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Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography

2002Journal article Open access
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dc.contributor.authorOliva-Teles, Maria Teresa
dc.contributor.authorPaíga, Paula
dc.contributor.authorDelerue-Matos, Cristina
dc.contributor.authorAlvim-Ferraz, Maria da Conceição M.
dc.date.accessioned2013-11-27T12:29:38Z
dc.date.available2013-11-27T12:29:38Z
dc.date.issued2002
dc.description.abstractFormaldehyde is a toxic component that is present in foundry resins. Its quantification is important to the characterisation of the resin (kind and degradation) as well as for the evaluation of free contaminants present in wastes generated by the foundry industry. The complexity of the matrices considered suggests the need for separative techniques. The method developed for the identification and quantification of formaldehyde in foundry resins is based on the determination of free carbonyl compounds by derivatization with 2,4-dinitrophenylhydrazine (DNPH), being adapted to the considered matrices using liquid chromatography (LC) with UV detection. Formaldehyde determinations in several foundry resins gave precise results. Mean recovery and R.S.D. were, respectively, >95 and 5%. Analyses by the hydroxylamine reference method gave comparable results. Results showed that hydroxylamine reference method is applicable just for a specific kind of resin, while the developed method has good performance for all studied resins.por
dc.identifier.doi10.1016/S0003-2670(02)00130-7pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/2992
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.ispartofseriesAnalytica Chimica Acta; Vol.467, Issue 1-2
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0003267002001307#por
dc.subjectFoundry resinspor
dc.subjectFormaldehydepor
dc.subject2,4-Dinitrophenylhydrazinepor
dc.subjectLiquid chromatographypor
dc.titleDetermination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatographypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage103por
oaire.citation.startPage97por
oaire.citation.titleAnalytica Chimica Actapor
oaire.citation.volume467por
person.familyNamePaíga
person.familyNameDelerue-Matos
person.familyNameAlvim-Ferraz
person.givenNamePaula
person.givenNameCristina
person.givenNameMaria da Conceição
person.identifier1668889
person.identifier.ciencia-id331A-5D6A-D3C8
person.identifier.ciencia-id9A1A-43FB-5C27
person.identifier.ciencia-id621C-0AAB-ABF9
person.identifier.orcid0000-0002-9593-1355
person.identifier.orcid0000-0002-3924-776X
person.identifier.orcid0000-0001-8212-8718
person.identifier.ridQ-4930-2018
person.identifier.ridD-4990-2013
person.identifier.ridP-9868-2017
person.identifier.scopus-author-id6506638953
person.identifier.scopus-author-id6603741848
person.identifier.scopus-author-id6603921357
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication4a0677dc-0b54-4831-aa9a-4a73f0df911d
relation.isAuthorOfPublication09f6a7bd-2f15-42b0-adc5-04bd22210519
relation.isAuthorOfPublicationa9196bc3-6bc6-4270-8407-39356ba909b0
relation.isAuthorOfPublication.latestForDiscovery4a0677dc-0b54-4831-aa9a-4a73f0df911d

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