Adsorption of atrazine on selected vertisols and alfisols.
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Date
2012-07
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Abstract
Adsorption of atrazine was studied on two Vertisols and two Alfisols varying in their physicochemical
properties. Soils were equilibrated with various concentrations of atrazine using batch techniques.
Adsorption affinity for atrazine was approximated by Freundlich constant (Kf), which is a measure of the strength or
degree of adsorption. Kd values were calculated for atrazine despite some non-linearity in adsorption on both
Vertisols and Alfisols. The Kd values are greater for Vertisols than Alfisols and increased with organic carbon
content. Correlations were worked out between extent of adsorption and soil properties and were positively
correlated with organic carbon (r = 0.688), clay content ( r = 0.712) and clay + organic carbon (r = 0.708). KOC
values were calculated taking into account the organic carbon content for both Vertisols and Alfisols.
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Keywords
Atrazine, Vertisols, Alfisols
Citation
Madhuri K V Naga, Rao P Chandrasekhar, Rao M Subba, Prathima T, Kumar K Vijay Krishna, Reddy B Ravindra, Giridhar V. Adsorption of atrazine on selected vertisols and alfisols. International Journal of Applied Biology and Pharmaceutical Technology. 2012 Jul-Sept; 3(3): 270-274.