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|Titre: ||Pre-concentration and separation of Fe (III), Co (II), Ni (II) and Zn (II) by solid-phase extraction using silica modified with N-propylsalicylaldimine|
|Auteur(s): ||Hamed, M.A.|
|mot-clé ASFA: ||Copper|
|Date de publication: ||2005|
|Référence bibliographique: ||Egyptian Journal of Aquatic Research, 31(1). p. 31-41|
|Résumé: ||N- propylsalicylaldimine based on porous silica, as ion exchanger, was used for the separation and preconcentration of Fe3+, Co2+, Ni2+ and Zn2+ from surface water samples collected from eleven locations at Nile river, Mediterranean and Red seas as well as tap water of Mansoura city.
The effects of pH value, time of stirring, concentration of eluting acids and some
common ionic species on the separation and preconcentration of the investigated metal ions in synthetic aqueous solutions were studied. The results indicate that the optimum conditions for separation are pH = 9.0-9.5 and time of stirring = 30 min. HCl is better eluent for the investigated metal ions than HNO3 except for Fe3+. Citrate and EDTA gave
severe interference on the recovery of the metal ions therefore the water samples were previously oxidized to digest organic matter prior to the application process.|
|Description: ||this paper is published by the Egyptian Journal of Aquatic Research - National Institute of Oceanography and fisheries, Alexandria, Egypt|
|Collection(s) :||Egyptian Journal of Aquatic Research|
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