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黄棕壤和红壤吸附磷酸根后对Zn2+和Cd2+次级吸附的动力学

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董元彦, 罗厚庭, 李学垣. 黄棕壤和红壤吸附磷酸根后对Zn2+和Cd2+次级吸附的动力学[J]. 环境化学, 1995, 14(4): 300-305.
引用本文: 董元彦, 罗厚庭, 李学垣. 黄棕壤和红壤吸附磷酸根后对Zn2+和Cd2+次级吸附的动力学[J]. 环境化学, 1995, 14(4): 300-305.
shu
Dong Yuanyan, Luo Houting, Li Xueyuan. KINETICS OF Zn2+ AND Cd2+ SECONDARY ADSORPTION ON YELLOW BROWN SOIL AND RED SOIL PRETREATED WITH PHOSPHATE[J]. Environmental Chemistry, 1995, 14(4): 300-305.
Citation: Dong Yuanyan, Luo Houting, Li Xueyuan. KINETICS OF Zn2+ AND Cd2+ SECONDARY ADSORPTION ON YELLOW BROWN SOIL AND RED SOIL PRETREATED WITH PHOSPHATE[J]. Environmental Chemistry, 1995, 14(4): 300-305.
shu

黄棕壤和红壤吸附磷酸根后对Zn2+和Cd2+次级吸附的动力学

  • 1.

    华中农业大学, 武汉430070

  • 基金项目:

    中国科学院土壤圈物质循环开放实验室资助

KINETICS OF Zn2+ AND Cd2+ SECONDARY ADSORPTION ON YELLOW BROWN SOIL AND RED SOIL PRETREATED WITH PHOSPHATE

  • 1.

    Huazhong Agricultural University, Wuhan, 430070

  • Fund Project:

  • 摘要: 本文用流动法考察湖北省黄棕壤和湖南省红壤吸附磷酸根后,对Zn2+和Cd2+次级吸附的动力学.结果表明、Zn2+和Cd+的次级吸附动力学可用一级方程拟合.初级吸附的磷酸根可造成黄棕壤对Zn2+和Cd2+次级吸附的速率下降;而红壤对Zn2+和Cd2+次级吸附的快反应速率下降,慢反应速率加大.Zn2+和cd2+浓度增高可加快次级吸附反应速率;升高温度也可增快次级吸附速率.扩散作用对Zn2+次级吸附的影响比对Cd2+的影响大.
    Abstract: A flow method was used to study the kinetics of Zn2+ and Cd2+ secondary adsorption on yellow brown soil and red soil, which were pretreated with phosphate. The results showed that the kinetics of Zn2+ and Cd2+ secondary adsorption could be described well with the first-order equation. The rate of Zn2+ and Cd2+ secondary adsorption on yellow brown soil was decreased because of phosphate elementary adsorption. For red soil the rate of fast reaction of Zn2+ and Cd2+ secondary adsorption was also decreased, but the rate of slow reaction was increased. The rate of secondary adsorption was increased with raising Zn2+ and Cd2+ concentration and temperature. The effect of diffusion on secondary adsorption of Zn2+ was greater than on that of and Cd2+.
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  • 收稿日期:  1994-01-22
董元彦, 罗厚庭, 李学垣. 黄棕壤和红壤吸附磷酸根后对Zn2+和Cd2+次级吸附的动力学[J]. 环境化学, 1995, 14(4): 300-305.
引用本文: 董元彦, 罗厚庭, 李学垣. 黄棕壤和红壤吸附磷酸根后对Zn2+和Cd2+次级吸附的动力学[J]. 环境化学, 1995, 14(4): 300-305.
shu
Dong Yuanyan, Luo Houting, Li Xueyuan. KINETICS OF Zn2+ AND Cd2+ SECONDARY ADSORPTION ON YELLOW BROWN SOIL AND RED SOIL PRETREATED WITH PHOSPHATE[J]. Environmental Chemistry, 1995, 14(4): 300-305.
Citation: Dong Yuanyan, Luo Houting, Li Xueyuan. KINETICS OF Zn2+ AND Cd2+ SECONDARY ADSORPTION ON YELLOW BROWN SOIL AND RED SOIL PRETREATED WITH PHOSPHATE[J]. Environmental Chemistry, 1995, 14(4): 300-305.
shu

黄棕壤和红壤吸附磷酸根后对Zn2+和Cd2+次级吸附的动力学

  • 1. 华中农业大学, 武汉430070
  • 收稿日期:  1994-01-22
基金项目:

中国科学院土壤圈物质循环开放实验室资助

摘要: 本文用流动法考察湖北省黄棕壤和湖南省红壤吸附磷酸根后,对Zn2+和Cd2+次级吸附的动力学.结果表明、Zn2+和Cd+的次级吸附动力学可用一级方程拟合.初级吸附的磷酸根可造成黄棕壤对Zn2+和Cd2+次级吸附的速率下降;而红壤对Zn2+和Cd2+次级吸附的快反应速率下降,慢反应速率加大.Zn2+和cd2+浓度增高可加快次级吸附反应速率;升高温度也可增快次级吸附速率.扩散作用对Zn2+次级吸附的影响比对Cd2+的影响大.

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