This complexing agent is well known to form strong complexes with trivalent and tetravalent ions of lanthanides and actinides. After this preliminary work, the study is devoted to the complexometric titration of Eu solutions by PWO in perchlorate medium. These values are in agreement with complexation constant of others 4f and 5f transition cations by PWO published in older works. S. Ahmad, M. Daud and N. Khalid Adsorption Studies of Radioactive Silver Using Mineral Mixture, p. 167 Summary. The adsorption behavior of mineral mixture for silver ions from aqueous solutions has been carried out as a function of appropriate electrolyte, equilibration time, amount of adsorbent, concentration of adsorbate, effect of diverse ions and temperature in order to simulate the best conditions in which this material can be used as an adsorbent.
Studies show that the adsorption decreases with an increase in the concentrations of all the acids.