Schmidberger, Andreas and Durner, Bernhard and Gehrmeyer, David and Schupfner, Robert (2018) Development and application of a method for ivory dating by analyzing radioisotopes to distinguish legal from illegal ivory. FORENSIC SCIENCE INTERNATIONAL, 289. pp. 363-367. ISSN 0379-0738, 1872-6283
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The age determination of elephant ivory provides necessary and crucial information for all criminal prosecution authorities enforcing the Convention on International Trade in Endangered Species of Wild Fauna and Flora. The knowledge of the age of ivory allows to distinguish between pre-convention, hence legal material and ivory deriving from recent, illegal poaching incidents. The commonly applied method to determine the age of ivory is radiocarbon dating in the form of bomb pulse dating, which however will fade out soon. This work provides an enhancement of the radiocarbon dating method by supplementary determination of the isotope profile of 90-Sr and the two thorium isotopes 228-Th and 232-Th. This combined analysis allows for a precise and unambiguous age determination of ivory. We provided calibration curves for all involved radionuclides by analyzing ivory samples with known age and investigated a new method for the extraction of strontium from ivory. (c) 2018 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SEPARATION; STRONTIUM; SR-90; C-14; EXTRACTION; CALCIUM; TH-228; Wildlife forensic science; Ivory dating; Combined radionuclide analysis; Low-level radiation detection; Crone ether |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 11 Mar 2020 12:47 |
| Last Modified: | 11 Mar 2020 12:47 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14102 |
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