Fukushima-derived radionuclides in sediments of the Japanese Pacific Ocean coast and various Japanese water samples (seawater, tap water, and coolant water of Fukushima Daiichi reactor unit 5)

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Katsumi Shozugawa
  • Beate Riebe
  • Clemens Walther
  • Alexander Brandl
  • Georg Steinhauser

External Research Organisations

  • University of Tokyo
  • Colorado State University
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Details

Original languageEnglish
Pages (from-to)1787-1793
Number of pages7
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume307
Issue number3
Publication statusPublished - 23 Aug 2015

Abstract

We investigated Ocean sediments and seawater from inside the Fukushima exclusion zone and found radiocesium (134Cs and 137Cs) up to 800 Bq kg−1as well as 90Sr up to 5.6 Bq kg−1. This is one of the first reports on radiostrontium in sea sediments from the Fukushima exclusion zone. Seawater exhibited contamination levels up to 5.3 Bq kg−1radiocesium. Tap water from Tokyo from weeks after the accident exhibited detectable but harmless activities of radiocesium (well below the regulatory limit). Analysis of the Unit 5 reactor coolant (finding only 3H and even low 129I) leads to the conclusion that the purification techniques for reactor coolant employed at Fukushima Daiichi are very effective.

Keywords

    I, H, Sr, Cesium, Environmental radioactivity, Fukushima, Pacific Ocean

ASJC Scopus subject areas

Sustainable Development Goals

Cite this

Fukushima-derived radionuclides in sediments of the Japanese Pacific Ocean coast and various Japanese water samples (seawater, tap water, and coolant water of Fukushima Daiichi reactor unit 5). / Shozugawa, Katsumi; Riebe, Beate; Walther, Clemens et al.
In: Journal of Radioanalytical and Nuclear Chemistry, Vol. 307, No. 3, 23.08.2015, p. 1787-1793.

Research output: Contribution to journalArticleResearchpeer review

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AU - Shozugawa, Katsumi

AU - Riebe, Beate

AU - Walther, Clemens

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AU - Steinhauser, Georg

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