Zirconium and hafnium determination by energy dispersive X-ray fluorescence with solid phase preconcentration

dc.creatorPeraltaZamora, P
dc.creatorCornejoPonce, L
dc.creatorBueno, MIMS
dc.creatorMartins, JW
dc.date1997
dc.dateMAY
dc.date2014-12-16T11:37:08Z
dc.date2015-11-26T17:27:27Z
dc.date2014-12-16T11:37:08Z
dc.date2015-11-26T17:27:27Z
dc.date.accessioned2018-03-29T00:14:36Z
dc.date.available2018-03-29T00:14:36Z
dc.identifierTalanta. Elsevier Science Bv, v. 44, n. 5, n. 811, n. 816, 1997.
dc.identifier0039-9140
dc.identifierWOS:A1997WZ86100012
dc.identifier10.1016/S0039-9140(96)02117-0
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/75977
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/75977
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/75977
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1284800
dc.descriptionTwo preconcentration methods has been developed for simultaneous determination of zirconium and hafnium by energy dispersive X-ray fluorescence (EDXRF). The first method is a liquid-solid extraction procedure with the use of an anionic exchange resin modified with xylenol orange. The second is a precipitation procedure carried out in the presence of lanthanum. Both methods permit significant enhancement of sensitivity in comparison with direct measurement in the aqueous phase. The applicability of both procedures for the preconcentration of Zr and Hf prior to their determination by EDXRF was demonstrated by analyzing synthetic mixtures and a sample of zirconium ore. The results obtained with the use of the modified resin show relative standard deviation of about 4% and good agreement with those obtained by spectrographic analysis. (C) 1997 Published by Elsevier Science B.V.
dc.description44
dc.description5
dc.description811
dc.description816
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationTalanta
dc.relationTalanta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjecthafnium
dc.subjectpreconcentration
dc.subjectX-ray fluorescence
dc.subjectzirconium
dc.subjectPre-concentration Methods
dc.subjectAnalytical-chemistry
dc.subjectTrace-elements
dc.subjectSpectrometry
dc.subjectSpectrophotometry
dc.subjectWater
dc.subjectResins
dc.titleZirconium and hafnium determination by energy dispersive X-ray fluorescence with solid phase preconcentration
dc.typeArtículos de revistas


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