Nitrate and Phosphate ions (H2PO4-,HPO42-) adsorption were studied at the mercury / solution interface, by the measurements of the interfacial tension depending on the electrode potential and the salt concentration. In the presence of polylysine, the anionic adsorption is independent from the concentration. The polylysine eliminate the oxyanion effect in high charge for H2PO4- and NO3-. Any oxyanions adsorption is noticed by the addition of NaCl 0.5 M.
H. Ghabi, M. Dhahbi