Comparison of neutron activation analysis (NAA) and energy dispersive X-ray fluorescence (XRF) spectrometry for the non-destructive analysis of coins minted under the early Piast dynasty

Bolewski, Andrzej; Matosz, Marta; Pohorecki, W.; Hoyo‐Meléndez, Julio M. del

doi:10.1016/j.radphyschem.2020.108699

Cited by 14 publications

(10 citation statements)

References 17 publications

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“…Unfortunately, since we do not have such reference materials at our disposal, it was not possible to apply this method. Moreover, Bolewski et al (2020) showed that this ratio was not always good at predicting surface enrichment of silver. Micro-XRF has a sampling depth which is higher than the corrosion layer of typically up to 50 μm in Ag-Cu coins (Bolewski et al 2020).…”

Section: Limitations Of Surface Analysis a Literature Reviewmentioning

confidence: 99%

“…Moreover, Bolewski et al (2020) showed that this ratio was not always good at predicting surface enrichment of silver. Micro-XRF has a sampling depth which is higher than the corrosion layer of typically up to 50 μm in Ag-Cu coins (Bolewski et al 2020). The measured signal is thus a mixture of the corrosion layer and the deeper, sound metal, which usually leads to reasonable quantification (del Hoyo-Meléndez et al 2015).…”

Section: Limitations Of Surface Analysis a Literature Reviewmentioning

confidence: 99%

“…Few papers compare the bulk and surface composition of Ag-Cu alloys. One such study compared bulk (NAA) and surface (XRF) composition of Ag-Cu coins from tenth to eleventh century Poland and found that for 16% of the coins within their assemblage the surface was enriched in Ag (8-22% difference between bulk and surface) (Bolewski et al 2020). Linke and Schreiner (2003) proposed that the Ag L-α/Ag K-α intensities could provide an indication of the thickness of the corrosion layer in Ag-Cu alloys, by comparing the Ag L-α/Ag K-α ratio in reference materials and in samples.…”

Section: Limitations Of Surface Analysis a Literature Reviewmentioning

confidence: 99%

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Sasanian copper and billon coins from the collections of the Royal Museums of Art and History, Brussels, Belgium—insights using semi-quantitative analysis by μXRF

Ham-Meert

Rademakers

Gyselen³

et al. 2020

Archaeol Anthropol Sci

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This paper presents the micro-XRF analysis of over 100 Sasanian billon and copper coins from the collections of the Royal Museums of Art and History in Brussels, Belgium. This study discovered that some coins, thought to be copper, were actually billon coins. Furthermore, it illustrated the continuity in use and recipe of small copper coins from the Parthian into the Sasanian period. Previous research into the elemental composition of copper coins from the Sasanian period only spanned the period 224-309 CE, while this paper encompasses the whole period until the fall of the empire in 651 CE. The link with lead coins is also discussed.

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Section: Limitations Of Surface Analysis a Literature Reviewmentioning

confidence: 99%

Section: Limitations Of Surface Analysis a Literature Reviewmentioning

confidence: 99%

Section: Limitations Of Surface Analysis a Literature Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Sasanian copper and billon coins from the collections of the Royal Museums of Art and History, Brussels, Belgium—insights using semi-quantitative analysis by μXRF

Ham-Meert

Rademakers

Gyselen³

et al. 2020

Archaeol Anthropol Sci

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“…In the field of cultural heritage analyses, the analytical techniques applied in each study must be selected as a function of the sample nature, as well as the destructive or nondestructive character of the equipment. The most commonly used techniques in the study of the samples from cultural heritage are: scanning electron microscopy coupled with energy dispersive X-ray spectrometry (SEM-EDS) [10][11][12][13][14][15][16][17][18][19], X-ray fluorescence [13,16,17,20], Xray diffraction (XRD) [11][12][13]19], Raman spectroscopy [11-13, 16, 21-23], Fourier transform infrared spectroscopy (FTIR) [10-12, 14-16, 18, 19], X-ray photoelectron spectroscopy (XPS) [24,25], Auger electron spectroscopy [17,25], neutron diffraction [20,26], neutron tomography [13,27], neutron activation analysis (NAA) [20,26], and optical microscopy (OM) [12,13], as nondestructive or minimally invasive techniques. In this study, a combination of few techniques (i.e., OM, SEM-EDS, ATR-FTIR, and Raman spectroscopy) was applied to provide comprehensive information about the studied fragments.…”

Section: Analytical Techniquesmentioning

confidence: 99%

Archaeometric Analyses on Precucuteni-Type Pottery From Transylvania (Romania). Case Study: Alba Iulia-Lumea Nouă

et al. 2021

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The aim of this paper is to find out - for the first time - through archaeometric analysis the provenance of the Precucuteni-type pottery from Alba Iulia-Lumea Nouă settlement and whether it has a local origin or is an imported ceramic. The presence of so-called Precucuteni-type pottery in Transylvanian sites, decorated by motifs using excision techniques, represents one of the most challenging debates related to the understanding of the material culture that belongs to Early Eneolithic human communities in the Intra-Carpathian area. A combination of non-invasive / micro-destructive analytical techniques and statistical methods were applied to provide comprehensive information about the studied fragments. In this respect, ten pottery samples were investigated to establish the elemental and molecular composition, as well as its origin. Overall, the analytical and statistical analyses show us that the local production of pottery is predominant, with a limited presence of imports. In summary, nine ceramic fragments out of all analyzed samples belong to the same group, with a strong correlation between them, confirming that they are locally made, while one sample can be considered as imported from elsewhere or obtained through mixing clay with some existing soils in the area during the pottery production stage.

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“…So, in [12] neutron activation analysis (NAA) and XRF were compared for non-destructive analysis of antique coins from Ag-Cu alloys. The simultaneous determination of Ag and Au nanoparticles in water samples by total reflection X-ray fluorescence spectrometry is presented in [13].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Identification of white jewelry alloy based on silver and platinum for testing purposes

Артюх

Hryhorenko

Ternova

et al. 2021

EEJET

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The procedure for the identification of white jewelry alloys based on precious metals, in particular, silver, platinum and platinum group metals with different contents of alloying components, by testing on an assay stone and by the method of X-ray fluorescence analysis has been considered. The methodology for assessing the compliance of silver and platinum fineness in white jewelry alloys of different component composition with the requirements of regulatory documents and the procedure for their identification has been improved. It has been established that the silver fineness in precious alloys of the AgCu, AgZnCu system, determined using the potassium dichromate reagent on the test stone, depends on the manifestation of the contrast of the qualitative reaction from the standard sample (assay needle). It has been proven that for testing silver alloys containing palladium, the "Acid reagent for gold 750" is effective, which works to determine the qualitative and approximate content of silver in alloys. It was determined that the reagent "Ferrous-cyanide potassium" is very sensitive to changes in the alloy composition of silver alloys and makes it possible to establish the silver content with an accuracy of 5 %. The presence in silver alloys of such impurities as zinc, cadmium, nickel, gold, palladium and others increases the error in determining the fineness of silver and forms a different color and shade. It has been proven that testing of silver alloys on an assay stone with silver nitrate is effective only for the СрМ system. The presence of zinc in 925 sterling silver alloys visually increases the color intensity of the sediment, which indicates a higher overestimated fineness. It has been found that the identification of the content of precious alloys based on platinum for the presence of ligature components is carried out with a potassium iodide reagent at t=120 °C by the color and shade of the sediment. The procedure for using potassium iodide during testing of precious platinum-based alloys has been optimized

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Comparison of neutron activation analysis (NAA) and energy dispersive X-ray fluorescence (XRF) spectrometry for the non-destructive analysis of coins minted under the early Piast dynasty

Cited by 14 publications

References 17 publications

Sasanian copper and billon coins from the collections of the Royal Museums of Art and History, Brussels, Belgium—insights using semi-quantitative analysis by μXRF

Sasanian copper and billon coins from the collections of the Royal Museums of Art and History, Brussels, Belgium—insights using semi-quantitative analysis by μXRF

Archaeometric Analyses on Precucuteni-Type Pottery From Transylvania (Romania). Case Study: Alba Iulia-Lumea Nouă

Identification of white jewelry alloy based on silver and platinum for testing purposes

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