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Sorption study of tribenuron‐methyl onto apatite minerals

The sorption process of tribenuron‐methyl, which is a sulfonylurea herbicide, on the hydroxyapatite and fluoroapatite minerals has been studied using batch method. Desorption of this pesticide from the solid is also investigated using column method. From UV‐visible data, it was found that the pesticide was more removed with the hydroxyapatite than with fluoroapatite samples. Using 1 g of HAp and of FAp, the maximum removed amount of tribenuron methyl from a solution of 2.5 × 10−4mol/L was respectively 1.65 × 10−4mol/L and 0.53 × 10−4mol/L. This is related to the specific surface area and to the solubility of minerals.