Chemical composition and radioactivity in hokutolite (Plumbian barite) collected at Peito hot spring, Taiwan

Noriyuki Momoshima, Junichi Nita, Yonezo Maeda, Shinji Sugihara, Isamu Shinno, Nobuaki Matsuoka, Chin Wang Huang

研究成果: ジャーナルへの寄稿記事

17 引用 (Scopus)

抄録

Chemical composition and radionuclide concentrations were determined for hokutolite, plumbian barite, collected at Peito hot spring, Taiwan. The hokutolite, precipitated on the surface of the base rock, was scraped into 20 layers from the surface. Barium and Pb were determined by inductively coupled plasma-atomic emission spectroscopy, and 228Ra, 226Ra and 210Pb were determined by γ-ray spectrometry. Comparison of the 228Ra/226Ra activity ratio at the surface of the hokutolite with that of the hot spring water suggests that the hokutolite has been isolated from the stream for 60 years. Significantly low fractions of (Ba, Pb) SO4 and changes in Ba/Pb mole ratio in the middle layers of the hokutolite suggest a change of growth condition at that time. Using the smooth and continuous decline in 228Ra/226Ra activity ratio observed in the upper layers of the hokutolite, the growth rate of 0.17 mm year-1 was estimated.

元の言語英語
ページ(範囲)85-99
ページ数15
ジャーナルJournal of Environmental Radioactivity
37
発行部数1
DOI
出版物ステータス出版済み - 1 1 1997

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Barium Sulfate
Hot springs
Hot Springs
Barite
Radioactivity
barite
thermal spring
Taiwan
radioactivity
chemical composition
Atomic Spectrophotometry
Barium
Growth
Chemical analysis
Radioisotopes
Atomic emission spectroscopy
atomic emission spectroscopy
Spectrum Analysis
spring water
Inductively coupled plasma

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

これを引用

Chemical composition and radioactivity in hokutolite (Plumbian barite) collected at Peito hot spring, Taiwan. / Momoshima, Noriyuki; Nita, Junichi; Maeda, Yonezo; Sugihara, Shinji; Shinno, Isamu; Matsuoka, Nobuaki; Huang, Chin Wang.

:: Journal of Environmental Radioactivity, 巻 37, 番号 1, 01.01.1997, p. 85-99.

研究成果: ジャーナルへの寄稿記事

Momoshima, Noriyuki ; Nita, Junichi ; Maeda, Yonezo ; Sugihara, Shinji ; Shinno, Isamu ; Matsuoka, Nobuaki ; Huang, Chin Wang. / Chemical composition and radioactivity in hokutolite (Plumbian barite) collected at Peito hot spring, Taiwan. :: Journal of Environmental Radioactivity. 1997 ; 巻 37, 番号 1. pp. 85-99.
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abstract = "Chemical composition and radionuclide concentrations were determined for hokutolite, plumbian barite, collected at Peito hot spring, Taiwan. The hokutolite, precipitated on the surface of the base rock, was scraped into 20 layers from the surface. Barium and Pb were determined by inductively coupled plasma-atomic emission spectroscopy, and 228Ra, 226Ra and 210Pb were determined by γ-ray spectrometry. Comparison of the 228Ra/226Ra activity ratio at the surface of the hokutolite with that of the hot spring water suggests that the hokutolite has been isolated from the stream for 60 years. Significantly low fractions of (Ba, Pb) SO4 and changes in Ba/Pb mole ratio in the middle layers of the hokutolite suggest a change of growth condition at that time. Using the smooth and continuous decline in 228Ra/226Ra activity ratio observed in the upper layers of the hokutolite, the growth rate of 0.17 mm year-1 was estimated.",
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AU - Sugihara, Shinji

AU - Shinno, Isamu

AU - Matsuoka, Nobuaki

AU - Huang, Chin Wang

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AB - Chemical composition and radionuclide concentrations were determined for hokutolite, plumbian barite, collected at Peito hot spring, Taiwan. The hokutolite, precipitated on the surface of the base rock, was scraped into 20 layers from the surface. Barium and Pb were determined by inductively coupled plasma-atomic emission spectroscopy, and 228Ra, 226Ra and 210Pb were determined by γ-ray spectrometry. Comparison of the 228Ra/226Ra activity ratio at the surface of the hokutolite with that of the hot spring water suggests that the hokutolite has been isolated from the stream for 60 years. Significantly low fractions of (Ba, Pb) SO4 and changes in Ba/Pb mole ratio in the middle layers of the hokutolite suggest a change of growth condition at that time. Using the smooth and continuous decline in 228Ra/226Ra activity ratio observed in the upper layers of the hokutolite, the growth rate of 0.17 mm year-1 was estimated.

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