title: Comments on "factors influencing the removal of divalent cations by hydroxyapatite".
abstract: Recently, Smiciklas et al. [I. Smiciklas, A. Onjia, S. Raicević, Dj. Janaćković, M. Mitrić, J. Hazard. Mater. 152 (2008) 876-884)] have reported on the effect of pH, contact time, initial metal concentration and presence of common competing cations on hydroxyapatite sorption properties towards Pb(2+), Cd(2+), Zn(2+) and Sr(2+) ions. However, application of some experimental procedures and methods, as well as the presentation and interpretation of some data is problematic or erroneous.
authors.affiliation: The Vinca Institute of Nuclear Sciences, P.O. Box 522, 11001 Belgrade, Serbia. smiloni@vin.bg.ac.yu
authors.forename: Slobodan K
authors.initials: SK
authors.lastname: Milonjić
mesh_terms: D002413:Cations, Divalent / Q000302:isolation & purification*; D017886:Durapatite / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration
chemical_list: D002413:Cations, Divalent; D017886:Durapatite