Instrumental neutron activation analysis of spherule samples recovered from the Pacific ocean sea sediment and Antarctic ice sheet

S. Sekimoto, T. Kobayashi, K. Takamiya, M. Ebihara, S. Shibata

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Chemical compositions of spherules separated from deep sea sediment dredged off Hawaiian islands and from Antarctic ice were measured by instrumental neutron activation analysis (INAA) using Kyoto University Reactor (KUR). Iron, cobalt, nickel, iridium, scandium and manganese contents in those spherules were determined to be 19.3-97.7%, 23-4370 mg·kg-1, 0.08-7.04%, 0.84-35.4 mg·kg-1, 1.4-44.3 mg·kg-1 and 93.4 mg·kg-1-7.2 %, respectively, and compared with each other. Particularly, iridium was detected in seven spherules among fourteen from Hawaii, but only one spherule among twenty-two from Antarctic, and those spherules turned out to be extraterrestrial in origin. However, it was shown that there was little difference in characteristics of elemental contents between both kinds of spherules, except for Ir-detected spherules.

本文言語English
ページ(範囲)447-450
ページ数4
ジャーナルJournal of Radioanalytical and Nuclear Chemistry
272
3
DOI
出版ステータスPublished - 2007 6
外部発表はい

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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