Determination of nickel in fuel ethanol using a carbon paste modified electrode containing dimethylglyoxime

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:25:53Z
dc.date.available2014-05-20T15:25:53Z
dc.date.created2014-05-20T15:25:53Z
dc.date.issued2006-10-01
dc.identifierMicrochimica Acta. Wien: Springer Wien, v. 155, n. 3-4, p. 397-401, 2006.
dc.identifier0026-3672
dc.identifierhttp://hdl.handle.net/11449/36213
dc.identifier10.1007/s00604-006-0638-2
dc.identifierWOS:000241356200007
dc.identifier0072173018005712
dc.description.abstractA mercury-free electrode chemically modified with carbon paste containing dimethylglyoxime was used for determination of nickel in fuel ethanol. The instrumental parameters and composition of the modified paste were optimized. The analytical curve for nickel determination from 5.0 x 10(-9) to 5.0 x10(-7) mol(-1) was obtained using 25 min of accumulation time. The detection limit and amperometric sensitivity obtained for this method were 2.7 x 10 mol(-1) and 5.2 x 10(8) mu A mol(-1) L, respectively. The values for nickel concentration in four commercial samples of fuel ethanol were obtained in the range of 1.1 x 10(-8) to 6.9 x 10(-8) mol(-1). A comparison to graphite furnace atomic absorption spectrometry (GFAAS) was performed for nickel determination in commercial samples of ethanol.
dc.languageeng
dc.publisherSpringer
dc.relationMicrochimica Acta
dc.relation5.705
dc.relation1,240
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectnickel
dc.subjectfuel ethanol
dc.subjectchemically modified electrode
dc.subjectdimethylglyoxime
dc.subjectdifferential pulse voltammetry
dc.titleDetermination of nickel in fuel ethanol using a carbon paste modified electrode containing dimethylglyoxime
dc.typeArtículos de revistas


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