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Effect of Cr(Ⅵ) and p-Chloroaniline Interaction on Their Reaction Behaviors on Soil ColloidsEnglish Full Text

ZHOU DONGMEI and CHEN HUAIMAN(Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences,Nanjing 21O008 (China))(Received April 14, 1999; revised June 8, 1999)

Abstract: Adsorption of Cr(Ⅵ) and p-chloroaniline on three typical soil colloids and pH influence were studied using batch equilibrium method. Both of Cr(Ⅵ) and p-chloroaniline adsorption on the colloids could be well described by general adsorption simulation equations. The adsorption processes changed with media pH. When Cr(Ⅵ) and p-chloroaniline coexisted on soil colloids, their interactions could be observed in a certain pH range to be accompanied with Cr(Ⅵ) reduction, which clearly suggested that a surface catalytic reaction occurred in this system. Soil colloid acted as an efficient catalyst for the interaction of Cr(Ⅵ) and p-chloroaniline. The pH values at which no interaction was observed were 4.0, 4.5 and 5.0 for the colloids of indigotic black soil, yellow-brown soil and latosol, respectively. Capillary electrophoresis used to analyze p-chloroaniline provided a high separation efficiency and short separation time, and needed no more extensive pretreatment of samples.
  • Series:

    (D) Agriculture

  • Subject:

    Fundamental Science of Agriculture; Agronomy

  • Classification Code:

    S153.3

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