関東ロームを母材とする水田土壌中の化学元素の分布と移動  [in Japanese] Distribution and migration of chemical elements in paddy soil derived from Kanto loam  [in Japanese]

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Author(s)

    • 上野 広行 UENO Hiroyuki
    • 東京工業大学大学院総合理工学研究科化学環境工学専攻:(現)東京都環境科学研究所大気部 Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology: (Present address) The Tokyo Metropolitan Research Institute for Environmental Protection
    • 鶴見 実 TSURUMI Makoto
    • 東京工業大学大学院総合理工学研究科化学環境工学専攻 Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology
    • 一國 雅巳 ICHIKUNI Masami
    • 東京工業大学大学院総合理工学研究科化学環境工学専攻:(現)埼玉大学工学部環境化学工学科 Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology: (Present address) Department of Environmental Chemistry, Saitama University

Abstract

The vertical distribution patterns of the major and trace elements in the paddy soils derived from weathered volcanic ashes (Kanto loam) were investigated to estimate the relative mobilities of the elements in the paddy environment. The mobilities were evaluated in terms of the ratios of elemental concetration in paddy soil to elemental concentration in Kanto loam, using Al as a reference element. The elements studied were classified into 3 groups: immobile, mobile and anthropogenic elements. Immobile elements, represented by Cu, Cr, V, Li, Sc, La and Sm, are either captured by the minerals resistant to weathering or strongly adsorbed on soil organic matter and/or clay minerals. Mobile elements are exemplified by Fe, Mn, Co and Ni. Their mobilization is due to the reduction and solubilization of insoluble oxides under reducing conditions, and can be described as a function of ionic radius of solubilized divalent ions. Anthropogenic elements include P, As and Zn, which are characteristically enriched in the topsoil. P is applied to the paddy as fertilizer, and As and Zn are possible impurities in the fertilizers. The importance of the mobility data of the elements in the environmental studies is also discussed.

Journal

  • Chikyukagaku

    Chikyukagaku 26(2), 83-94, 1993

    The Geochemical Society of Japan

Cited by:  2

Codes

  • NII Article ID (NAID)
    110008679866
  • NII NACSIS-CAT ID (NCID)
    AN00141280
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0386-4073
  • NDL Article ID
    3813484
  • NDL Source Classification
    RB13(農産--土壌・肥料)
  • 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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