Pedosphere 7(3): 193--198, 1997
ISSN 1002-0160/CN 32-1315/P
©1997 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Application of a kinetic multireaction model for studying metolachlor adsorption in soil
ZHU Hong-Xia1, MA Li-Wang2 and H. M. SELIM2
1 Institute of Soil Science, Academia Sinica, Nanjing 210008 (China)
2 Department of Agronomy, Louisiana State University, LA 70803 (USA)
ABSTRACT
      Metolachlor retention on a Sharkey clay soil was quantified using a kinetic batch method for different initial solution concentrations. Time-dependent adsorption was carried out by monitoring solution concentration at different reaction times. Adsorption was found to be highly kinetic in nature. Attempts were made to describe metolachlor retention based on a kinetic multireaction model which includes reversible and irreversible retention processes of the equilibrium and kinetic types. The predictive capability of the model for the description of experimental results for metolachlor retention was examined and proved to be adequate.
Key Words:  adsorption, kinetic multireaction model, metolachlor
Citation: Zhu, H. X., Ma, L. W. and Selim, H. M. 1997. Application of a kinetic multireaction model for studying metolachlor adsorption in soil. Pedosphere. 7(3): 193-198.
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