Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.22/2992 |
Resumo: | Formaldehyde 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. |
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Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatographyFoundry resinsFormaldehyde2,4-DinitrophenylhydrazineLiquid chromatographyFormaldehyde 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.ElsevierRepositório Científico do Instituto Politécnico do PortoOliva-Teles, Maria TeresaPaíga, PaulaDelerue-Matos, CristinaAlvim-Ferraz, Maria da Conceição M.2013-11-27T12:29:38Z20022002-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.22/2992eng10.1016/S0003-2670(02)00130-7info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-13T12:42:40Zoai:recipp.ipp.pt:10400.22/2992Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:24:00.971602Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography |
title |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography |
spellingShingle |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography Oliva-Teles, Maria Teresa Foundry resins Formaldehyde 2,4-Dinitrophenylhydrazine Liquid chromatography |
title_short |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography |
title_full |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography |
title_fullStr |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography |
title_full_unstemmed |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography |
title_sort |
Determination of free formaldehyde in foundry resins as its 2,4-dinitrophenylhydrazone by liquid chromatography |
author |
Oliva-Teles, Maria Teresa |
author_facet |
Oliva-Teles, Maria Teresa Paíga, Paula Delerue-Matos, Cristina Alvim-Ferraz, Maria da Conceição M. |
author_role |
author |
author2 |
Paíga, Paula Delerue-Matos, Cristina Alvim-Ferraz, Maria da Conceição M. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Politécnico do Porto |
dc.contributor.author.fl_str_mv |
Oliva-Teles, Maria Teresa Paíga, Paula Delerue-Matos, Cristina Alvim-Ferraz, Maria da Conceição M. |
dc.subject.por.fl_str_mv |
Foundry resins Formaldehyde 2,4-Dinitrophenylhydrazine Liquid chromatography |
topic |
Foundry resins Formaldehyde 2,4-Dinitrophenylhydrazine Liquid chromatography |
description |
Formaldehyde 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. |
publishDate |
2002 |
dc.date.none.fl_str_mv |
2002 2002-01-01T00:00:00Z 2013-11-27T12:29:38Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.22/2992 |
url |
http://hdl.handle.net/10400.22/2992 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/S0003-2670(02)00130-7 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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1799131334757580800 |