Participants:\u00a0Prof. Sabine Fiedler<\/p>\n\n\n\n
In cooperation with the\u00a0Johannes Gutenberg University of Mainz, CEZA is working on the further development of\u00a014<\/sup>C dating\u00a0on biomarkers.<\/p>\n\n\n\n Depending on the storage environment, datable organic remains can be preserved for a very limited period of time. In geoarchives (sediments, soils) they are usually only present discontinuously, which considerably limits the reconstruction of (pre-)historical environmental and living conditions. This is aggravated by the fact that organic remains were often relocated before they were deposited. Older remains introduced into younger sediments inevitably lead to misinterpretations. During storage, an input of younger carbon (e.g. humic acids, lime) can mask the older carbon.<\/p>\n\n\n\n The dating of\u00a0bones\u00a0and\u00a0wood\u00a0(carbon) stored in geoarchives is therefore particularly critical. Modern chemical processing methods, such as those used in the 14<\/sup>C laboratory facility funded by the Klaus Tschira Foundation, can often remove these contaminations. However, in special cases it has been shown that a complete removal is not possible, which excludes a\u00a0dating\u00a0in these cases. This mainly affects archaeological samples but also forensically relevant samples.<\/p>\n\n\n\n The aim of the project is to overcome the difficulties mentioned above by direct\u00a014<\/sup>C-dating\u00a0of single biomarkers (component-specific 14<\/sup>C-dating). Some of these biomarkers are stable over long periods of time. Their molecular fingerprint allows conclusions to be drawn about their origin, without the organism from which they originate still being visible itself. Existing methods are being further developed to eliminate matrix effects that can be expected in different materials and to enable component-specific age determination of n-alkanes, steroids, fatty acids, lignin and amino acids.<\/p>\n","protected":false},"excerpt":{"rendered":" In Zusammenarbeit mit der Johannes-Gutenberg-Universit\u00e4t Mainz arbeitet CEZA an der Weiterentwicklung der 14<\/sup>C-Datierung an Biomarkern.<\/p>\n","protected":false},"featured_media":3501,"template":"","format":"standard","meta":{"editor_notices":[],"footnotes":""},"class_list":["post-1072","projects","type-projects","status-publish","format-standard","has-post-thumbnail","hentry"],"yoast_head":"\n