Due to the fact that during physicochemical processes like evaporation the composition of stable isotopes changes, their composition can be used to reconstruct these processes or the environmental conditions in general.
Fossil carbonates of biological origin like foraminiferas, bivalves, corals and ostracodes are investigated to reconstruct past climate, circulation in the ocean or the history of lakes.
The AMS technique is an extension of conventional isotope ratio mass spectrometry in which a magnetic field is used to separate the ionised carbon isotopes by their different masses which are quantified separately.
The low natural abundance of ) and, after selection of mass 12, 13, 14 and acceleration to 2.5 Me V, molecular ions are destroyed in a gas stripper (Ar) set to strip the negative of a few electrons to an electric charge of 3.
during photosynthesis and subsequently the heterotrophic organisms via the food chain.
Various exchange processes between the atmosphere, the biosphere, and the hydrosphere result in a dynamic equilibrium between C abundance ratio by counting the isotopes themselves.
The Leibniz Laboratory for Radiometric Dating and Stable Isotope Research was established at the Christian-Albrechts-University of Kiel, Germany, in 1994.In-house research and development have been primarily directed at optimising existing sample preparation procedures, developing new ones, and extending the limits of the method.The Stable Isotope Laboratory offers the possibility to analyse the composition of stable isotopes in carbonates (C in dissolved inorganic carbon).Please contact us if you want to analyze microgram samples or individual organic compounds and if you have questions regarding sample amount, sampling or packing.top Please email the data sheet and table to: [email protected] At the start of sample processing, each organic sample and most carbonate samples are inspected under a light microscope where recognizable organic fragments (charcoal, wood, seeds, leaves, pollen, etc.) are selected for dating and contaminants such as rootlets, clothing fiber or hair are removed.14SEA is a new online database targeting the Mesolithic, Neolithic and Chalcolithic periods in Central and Western Anatolia, the Aegean, the Balkans and adjacent areas. Data obtained from Art Empire should be cited as: "to be announced". Developers of PRIMAT and HOMDAT isotope databases Dr.