Quantitative assessment of Pb sources in isotopic mixtures using a Bayesian mixing model

Longman, Jack; Vereș, Daniel; Ersek, Vasile; Phillips, Donald L.; Chauvel, Catherine; Tămaş, Călin Gabriel

doi:10.1038/s41598-018-24474-0

Cited by 51 publications

(20 citation statements)

References 82 publications

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“…evaporation, condensation, diffusion, isotopic exchange, radiometric decay, etc.). Specifically, isotopes of Pb are of particular importance in archaeology, Earth and planetary science, and other scientific fields because they provide insights into the origin of the material [1,2]. For example, the isotopic ratio of Pb can identify the production area of archaeological artefacts (e.g.…”

Section: Introductionmentioning

confidence: 99%

Development of non-destructive isotopic analysis methods using muon beams and their application to the analysis of lead

Ninomiya

Kudo

Strasser

et al. 2019

J Radioanal Nucl Chem

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Elemental isotopic ratios are measured in various research fields and provide useful information regarding age, origin, geological and biological activities, ancient climate, etc. Here, we report a new isotopic analysis method without sample destruction using muon-induced characteristic X-rays. We demonstrated this method by conducting muon-beam irradiation experiments on two Pb plates with different isotopic ratios: natural isotopic composition and artificially enriched 208 Pb. The observed broad X-ray peaks of the Pb K α line around 6 MeV were deconvolved with 206 Pb, 207 Pb, and 208 Pb isotopes, giving the isotopic ratios. The resulting isotopic ratios were consistent with those obtained from mass spectrometry.Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Section: Introductionmentioning

confidence: 99%

Development of non-destructive isotopic analysis methods using muon beams and their application to the analysis of lead

Ninomiya

Kudo

Strasser

et al. 2019

J Radioanal Nucl Chem

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“…A Bayesian mixing model, MixSIAR 70 , 71 , was employed to calculate each end-member contribution to Pb in PM 10 . This model incorporates the uncertainties of the isotopic signatures for each source, and it was successfully applied to assess Pb sources in isotopic mixtures quantitatively 72 . The model results revealed the contribution from oil combustion to be predominant (48–88%) during the local events, whereas coal combustion made a minor contribution (< 21%) in central Taiwan (Supplementary Table S2 , Fig.…”

Section: Resultsmentioning

confidence: 99%

Tracing local sources and long-range transport of PM10 in central Taiwan by using chemical characteristics and Pb isotope ratios

Huang

2021

Sci Rep

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Central Taiwan is among the most heavily polluted regions in Taiwan because of a complex mixing of local emissions from intense anthropogenic activities with natural dust. Long-range transport (LRT) of pollutants from outside Taiwan also contributes critically to the deterioration of air quality, especially during the northeast monsoon season. To identify the sources of particulate matter < 10 μm (PM10) in central Taiwan, this study performed several sampling campaigns, including three local events, one LRT event, and one dust storm event, during the northeast monsoon season of 2018/2019. The PM10 samples were analyzed for water-soluble ion and trace metal concentrations as well as Pb isotope ratios. Local sediments were also collected and analyzed to constrain chemical/isotopic signatures of natural sources. The Pb isotope data were interpreted together with the enrichment factors and elemental ratios of trace metals in PM10, and reanalysis data sets were used to delineate the sources of PM10 in central Taiwan. Our results suggested that Pb in PM10 was predominantly contributed by oil combustion and oil refineries during the local events (48–88%), whereas the lowest contributions were from coal combustion (< 21%). During periods of high wind speed, the contribution from natural sources increased significantly from 13 to 31%. Despite Pb represented only a small portion of PM10, a strong correlation (r = 0.89, p < 0.001, multiple regression analysis) between PM10 mass and the concentrations of Pb, V, and Al was observed in the study area, suggesting that the sources of PM10 in central Taiwan can be possibly tracked by using chemical characteristics and Pb isotopes in PM10. Moreover, the Pb isotopic signals of PM10 collected during the LRT event confirmed the impact of LRT from Mainland China, and the chemical characteristics of the PM10 significantly differed from those of the PM10 collected during local events. This study demonstrates the robustness of using a combination of Pb isotopic compositions and chemical characteristics in PM10 for source tracing in complex and heavily polluted areas.

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“…-Mixture signatures can also be the result of recycling: a metallic object (broken for example) can be remelted. Metallurgists can melt copper from a broken object and mix it with copper from a different origin to create a new object with a signature corresponding to the average of the two deposits 7 (Longman et al, 2018).…”

Section: I/ Archaeological Provenance Studiesmentioning

confidence: 99%

“…Among recent work,Bray and Pollard (2012) andLongman et al (2018) proposing statistical treatments in order to try to identify possible mixtures but they are still in their inception stages.…”

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confidence: 99%

Provenance studies using lead isotopy: contribution of the consideration of geological contexts in archaeological databases

Tomczyk¹,

Costa²,

Giosa³

et al. 2021

BSGF - Earth Sci. Bull.

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The question of sources of metal supply and the resulting trade circuits are at the heart of archaeological issues. Provenance studies using lead isotopy has been used since the 1980s to identify the ore deposits from which the metal composing an archaeological object is derived. Indeed, metallurgical processes do not affect the isotopic signature of lead, which remains unchanged between ore and finished product. However, such studies require mineral signature repositories. Archaeologists have therefore built up databases, rich in thousands of analyses. However, these databases only very rarely include gitological information. In addition, lead isotopes are also used in geology but in order to characterize the metallogenic phenomena that lead to the creation of ore deposits. This different type of study requires different sampling: unlike archaeological databases, which include many analyses by mine, geological repositories have very few measurements by deposit. However, although containing few analyses per mine, geological data allow reflection in terms of restricted mineralized subsets and observation of marked groupings in binary diagrams as well as in multidimensional projection. The integration of gitological contexts as qualitative data could thus avoid the problems of statistical discrimination that are common in studies of the provenance of archaeological artifacts. The databases created by geologists, which also count thousands of mineral analyses, can thus be perfectly integrated into production source tracing studies. The finesse of the statistical breakdowns provided by gitological data also opens up new possibilities for data processing through the use of multivariate statistics. Geographical uncertainties are then a function of the quality of the available gitological metadata. Lead isotopic analyses carried out as part of geological studies have much to contribute to the tracing of archaeological production sources.

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Quantitative assessment of Pb sources in isotopic mixtures using a Bayesian mixing model

Cited by 51 publications

References 82 publications

Development of non-destructive isotopic analysis methods using muon beams and their application to the analysis of lead

Development of non-destructive isotopic analysis methods using muon beams and their application to the analysis of lead

Tracing local sources and long-range transport of PM10 in central Taiwan by using chemical characteristics and Pb isotope ratios

Provenance studies using lead isotopy: contribution of the consideration of geological contexts in archaeological databases

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