Zinka, Bettina and Kandlbinder, Robert and Schupfner, Robert and Haas, Gerald and Wolfbeis, Otto S. and Graw, Matthias (2012) The activity ratio of Th-228 to Ra-228 in bone tissue of recently deceased humans: a new dating method in forensic examinations. ANTHROPOLOGISCHER ANZEIGER, 69 (2). pp. 147-157. ISSN 0003-5548,
Full text not available from this repository. (Request a copy)Abstract
Reliable determination of time since death in human skeletons or single bones often is limited by methodically difficulties. Determination of the specific activity ratio of natural radionuclides, in particular of Th-232 (Thorium), Th-228 and Ra-228 (Radium) seems to be a new appropriate method to calculate the post mortem interval. These radionuclides are incorporated by any human being, mainly from food. So with an individual's death the uptake of radionuclides ends. But the decay of Th-232 produces Ra-228 and Th-228 due to its decay series, whereas Th-228 is continuously built up in the human's bones. Thus, it can be concluded that in all deceased humans at different times after death different activity ratios of Th-228 to Ra-228 will develop in bone. According to this fact it should be possible to calculate time since death of an individual by first analysing the specific activities of Th-228 and Ra-228 in bones of deceased and then determining the Th-228/Ra-228 activity ratio, which can be assigned to a certain post-mortem interval.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RADIONUCLIDE TRANSFER; COMPOUND METHOD; THORIUM; TIME; EXPERIENCES; CARBONATES; RADIUM; DEATH; SOIL; post mortem interval (PMI); radionuclides; Th-228; Ra-228; Th-228/Ra-228 activity ratio; deceased humans; human bone tissue |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 May 2020 08:31 |
| Last Modified: | 25 May 2020 08:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19499 |
Actions (login required)
 |
View Item |
