長野県中房温泉産のケイ華中のヒ素  [in Japanese] Arsenic in siliceous sinters from Nakabusa Hog Springs, Nagano Prefecture  [in Japanese]

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Author(s)

    • 三宅 徹 MIYAKE Tohru
    • 東京工業大学大学院総合理工学研究科 Graduate School at Nagatsuta, Tokyo Institute of Technology
    • 鶴見 実 TSURUMI Makoto
    • 東京工業大学大学院総合理工学研究科 Graduate School at Nagatsuta, Tokyo Institute of Technology

Abstract

Up to 100 ppm of As was found in siliceous sinters from Nakabusa Hot Springs, despite a low As concentration (0.16 mg/l) in sinter-depositing thermal waters. In the sinters, As is strongly correlated with Ca, but not with Al, which is considered as being capable of adsorbing As. Evidently As-adsorbing sites on Al were blocked by Na and Ca ions. Excess Ca in the sinters may be present as CaCO<sub>3</sub>, as the waters are supersaturated with aragonite. CaCO<sub>3</sub> behaves as an effective collector of finely dispersed As precipitates, thus leading to the formation of As-enriched sinters. This conclusion is supported by the fact that Ca and As were dissolved simultaneously by mild acid leaching of powdered sinter samples.

Journal

  • Chikyukagaku

    Chikyukagaku 22(2), 157-161, 1988

    The Geochemical Society of Japan

Cited by:  1

Codes

  • NII Article ID (NAID)
    110008679823
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0386-4073
  • NDL Article ID
    3216838
  • NDL Source Classification
    ME34(水文学--陸水)
  • NDL Source Classification
    ZM41(科学技術--地球科学)
  • NDL Call No.
    Z15-645
  • Data Source
    CJPref  NDL  NII-ELS  J-STAGE 
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