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- Title
Development of an analytical strategy for the determination of <sup>228</sup>Th and <sup>232</sup>Th in ivory based on the combined use of ICP-MS and α-spectrometry.
- Authors
Schmidberger, Andreas; Schupfner, Robert; Matysik, Frank-Michael
- Abstract
Elephants are endangered due to the value of their ivory tusks. Therefore, a reliable method for age determination of ivory is of interest for the law enforcement against elephant poachers. The ratio of the specific activities 228Th/232Th can be used for the age assessment of ivory. In this report, the combination of two complementary detection techniques, namely inductively coupled plasma-mass spectrometry (ICP-MS) and α-spectrometry, for the determination of 228Th and 232Th in ivory is presented. Using ICP-MS in addition to α-spectrometry, the uncertainty of the 232Th determination could be reduced significantly which enabled a more accurate and effective ivory dating.
- Subjects
IVORY; ANALYTICAL chemistry; INDUCTIVELY coupled plasma mass spectrometry; RADIOACTIVE dating; POACHERS
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2018, Vol 318, Issue 3, p2007
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-018-6191-8