XRF of cultural heritage materials: Round-robin IV—paint on canvas

2009 ◽  
Vol 24 (2) ◽  
pp. 124-129 ◽  
Author(s):  
C. Namowicz ◽  
K. Trentelman ◽  
C. McGlinchey
Keyword(s):  
Cultural Heritage ◽  
Round Robin ◽  
X Ray ◽  
Xrf Analysis ◽  
Works Of Art ◽  
Working Practices ◽  
Xrf Spectroscopy ◽  
Representative Samples ◽  
Shielding Effects

To establish standard working practices and further understanding of the application of X-ray fluorescence (XRF) spectroscopy to works of art and cultural heritage materials, a series of round-robin tests have been conducted biannually since 2002. In 2008 the round-robin explored the application of XRF to the study of paintings on canvas. Thirteen samples, consisting of both modern and traditional pigments on canvas, were distributed to 25 participating institutions for analysis. The samples were designed to explore common challenges encountered in the XRF analysis of painted works including peak overlaps, sum peaks, layering/shielding effects, detection of low-Z pigments, and modern pigments. The results from representative samples highlighting each topic are discussed.

In situ XRF analysis of Cs adsorption by the precipitation bands of Prussian blue analogues formed in agarose gels

2019 ◽  
Vol 34 (5) ◽  
pp. 979-985 ◽  
Author(s):  
Hisashi Hayashi ◽  
Yui Sato ◽  
Saya Aoki ◽  
Mao Takaishi
Keyword(s):  
Prussian Blue ◽  
Agarose Gel ◽  
X Ray ◽  
Agarose Gels ◽  
Xrf Analysis ◽  
Prussian Blue Analogues ◽  
Xrf Spectroscopy

The measurement of Cs adsorption by the precipitation bands of Mn-based Prussian blue analogues (PBAs), Co-based PBAs, and Prussian blue (PB), which were spontaneously formed in agarose gel, was carried out using in situ X-ray fluorescence (XRF) spectroscopy.

scholarly journals Characterisation of corrosion products on copper-based artefacts: potential of MA-XRF measurementsties of MA-XRF measurement

ACTA IMEKO ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 136
Author(s):  
Elisabetta Di Francia ◽  
Sabrina Grassini ◽  
Giovanni Ettore Gigante ◽  
Stefano Ridolfi ◽  
Sergio Augusto Barcellos Lins
Keyword(s):  
Spatial Distribution ◽  
Cultural Heritage ◽  
Corrosion Product ◽  
Analytical Approach ◽  
Corrosion Products ◽  
X Ray ◽  
Distribution Maps ◽  
Works Of Art ◽  
Filtering Techniques

The use of macro-X-ray fluorescence (MA-XRF) scanners is now widespread in cultural heritage applications. However, its use for the characterisation of metallic works of art is still limited. In this study, a novel portable MA-XRF scanner prototype was tested on artificially corroded copper samples to assess its analytical capabilities on corroded metals, yielding information on the spatial distribution of the corrosion products grown on the metal’s surface. A multi-analytical approach was used to thoroughly characterise the copper samples and compare the obtained results to verify the reliability of the MA-XRF data. The prototype was able to obtain distribution maps of different elements, such as sulphur and chlorine, which can be directly correlated to different corrosion products. With the use of imaging filtering techniques, it was possible to investigate the stratification of the corrosion product layers and observe gradients in the distribution of certain elements.

Handheld XRF and Raman equipment for the in situ investigation of Roman finds in the Villa dei Quintili (Rome, Italy)

2017 ◽  
Vol 32 (1) ◽  
pp. 117-129 ◽  
Author(s):  
R. Alberti ◽  
V. Crupi ◽  
R. Frontoni ◽  
G. Galli ◽  
M. F. La Russa ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
X Ray ◽  
Xrf Analysis ◽  
In Situ Investigation ◽  
Non Destructive ◽  
Handheld Xrf

A variety of fragments of frescoes coming from the Villa dei Quintili in Rome and dating back to the II century A.D. were subjected to, first of all, an X-ray fluorescence (XRF) analysis by optimizing a portable spectrometer for non-destructive investigation in the field of cultural heritage.

X-ray microprobe system for XRF analysis and spectroscopy at SPring-8 BL39XU

1998 ◽  
Vol 5 (3) ◽  
pp. 1114-1116 ◽  
Author(s):  
Shinjiro Hayakawa ◽  
Shunji Goto ◽  
Takashi Shoji ◽  
Eiji Yamada ◽  
Yohichi Gohshi
Keyword(s):  
Trace Element ◽  
Trace Element Analysis ◽  
Scanning System ◽  
Element Analysis ◽  
Undulator Radiation ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Xrf Analysis ◽  
Collimation System ◽  
Xrf Spectroscopy

An X-ray microprobe system for X-ray fluorescence (XRF) analysis and spectroscopy has been developed at SPring-8 BL39XU; it comprises an X-ray focusing or collimation system, energy-dispersive (ED) and wavelength-dispersive (WD) XRF spectrometers, and a sample-scanning system. The conventional ED spectrometer will be utilized for qualitative and quantitative trace-element analysis, and the WD spectrometer will be used both for trace-element analysis and XRF spectroscopy. A combination of monochromated undulator radiation and the WD spectrometer will enable resonant XRF spectroscopy using brilliant hard X-ray undulator radiation.

scholarly journals More than XRF Mapping: STEAM (Statistically Tailored Elemental Angle Mapper) a Pioneering Analysis Protocol for Pigment Studies

2021 ◽  
Vol 11 (4) ◽  
pp. 1446
Author(s):  
Jacopo Orsilli ◽  
Anna Galli ◽  
Letizia Bonizzoni ◽  
Michele Caccia
Keyword(s):  
Cultural Heritage ◽  
Element Distribution ◽  
Elemental Distribution ◽  
X Rays ◽  
Spectral Angle Mapper ◽  
X Ray ◽  
Fluorescence Radiation ◽  
Set Up ◽  
Non Destructive ◽  
Analysis Protocol

Among the possible variants of X-Ray Fluorescence (XRF), applications exploiting scanning Macro-XRF (MA-XRF) are lately widespread as they allow the visualization of the element distribution maintaining a non-destructive approach. The surface is scanned with a focused or collimated X-ray beam of millimeters or less: analyzing the emitted fluorescence radiation, also elements present below the surface contribute to the elemental distribution image obtained, due to the penetrative nature of X-rays. The importance of this method in the investigation of historical paintings is so obvious—as the elemental distribution obtained can reveal hidden sub-surface layers, including changes made by the artist, or restorations, without any damage to the object—that recently specific international conferences have been held. The present paper summarizes the advantages and limitations of using MA-XRF considering it as an imaging technique, in synergy with other hyperspectral methods, or combining it with spot investigations. The most recent applications in the cultural Heritage field are taken into account, demonstrating how obtained 2D-XRF maps can be of great help in the diagnostic applied on Cultural Heritage materials. Moreover, a pioneering analysis protocol based on the Spectral Angle Mapper (SAM) algorithm is presented, unifying the MA-XRF standard approach with punctual XRF, exploiting information from the mapped area as a database to extend the comprehension to data outside the scanned region, and working independently from the acquisition set-up. Experimental application on some reference pigment layers and a painting by Giotto are presented as validation of the proposed method.

A Data Fusion Method For The Delayering Of X-Ray Fluorescence Images Of Painted Works Of Art

2021 ◽  
Author(s):  
L. D. Fiske ◽  
A. K. Katsaggelos ◽  
M. C. G. Aalders ◽  
M. Alfeld ◽  
M. Walton ◽  
...  
Keyword(s):  
Data Fusion ◽  
Fusion Method ◽  
X Ray ◽  
Works Of Art ◽  
Fluorescence Images
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