Publications
Preparation Methods of μg Carbon Samples for 14C Measurements
- Author(s)
- Peter Steier, Jakob Liebl, Walter Kutschera, Eva Maria Wild, Robin Golser
- Abstract
Systematic investigations and experience from several application projects on small carbon samples over a number of years have resulted in measuring the radiocarbon content of 10 μg C samples with an overall precision of typically 1%. A substantial reduction of the carbon contamination during graphitization was achieved, resulting in 31±30 ng modern and <100 ng
14C-free carbon. Thus, graphitization is no longer the limiting factor because earlier sample preparation steps usually introduce much larger contamination. The method has been extended to a variety of materials and applied to various projects. Realistic conditions for procedure development can only be achieved in the context of applications on true samples; methods developed are the lyophilization of samples in solution, combustion, ultraviolet oxidation, or carbonate hydrolysis with phosphoric acid, which allows to prepare samples for a wide range of applications. Insights gained from systematic investigations and from real applications are presented.
- Organisation(s)
- Isotope Physics
- External organisation(s)
- PTW-Freiburg Physikalisch-Technische Werkstätten Dr. Pychlau GmbH
- Journal
- Radiocarbon
- Volume
- 59
- Pages
- 803-814
- No. of pages
- 12
- ISSN
- 0033-8222
- DOI
- https://doi.org/10.1017/RDC.2016.94
- Publication date
- 06-2017
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103014 Nuclear physics
- Keywords
- ASJC Scopus subject areas
- General Earth and Planetary Sciences, Archaeology
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/7f16a964-acec-413f-9f2f-b02f5df1e182