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土壤圈(英文版). 2000, (01)

Column Holdup Formula of Soil Solute TransportEnglish Full Text

WANG YU and ZHANG YIPING (Department of Resources and Environmental Sciences, Northwest Science and Technology University of Agriculture and Forestry, Yangling, Shaanxi 712100 (China))

Abstract: The shortcomings of the present two formulae for describing column holdup are analyzed and deductions are made to find a new formula. The column holdup, Hw, described by the new formula is dimensional, and related to soil solute transport kinesis and column physical properties. Compared with the other two column holdups, Hw is feasible to describe dimensional column holdup during solute transport process. The relationships between Hw and retardation factor, R, in different solute transport boundary conditions are established.
Keywords：

column holdup; retardation factor; soil solute transport;

  • Series：

    (D) Agriculture

  • Subject：

    Fundamental Science of Agriculture; Agronomy

  • Classification Code：

    S152

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