Publications
Forty-Year Time Series of Anthropogenic Uranium in<i> Fucus vesiculosus</i> from Kattegat: Validating <sup>236</sup>U Releases from European Nuclear Reprocessing Plants
- Author(s)
- Jixin Qiao, Yiyao Cao, Mu Lin, Yanchun He, Peter Steier, Karin Hain
- Abstract
An accurate input function of uranium-236 (236U) is essential for its numerous applications in environmental and ocean studies. This work reveals potential overestimation on 236U releases from the Sellafield (SF) nuclear reprocessing plant (RP) by earlier estimations using shells. We report a 40-year time series dataset of uranium isotopes in seaweed seasonally collected in the Kattegat, downstream of radioactive discharges from the European RPs, namely La Hague (LH) and SF. Comparison between our measured 236U concentrations in seaweed and model-simulated values derived from 236U releases of LH and SF suggests that the previously reconstructed SF discharges may have nearly 1 order of magnitude overestimation. Such overestimation would introduce large uncertainties when 236U is used as a point source in environmental tracer applications and ocean model validation. We foresee that this work will significantly improve the applications of radioisotope tracers in oceanic studies such as the spreading of marine pollutants, ocean mixing, and circulation, especially in the regions of the North Atlantic and Arctic Oceans.
- Organisation(s)
- Isotope Physics
- External organisation(s)
- Technical University of Denmark (DTU), Zhejiang Provincial Center for Disease Control and Prevention (Zhejiang CDC), Nansen Environmental and Remote Sensing Center, Bjerknes Centre for Climate Research
- Journal
- Environmental Science and Technology
- Volume
- 59
- Pages
- 2675-2685
- No. of pages
- 11
- ISSN
- 0013-936X
- DOI
- https://doi.org/10.1021/acs.est.4c07622
- Publication date
- 01-2025
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103014 Nuclear physics, 102009 Computer simulation
- Keywords
- ASJC Scopus subject areas
- General Chemistry, Environmental Chemistry
- Sustainable Development Goals
- SDG 14 - Life Below Water
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/1ff5771b-a87d-4a17-8b92-7fe03d5992f0