ACTA AGRICULTURAE BOREALI-SINICA ›› 1998, Vol. 13 ›› Issue (2): 75-81. doi: 10.3321/j.issn:1000-7091.1998.02.014

Special Issue: Soil fertilizer

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Competitive Adsorption of Fluoride, Phosphate and Sulphate to Some Soils Derived From Granite

Shen Alin1   

  1. Soil and Fertilizer Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002)Yao Tongshan(Second Department of Planning,Huanghe River Conservancy Committee,Zhengzhou 450003
  • Received:1996-06-05 Published:1998-06-28

Abstract: The adsorption of fluoride and its competitive adsorption with phosphate or sulphate on 5 kinds of soils derived from granite,in middle south China,were studied.Results indicated that:(1) The amount of fluoride adsorption increased with the increasing of flouride concentration and the pH value of equilibrium solution raised with the releasing of OH - in the process of F - adsorption.The order of F - adsorption capacity was as follows:red soil>lateritic soil>yellow brown soil and latosol.The trial data of F - adsorption in the examined soils significantly well conformed to the Langmuir,Freundlich and Temkin equations(r=0.9552-0.998**).(2)There was a competitive adsorption among fluoride,phosphate and sulphate,and the amount of soil adsorption of fluoride could be raised with the occurrence of phosphate or sulphate.The effect of phosphate on soil adsorption of fluoride was more remarkable than that of sulphate.

Key words: Middle south China, Granite, Adsorption of fluoride, Competitive adsorption of anion, H2PO4-, SO42-

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Cite this article

Shen Alin. Competitive Adsorption of Fluoride, Phosphate and Sulphate to Some Soils Derived From Granite[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(2): 75-81. doi: 10.3321/j.issn:1000-7091.1998.02.014.

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