Radio-Krypton Dating with 20kg of Water or Ice
Abstract
Long-lived noble-gas isotopes 85Kr (10.8 y), 39Ar (269 y) and 81Kr (229 ky) are ideal tracers for dating environmental samples such as groundwater and ice. Together with 14C, these nuclides can be used to cover the whole range of 100 - 106 y. To meet the increasing demands from the earth science community, a new, improved ATTA apparatus for radio-krypton analysis is being developed at the University of Science and Technology of China (USTC). From 2017, this instrument will be capable to analyze several hundred samples per year and also reduce the sample requirement to 1-2.5 μL STP of krypton gas, which can be extracted from 20-50 kg of water or 8-20 kg of ice. In parallel, a new sampling machine for use in the field is under test at USTC, which weighs less than 20kg and can be carried by one person. With this new dating tool sharpened, we believe that many more interesting applications can be carried out in collaboration with the earth science communities. (http://atta.ustc.edu.cn)
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2016
- Bibcode:
- 2016AGUFM.H21B1403H
- Keywords:
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- 1804 Catchment;
- HYDROLOGYDE: 1813 Eco-hydrology;
- HYDROLOGYDE: 1829 Groundwater hydrology;
- HYDROLOGYDE: 1830 Groundwater/surface water interaction;
- HYDROLOGY