Determination of nitrite in meat products and water using dapsone with combined spot test/diffuse reflectance on filter paper

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dc.contributor.authorMarques Luiz, Vitor Hugo [UNESP]
dc.contributor.authorPezza, Leonardo [UNESP]
dc.contributor.authorPezza, Helena Redigolo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:19:26Z
dc.date.available2014-05-20T14:19:26Z
dc.date.issued2012-10-15
dc.description.abstractThis paper describes a simple, portable and environmentally friendly procedure for the determination of nitrite by combined spot test/diffuse reflectance spectroscopy on filter-paper. The method is based on the diazotization reaction of dapsone (4,4'-diamino-diphenyl sulphone, DAP) and (naphthyl)ethylenediamine hydrochloride (NED) with nitrite in acidic medium, yielding a coloured compound on the surface of a filter paper. Experimental design methodologies were used to optimise the measurement conditions. The reflectometric measurements were carried out at 545 nm and the linear range obtained was 0.29-5.0 mg L-1 of nitrite (R = 0.997), with detection and quantification limits of 0.09 and 0.29 mg L-1, respectively. The proposed method was applied successfully to the analysis of nitrite in meat products and well water samples. (C) 2012 Elsevier Ltd. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista Julio de Mesquita Filho UN, Inst Quim, Araraquara, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista Julio de Mesquita Filho UN, Inst Quim, Araraquara, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdCNPq: 64/2008
dc.format.extent2546-2551
dc.identifierhttp://dx.doi.org/10.1016/j.foodchem.2012.04.068
dc.identifier.citationFood Chemistry. Oxford: Elsevier B.V., v. 134, n. 4, p. 2546-2551, 2012.
dc.identifier.doi10.1016/j.foodchem.2012.04.068
dc.identifier.issn0308-8146
dc.identifier.lattes5978908591853524
dc.identifier.lattes3192125098361121
dc.identifier.orcid0000-0003-0197-7369
dc.identifier.urihttp://hdl.handle.net/11449/25866
dc.identifier.wosWOS:000305859800113
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofFood Chemistry
dc.relation.ispartofjcr4.946
dc.relation.ispartofsjr1,793
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectNitriteen
dc.subjectDiffuse reflectanceen
dc.subjectFilter paperen
dc.subjectMeat productsen
dc.subjectWell wateren
dc.titleDetermination of nitrite in meat products and water using dapsone with combined spot test/diffuse reflectance on filter paperen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes5978908591853524
unesp.author.lattes3192125098361121
unesp.author.orcid0000-0003-0197-7369[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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