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Evaluation of the adsorption properties of topsoils of Dong Nai province (Vietnam)

The features of the adsorption properties of various types of topsoils of the province of Dong Nai Vietnam are presented. Three types of near-surface deposits are distinguished Ferrasol, Luvisol and Akrisol, differing in their mechanical and chemical composition, pH value. Experiments were carried out to study the adsorption properties of these topsoils conditions of static sorption. The ICP-MS atomic adsorption spectroscopy method was used to determine the concentration of ions metal in solution after filtering. The results showed that the topsoils adsorbs arsenic and lead as much as possible. For certain types of topsoils, the features of adsorption ability were revealed, which is most manifested for the type of Luvisol, then Ferrasol and then Acrisol. The ability to adsorb heavy metals of Luvisols decreases in the following order: As > Pb > Cu > Cd > Zn. Ferrasols in the order of As > Pb > Zn > Cd > Cu. Acrisols in the order of Pb > As > Cu > Cd &...