dc.creatorMaratta Martínez, Sergio Ariel
dc.creatorVázquez, Sandra
dc.creatorLópez, Ayelén
dc.creatorAugusto, Miriam
dc.creatorPacheco, Pablo Hugo
dc.date.accessioned2018-09-21T17:28:00Z
dc.date.accessioned2018-11-06T11:24:39Z
dc.date.available2018-09-21T17:28:00Z
dc.date.available2018-11-06T11:24:39Z
dc.date.created2018-09-21T17:28:00Z
dc.date.issued2016-09
dc.identifierMaratta Martínez, Sergio Ariel; Vázquez, Sandra; López, Ayelén; Augusto, Miriam; Pacheco, Pablo Hugo; Lead preconcentration by solid phase extraction using oxidized carbon xerogel and spectrophotometric determination with dithizone; Elsevier Science; Microchemical Journal; 128; 9-2016; 166-171
dc.identifier0026-265X
dc.identifierhttp://hdl.handle.net/11336/60575
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1850981
dc.description.abstractThe proposed methodology is based on the preconcentration of Pb2+ on oxidized carbon xerogel, a porous material of low density and high surface area. Adsorbed Pb2+ was eluted with HCl, followed by complexion with dithizone in ethanol-water solution and determined by UV-visible spectrophotometry in a continuous flow system (FI). Variables such as pH, type of eluent, eluent concentration, type of complexing solvent, concentration of complexing reagent and flow rates were optimized. The proposed system reached an enrichment factor of 50, with 5 mL of sample. Detection limit was of 0.9 μg L-1, with a precision of 7.8% (n = 10). The proposed system was successfully applied to the determination of Pb in tap water from San Juan City, Argentina.
dc.languageeng
dc.publisherElsevier Science
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0026265X16300431
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.microc.2016.04.017
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectCARBON XEROGEL
dc.subjectDITHIZONE
dc.subjectLEAD
dc.subjectSPECTROPHOTOMETRIC DETERMINATION
dc.titleLead preconcentration by solid phase extraction using oxidized carbon xerogel and spectrophotometric determination with dithizone
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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