Evaluation of zirconium as a permanent chemical modifier using synchrotron radiation and imaging techniques for lithium determination in sediment slurry samples by ET AAS

dc.creatorFlores, AV
dc.creatorPerez, CA
dc.creatorArruda, MAZ
dc.date2004
dc.dateFEB 27
dc.date2014-11-17T08:58:41Z
dc.date2015-11-26T17:19:18Z
dc.date2014-11-17T08:58:41Z
dc.date2015-11-26T17:19:18Z
dc.date.accessioned2018-03-29T00:06:59Z
dc.date.available2018-03-29T00:06:59Z
dc.identifierTalanta. Elsevier Science Bv, v. 62, n. 3, n. 619, n. 626, 2004.
dc.identifier0039-9140
dc.identifierWOS:000188705600024
dc.identifier10.1016/j.talanta.2003.09.003
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/66039
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/66039
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/66039
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1282873
dc.descriptionIn the present paper, lithium was determined in river sediment using slurry sampling and electrothermal atomic absorption spectrometry (ET AAS) after L'vov platform coating with zirconium (as a permanent chemical modifier). The performance of this modifier and its distribution on the L'vov platform after different heating cycles were evaluated using synchrotron radiation X-ray fluorescence (SRXRF) and imaging scanning electron microscopy (SEM) techniques. The analytical conditions for lithium determination in river sediment slurries were also investigated and the best conditions were obtained employing 1300 and 2300degreesC for pyrolysis and atomization temperatures, respectively. In addition, 100 mg of sediment samples were prepared using 4.0 mol l(-1) HNO3. The Zr-coating permitted lithium determination with good precision and accuracy after 480 heating cycles using the same platform for slurry samples. The sediment samples were collected from five different points of the Cachoeira river, S (a) over tildeo Paulo, Brazil. The detection and quantification limits were, respectively, 0.07 and 0.23 mug l(-1). (C) 2003 Elsevier B.V. All rights reserved.
dc.description62
dc.description3
dc.description619
dc.description626
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.subjectlithium
dc.subjectriver sediment
dc.subjectelectrothermal atomic absorption spectrometry
dc.subjectsynchrotron radiation X-ray fluorescence
dc.subjectpermanent chemical modifier
dc.subjectAtomic-absorption-spectrometry
dc.subjectElectrothermal Atomization
dc.subjectFactorial Design
dc.subjectGraphite Tubes
dc.subjectOptimization
dc.subjectSpectroscopy
dc.subjectTungsten
dc.subjectBlood
dc.subjectSerum
dc.subjectLead
dc.titleEvaluation of zirconium as a permanent chemical modifier using synchrotron radiation and imaging techniques for lithium determination in sediment slurry samples by ET AAS
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución