Journal of Radioanalytical and Nuclear Chemistry

, Volume 295, Issue 2, pp 1459–1463 | Cite as

Depth profiles of 129I species in the Bothnian Sea

  • P. YiEmail author
  • A. Aldahan
  • G. Possnert
  • X. L. Hou
  • P. He
  • B. Wang


The Bothnian Sea which is located between Finland and Sweden represents an important source of fresh water to the Baltic Sea. We here present new data on the radioactive isotope 129I species from water samples collected in December 2009 at different depths in the Bothnian Sea. Concentrations of 129I (iodide) in the Bothnian Sea range from 14 × 108 to 32 × 108 atoms/L, while 129IO3 (iodate) concentrations are relatively low and fluctuating at 1 × 108 atoms/L. For nutrients data determined in the same samples as 129I, significant correlations could be found between 129I and total P, NO3–N, SiO3–Si, but rather poor with NH4–N. The correlations suggest comparable source pathway of 129I and nutrient parameters, while the source of NH4–N may be different. The small amounts and negligible change of 129IO3 indicate prevailing extensive reduction of iodate in the Baltic Sea.


Radioactive iodine Bothnian Sea 129AMS Speciation 



The authors thank Lars Andersson and Bodil Thorstensson and all the crew and scientific team on board of the research vessel Argos for the help during the sampling expeditions.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2012

Authors and Affiliations

  • P. Yi
    • 1
    • 6
    Email author
  • A. Aldahan
    • 1
    • 7
  • G. Possnert
    • 2
    • 4
  • X. L. Hou
    • 3
    • 8
  • P. He
    • 1
  • B. Wang
    • 5
  1. 1.Department of Earth SciencesUppsala UniversityUppsalaSweden
  2. 2.Tandem LaboratoryUppsala UniversityUppsalaSweden
  3. 3.Center for Nuclear TechnologiesTechnical University of DenmarkRoskildeDenmark
  4. 4.Department of Physics and AstronomyUppsala UniversityUppsalaSweden
  5. 5.Population Biology and Conservation BiologyUppsala UniversityUppsalaSweden
  6. 6.The College of Hydrology & Water ResourcesHohai UniversityNanjingChina
  7. 7.Department of GeologyUnited Arab Emirates UniversityAl AinUAE
  8. 8.Xi’an AMS Centre and SKLLQG Institute of Earth EnvironmentCASXi’anChina

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