Synchrotron Radiation-Induced X-Ray Fluorescence (SRXRF) Analyses Of The Bernstorf Gold
| Autor: | Uwe Reinholz, R. Gebhard, Martin Radtke |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Archeology
History Materials science 060102 archaeology Laser ablation inductively coupled plasma mass spectrometry 010401 analytical chemistry Analytical chemistry X-ray fluorescence Synchrotron radiation chemistry.chemical_element 06 humanities and the arts 01 natural sciences Fluorescence Copper Synchrotron 0104 chemical sciences law.invention chemistry law Impurity 0601 history and archaeology |
| Zdroj: | Archaeometry. 59:891-899 |
| ISSN: | 0003-813X |
| Popis: | The gold finds from Bernstorf, in the Freising district of Bavaria, were discovered in 1998, in the area of a Bronze Age settlement. First analyses with X-ray fluorescence (XRF) revealed gold of an unusually high purity grade, which was explained by the use of cementation techniques. A newer analysis with laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS) indicated an even higher purity. The analytical results were the starting point of an ongoing discussion. In this study, we re-analysed 11 gold samples with synchrotron radiation–induced X-ray fluorescence at the BAMline at BESSY. In a thorough analysis, different excitation and detection conditions were applied to confirm or disprove the previous results. It was shown that the purity of the gold from the specimen is higher than 99.9%. The main impurities are silver in a range between 20 and 200 μg g−1 and copper between 1 and 10 μg g−1. The results are in very good agreement with the LA–ICP–MS measurements and provide basic information for discussions about provenance, processing techniques or considerations of authenticity. |
| Databáze: | OpenAIRE |
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