Simultaneous determination of free fluoride and monofluorophosphate in toothpaste by capillary electrophoresis with capacitively coupled contactless conductivity detection

dc.creatorGuimaraes, IC
dc.creatorRezende, CC
dc.creatorda Silva, JAF
dc.creatorde Jesus, DP
dc.date2009
dc.date42156
dc.date2014-11-18T14:19:18Z
dc.date2015-11-26T17:51:03Z
dc.date2014-11-18T14:19:18Z
dc.date2015-11-26T17:51:03Z
dc.date.accessioned2018-03-29T00:34:25Z
dc.date.available2018-03-29T00:34:25Z
dc.identifierTalanta. Elsevier Science Bv, v. 78, n. 41763, n. 1436, n. 1439, 2009.
dc.identifier0039-9140
dc.identifierWOS:000266055400035
dc.identifier10.1016/j.talanta.2009.02.041
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74205
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/74205
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74205
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289872
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCapillary electrophoresis (CE) with capacitively coupled contactless conductivity detection (C(4)D) was used for rapid, accurate and simultaneous determination of free fluoride and monofluorophosphate(MFP) in six different toothpaste samples. A buffer solution containing 15 mmol L(-1) histine, 25 mmol L(-1) lactic acid, and 2.5 mmol L(-1) tetradecyltrimethylammonium bromide (TTAB) was used as background electrolyte (BGE). A complete separation of the analytes and the internal standard (tartrate) could be attained in less than 2.5 min. The limits of detection (LOD) and quantification (LOQ) were, respectively, 0.17 and 0.57 mg L(-1) for free fluoride and 0.70 and 2.33 mg L(-1) for MFP. Recoveries ranging from 85 to 107% were obtained for samples spiked with standard solutions of free fluoride or MFR The CE-C(4)D method was compared to an ion-selective electrode (ISE) method and the results were in good agreement. More importantly, the CE-C(4)D method demonstrates the advantage of being able to determine MFP without a prior hydrolysis step. (C) 2009 Elsevier B.V. All Fights reserved.
dc.description78
dc.description41763
dc.description1436
dc.description1439
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionFundo de Apoio ao Ensino
dc.descriptionPesquisa e a Extensao da Unicamp (FAEPEX-Unicamp)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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.subjectCapillary electrophoresis
dc.subjectCapacitively coupled contactless conductivity detection
dc.subjectToothpaste
dc.subjectFree fluoride
dc.subjectMonofluorophosphate
dc.subjectIndirect Photometric Detection
dc.subjectSodium Monofluorophosphate
dc.subjectInorganic-ions
dc.subjectSeparation
dc.subjectPolyphosphates
dc.subjectChromatography
dc.subjectCations
dc.subjectAnions
dc.titleSimultaneous determination of free fluoride and monofluorophosphate in toothpaste by capillary electrophoresis with capacitively coupled contactless conductivity detection
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución