15 The electroanalytical technique Absence of Gradients and Nernstian Equilibrium 16 Stripping (AGNES) has been extended by applying stripping chronopotentiometry 17 (SCP) as the reoxidation stage in the determination of the free concentration of Zn 2+ , 18 Cd 2+ and Pb 2+ . This new approach, called AGNES-SCP, has been implemented with 19 screen-printed electrodes (SPE) and the standard Hangin...

Adsorption is the net accumulation of a chemical species at the interface between a solid phase and an aqueous solution phase, leading to a loss from the solution phase (Sposito, 1989). Adsorption reactions can be described by various models. Empirical models provide descriptions of adsorption data without theoretical basis. Examples are the distribution coefficient, the Freundlich adsorption i...

Column-leaching and pilot-scale experiments were conducted to evaluate the use of biosolids (sewage sludges) to control the mobilization of metals from contaminated soils with smelting slags. The pilot-scale experiments using amended soils showed that Cu, Pb and Sb were retained, decreasing their concentrations from 250 g/L, 80 g/L and 6 g/L, respectively in the leachates of contaminated soi...

The bioaccessibility of metal(loid)s in ambient particulate matter (PM) has been recently used to represent the risk inhalation exposure. Nevertheless, different methodological factors affect values; among these, type and composition surrogate biological fluids liquid solid ratio have revealed be most important. To better understand how these aspects bioaccessibility, a reference material corre...