Vertical distribution of 241Am in the southern Baltic Sea sediment profiles

Klaudia Block, Jixin Qiao, Agata Zaborska, Dagmara Strumińska-Parulska*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The contamination of the Baltic Sea with radioactive substances occurred due to the global fallout of atmospheric nuclear weapon tests and the Chernobyl disaster. The knowledge of 241Am in the sediments of the Baltic Sea is limited. Thus, this study aimed to determine 241Am in sediment cores collected from the southern Baltic Sea. Time-based distributions were derived from age-depth profiles using the 210Pb dating method and further corroborated by 137Cs profiles. The activities of 241Am were measured by alpha spectrometry after radiochemical purification. The results show divergences in the concentrations of 241Am at the local level, varying from 0.017 ± 0.001 Bq·kg−1 at the Gotland Basin station to 3.19 ± 0.23 Bq·kg−1 in the Gdańsk Basin. These findings enhance our understanding of the radioactive contamination levels in the Baltic Sea and serve as a crucial reference dataset for future assessments and management strategies to mitigate the environmental impact of radionuclides in the region.
Original languageEnglish
Article number116305
JournalMarine Pollution Bulletin
Volume202
Number of pages11
ISSN0025-326X
DOIs
Publication statusPublished - 2024

Keywords

  • Americium 241Am
  • Radioactive contamination
  • Nuclear weapon tests
  • Chernobyl accident

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