Modeling a new fixed-time batch approach for Mo(VI) determination

dc.creatorde Andrade, JC
dc.creatorFalcao, ADA
dc.creatorMay, GM
dc.creatorCoscione, AR
dc.date2007
dc.date2014-11-18T09:45:05Z
dc.date2015-11-26T17:49:02Z
dc.date2014-11-18T09:45:05Z
dc.date2015-11-26T17:49:02Z
dc.date.accessioned2018-03-29T00:32:04Z
dc.date.available2018-03-29T00:32:04Z
dc.identifierAnalytical Letters. Taylor & Francis Inc, v. 40, n. 5, n. 947, n. 959, 2007.
dc.identifier0003-2719
dc.identifierWOS:000245466800009
dc.identifier10.1080/00032710600867648
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/82467
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/82467
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/82467
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289288
dc.descriptionA fixed-time batch approach for molybdenum determination using iodide oxidation by hydrogen peroxide is presented. The iodine formed was extracted in situ with chloroform, and the absorbance readings were performed at 510 nm. This extraction procedure allowed us to 'freeze' the reaction at any preset time up to two hours, permitting a detailed investigation of the principal and interaction effects among the variables Mo(VI), H2SO4, H2O2, and KI, for the noncatalyzed and the Mo-catalyzed reactions. Response surface methodology was employed to model this chemical system and to find its optimized conditions, resulting in a 12-fold increase in method sensitivity. A reference material (Mussel) from the National Institute for Environmental Studies (NIES, Japan), run under the proposed conditions, gave results in good agreement with the reference value reported for molybdenum.
dc.description40
dc.description5
dc.description947
dc.description959
dc.languageen
dc.publisherTaylor & Francis Inc
dc.publisherPhiladelphia
dc.publisherEUA
dc.relationAnalytical Letters
dc.relationAnal. Lett.
dc.rightsfechado
dc.rightshttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dc.sourceWeb of Science
dc.subjectmodeling
dc.subjectin situ extraction
dc.subjectkinetic-catalytic reaction
dc.subjectmolybdenum determination
dc.subjectAutomated Catalytic Method
dc.subjectHydrogen-peroxide
dc.subjectMolybdenum
dc.subjectPlants
dc.subjectOxidation
dc.subjectKinetics
dc.subjectIodide
dc.subjectIon
dc.titleModeling a new fixed-time batch approach for Mo(VI) determination
dc.typeArtículos de revistas


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