Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/25193
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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleFactorial experimental design optimization of solid phase microextraction (SPME) conditions for analysis of butylated hydroxytoluene (BHT) in bottled waterpt_BR
dc.contributor.authorTombesi, Norma B.pt_BR
dc.contributor.authorFreije, Rubén H.pt_BR
dc.contributor.authorAugusto, Fabiopt_BR
unicamp.authorTombesi, Norma B.pt_BR
unicamp.authorFreije, Rubén H.pt_BR
unicamp.authorAugusto, Fabio Universidade Estatual de Campinas Estadual de Campinas Instituto de Químicapt_BR
dc.subjectSPMEpt_BR
dc.subjectGC-MSpt_BR
dc.subjectfactorial experimental designpt_BR
dc.subjectBHTpt_BR
dc.subjectbottled waterpt_BR
dc.description.abstractBHT is an antioxidant utilized as additive in some foods and in packaging plastics, and its presence in bottled mineral water is possible due to its migration from bottle walls to the contents. A factorial experimental design was utilized to obtain the optimum values for the main operational parameters in the analysis of butylated hydroxytoluene (BHT) in bottled water using headspace and direct solid-phase microextraction (SPME) in the pre-concentration step. The parameters optimized were sample pH, temperature and ionic strength. The separation, detection and quantitation of the extracts were performed by gas chromatography coupled to mass spectrometry. Preliminary experiments were made to select the best fiber for the extraction procedure. Polydimethylsiloxane (PDMS) fibers were selected, and the optimized methodology was successfully applied to the extraction and quantitation of BHT in real samples of mineral and mineralized bottled water.en
dc.description.abstractBHT é um antioxidante usado como aditivo em alguns alimentos e em plásticos de embalagens, e sua presença em água mineral engarrafada é possível devido à migração do aditivo contido nas paredes do recipiente. Planejamento fatorial foi empregado para determinar os valores ótimos para os parâmetros operacionais principais na análise de hidroxitolueno butilado (BHT) em água engarrafada usando microextração em fase sólida (SPME) direta e em headspace na etapa de pré-concentração. Os parâmetros otimizados foram pH, temperatura e força iônica da amostra. A separação, detecção e quantificação dos extratos foi efetuada por cromatografia gasosa acoplada a espectrometria de massas. Experimentos preliminares foram realizados para selecionar a melhor fibra para o procedimento de extração. Fibras de polidimethilsiloxano (PDMS) foram selecionadas, e a metodologia otimizada aplicada com sucesso na extração e quantificação de BHT em amostras reais de água mineral e mineralizada engarrafada.pt
dc.relation.ispartofJournal of the Brazilian Chemical Societypt_BR
dc.publisherSociedade Brasileira de Químicapt_BR
dc.date.issued2004-10-01pt_BR
dc.identifier.citationJournal of the Brazilian Chemical Society. Sociedade Brasileira de Química, v. 15, n. 5, p. 658-663, 2004.pt_BR
dc.language.isoenpt_BR
dc.description.firstpage658pt_BR
dc.description.lastpage663pt_BR
dc.rightsabertopt_BR
dc.sourceSciELOpt_BR
dc.identifier.issn0103-5053pt_BR
dc.identifier.idScieloS0103-50532004000500008pt_BR
dc.identifier.doi10.1590/S0103-50532004000500008pt_BR
dc.identifier.urlhttp://dx.doi.org/10.1590/S0103-50532004000500008pt_BR
dc.identifier.urlhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000500008pt_BR
dc.date.available2014-07-17T17:20:00Z
dc.date.available2015-11-26T11:55:49Z-
dc.date.accessioned2014-07-17T17:20:00Z
dc.date.accessioned2015-11-26T11:55:49Z-
dc.description.provenanceMade available in DSpace on 2014-07-17T17:20:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2004-10-01en
dc.description.provenanceMade available in DSpace on 2015-11-26T11:55:49Z (GMT). No. of bitstreams: 2 S0103-50532004000500008.pdf: 135676 bytes, checksum: 943a110f8428816b7e7b719e84d5d2c9 (MD5) S0103-50532004000500008.pdf.txt: 23394 bytes, checksum: 2f2f19302d621a7de033db6a288f1722 (MD5) Previous issue date: 2004-10-01en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/25193
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/25193-
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