Leibniz labor for radiometric dating and isotope research
The stable isotopic composition of water samples is analysed to study hydrological cycles and the input of anthropogenic CO2 in the ocean.
Our chemical pre-treatment of organic samples is based on the familiar acid-alkali-acid AAA cleaning with diluted hydrochloric acid and sodium hydroxide, which is commonly used in radiocarbon laboratories.
Again, the size of the age discrepancy between the two dates provides an indication of the reliability of the collagen sample age.
The AMS Laboratory was founded to provide radiometric dating services to the University of Kiel and to customers from all over the world.
More than half of the world's fish and seafood products come from aquaculture.This diversification in feed ingredients has brought benefits in terms of reduced production costs and has, at least in part, decreased pressure on wild fish stocks.For example, since 2015 conventionally farmed Atlantic salmon (Salmo salar L.) have been fed only 20% marine based diets as opposed to 90% four decades ago.The precision decreases with increasing sample age.
As tracer concentrations are typically a millionfold natural, minute quantities suffice to seriously contaminate samples with natural radiocarbon levels.After the initial mosaic of local styles in the Early Neolithic, including sparsely decorated wares and early Comb Ware, the Middle Neolithic period, starting in the 5th millennium cal BC, saw the development and spread of larger, more homogenous typological entities between the Urals and the Baltic, the Comb-Pit and Pit-Comb wares.