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Adsorption Parameters of Cd(II), Pb(II), and Hg(II) on Zirconium(IV) Phosphate Chemically Grafted onto Silica Gel Surface by Noemi Nagata; Lauro T. Kubota; Maria I.M.S. Bueno; Patricio G. Peralta-Zamora is a scholarly article available to read on EtoBox.

What is Adsorption Parameters of Cd(II), Pb(II), and Hg(II) on Zirconium(IV) Phosphate Chemically Grafted onto Silica Gel Surface about?

have given rise to great interest for analytical purposes (12), Adsorption properties of metallic ions not essential for human since several evaluations have demonstrated that most of metabolism, such as cadmium, lead, and mercury, on silica chemthese materials show strong adsorption capacities and mainly ically modified with zirconium( IV ) phosphate, SiZrP, were invesselective characteristics, important for speciation (13). Sevtigated using batch systems. The immobilization procedure was eral investigations have demonstrated that modified materiefficient and the functionalization degree was 2.82% for zircoals are able to adsorb nonessential metal ions such as cadnium ( 0.31 mol g 01 ) and 2.54% for PO 30 4 (0.27 mol g 01 ) . These mium, lead, and mercury, which are potential pollutants. results indicate that phosphate reacted with zirconium in a 1:1 However, more emphasis has been given to silica modified ratio. The equilibrium is reached very quickly ( 15 min ) , indicatwith organic groups that are able to provide a great number ing that the adsortion sites are well exposed. The best adsorption parameters were evaluated using 50 mL of aqueous phase at pH of different materials (

Author

Noemi Nagata; Lauro T. Kubota; Maria I.M.S. Bueno; Patricio G. Peralta-Zamora

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

1998

Language

EN