Tiyogi NATH, Priyankar RAHA and Amitava RAKSHIT
pp. 9-14

Iodine is an essential element in soil-plant-atmosphere-animal continuum. In order to understand its behaviour in the soil, the sorption and desorption behaviour of iodine in alluvial soils of Varanasi was investigated in the present study. Further, the soil properties that govern iodine retention in soil, were also characterised. The rate and percentage of adsorption and desorption was higher in the University farm soil than from Kapsethi soil. The adsorption and desorption of iodine was very low and ranged between 1.4 to 4.0% for sorption and 1.35 to 4.10% for desorption. The higher sorption and desorption of iodine was due to strong correlation with particular soil properties like organic matter, clay and CaCO₃.

Key words: sorption, desorption, iodine, alluvial soils

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