remote measurements, etc. The calibration-free method of analysis (CF-LIBS), developed by Tognoni et al [120], is probably the quantitative method that has generated the most interest in the LIBS community over the years.…”

Section: Quantitative Analysismentioning

confidence: 99%

A critical review of recent progress in analytical laser-induced breakdown spectroscopy

Galbács

2015

Anal Bioanal Chem

173

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Laser-induced breakdown spectroscopy (LIBS) has become an established analytical atomic spectrometry technique and is valued for its very compelling set of advantageous analytical and technical characteristics. It is a rapid, versatile, non-contact technique, which is capable of providing qualitative and quantitative analytical information for practically any sample, in a virtually non-destructive way, without any substantial sample preparation. The instrumentation is simple, robust, compact, and even enables remote analysis. This review attempts to give a critical overview of the diverse progress of the field, focusing on the results of the last five years. The advancement of LIBS instrumentation and data evaluation is discussed in detail and selected results of some prominent applications are also described.

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Section: Quantitative Analysismentioning

confidence: 99%

A critical review of recent progress in analytical laser-induced breakdown spectroscopy

Galbács

2015

Anal Bioanal Chem

173

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“…Copper sulphate minerals in works of art are usually associated with corrosion products in bronzes (Frost, 2003;FitzGerald et al, 2006;Arafat et al, 2013). In the literature a few examples of the presence of brochantite in green pigment in mural paintings, usually interpreted as a natural mineral associated to malachite in copper ores (Bersani et al, 2003) or as the result of malachite degradation are mentioned (Pérez-Alonso et al, 2006;Castro et al, 2008).…”

Section: Green Pigments In Paintingsmentioning

confidence: 99%

On the Use of the Unusual Green Pigment Brochantite (Cu₄(SO₄)(OH)₆) in the 16th-Century Portuguese-Flemish Paintings Attributed to The Master Frei Carlos Workshop

et al. 2015

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This paper reports an unusual green pigment, brochantite (Cu 4 (SO 4 )(OH) 6 ), on 16th-century Portuguese-Flemish paintings, attributed to the Master Frei Carlos workshop. This green mineral is usually identified as an impurity or alteration product in the green pigments verdigris (Cu(CH 3 COO) 2 nCu(OH) 2 ) or malachite (CuCO 3 Cu(OH) 2 ). However, after thorough investigation with a broad range of analytical techniques, it became clear that, in this case, brochantite was applied as a pigment. The abundance, pigment granulometry, and pigment morphology suggest intentional use by this Portuguese-Flemish Master as a natural pigment rather than its accidental use as an alteration product. This seems to be a distinguishable feature to other painters (Flemish and Portuguese) working in Portugal at the beginning of the 16th century.The multi-analytical study of these easel paintings was first performed by physical imaging techniques and material characterization was carried out by optical microscopy, micro-Fourier-transform infrared-spectroscopy, micro-Raman spectroscopy, scanning electron microscopy coupled with energy dispersive X-ray spectrometry, and micro-X-ray diffraction analysis (XRD).

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“…In the field of cultural heritage conservation, the practical experience of restorers is increasingly supported by the information provided by analytical studies, which allows restorers to identify the characteristics of objects [1], to describe the degradation problems affecting them [2], and above all to quantify the magnitude of any damage [3].…”

Section: Introductionmentioning

confidence: 99%

Study of corrosion in archaeological gilded irons by Raman imaging and a coupled scanning electron microscope–Raman system

Veneranda

Costantini

Vallejuelo

et al. 2016

Phil. Trans. R. Soc. A.

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In this work, analytical and chemical imaging tools have been applied to the study of a gilded spur found in the medieval necropolis of Erenozar (Bizkaia, Spain). As a first step, a lot of portable equipment has been used to study the object in a non-invasive way. The hand-held energy-dispersive X-ray fluorescence equipment allowed us to characterize the artefact as a rare example of an iron matrix item decorated by means of a fire gilding technique. On the other hand, the use of a portable Raman system helped us to detect the main degradation compounds affecting the spur. Afterwards, further information was acquired in the laboratory by analysing detached fragments. The molecular images obtained using confocal Raman microscopy permitted us to characterize the stratigraphic succession of iron corrosions. Furthermore, the combined use of this technique with a scanning electron microscope (SEM) was achieved owing to the use of a structural and chemical analyser interface. In this way, the molecular characterization, enhanced by the magnification feature of the SEM, allowed us to identify several micrometric degradation compounds. Finally, the effectiveness of one of the most used desalination baths (NaOH) was evaluated by comparing its effects with those provided by a reference bath (MilliQ). The comparison proved that basic treatment avoided any side effects on the spur decorated by fire gilding, compensating for the lack of bibliographic documentation in this field. This article is part of the themed issue ‘Raman spectroscopy in art and archaeology’.

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Combined in situ micro-XRF, LIBS and SEM-EDS analysis of base metal and corrosion products for Islamic copper alloyed artefacts from Umm Qais museum, Jordan

Cited by 40 publications

References 12 publications

A critical review of recent progress in analytical laser-induced breakdown spectroscopy

A critical review of recent progress in analytical laser-induced breakdown spectroscopy

On the Use of the Unusual Green Pigment Brochantite (Cu₄(SO₄)(OH)₆) in the 16th-Century Portuguese-Flemish Paintings Attributed to The Master Frei Carlos Workshop

Study of corrosion in archaeological gilded irons by Raman imaging and a coupled scanning electron microscope–Raman system

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Combined in situ micro-XRF, LIBS and SEM-EDS analysis of base metal and corrosion products for Islamic copper alloyed artefacts from Umm Qais museum, Jordan

Cited by 40 publications

References 12 publications

A critical review of recent progress in analytical laser-induced breakdown spectroscopy

A critical review of recent progress in analytical laser-induced breakdown spectroscopy

On the Use of the Unusual Green Pigment Brochantite (Cu4(SO4)(OH)6) in the 16th-Century Portuguese-Flemish Paintings Attributed to The Master Frei Carlos Workshop

Study of corrosion in archaeological gilded irons by Raman imaging and a coupled scanning electron microscope–Raman system

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On the Use of the Unusual Green Pigment Brochantite (Cu₄(SO₄)(OH)₆) in the 16th-Century Portuguese-Flemish Paintings Attributed to The Master Frei Carlos Workshop