Journal Article

Distribution of artificial radionuclides in lacustrine sediments in China

Fengchang Wu, Jian Zheng, Haiqing Liao and Masatoshi Yamada

in Radiation Protection Dosimetry

Volume 146, issue 1-3, pages 291-294
Published in print July 2011 | ISSN: 0144-8420
Published online April 2011 | e-ISSN: 1742-3406 | DOI:
Distribution of artificial radionuclides in lacustrine sediments in China

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  • Nuclear Chemistry, Photochemistry, and Radiation


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Establishing accurate historical records of the distribution, inventory and source of artificial radionuclides in the environment is important for environmental monitoring and radiological health protection due to their potential toxicity, and is also useful for identification and risk assessment of possible future environmental inputs of radionuclides from nuclear weapons tests and accidental release from the nuclear fuel reprocessing facilities or nuclear power reactors. A sector-field inductively coupled plasma mass spectrometer was used to study the recent sedimentation of Pu isotopes in 11 lakes in China. The distribution of 137Cs was investigated using the conventional radiometric analytical methods. Based on the isotopic compositions of Pu and the activity ratio of 137Cs/239+240Pu, the sources of artificial radionuclides were identified. The potential applications of Pu isotopes for sediment dating and for regional and global environmental change studies were discussed.

Journal Article.  1574 words.  Illustrated.

Subjects: Nuclear Chemistry, Photochemistry, and Radiation

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