Campo DC | Valor | Idioma |
dc.contributor.author | Oliveira, Fábio Santos de | - |
dc.contributor.author | Sousa, Eliane Teixeira | - |
dc.contributor.author | Andrade, Jailson Bittencourt de | - |
dc.creator | Oliveira, Fábio Santos de | - |
dc.creator | Sousa, Eliane Teixeira | - |
dc.creator | Andrade, Jailson Bittencourt de | - |
dc.date.accessioned | 2014-01-14T16:45:33Z | - |
dc.date.issued | 2007 | - |
dc.identifier.issn | 0039-9140 | - |
dc.identifier.uri | http://repositorio.ufba.br/ri/handle/ri/14355 | - |
dc.description | Texto completo: acesso restrito. p. 561-566 | pt_BR |
dc.description.abstract | A sensitive FIA method was developed for the selective determination of formaldehyde in alcoholic beverages. This method is based on the reaction of Fluoral-P (4-amine-3-pentene-2-one) with formaldehyde, leading to the formation of 3,5-diacetyl-1,4-dihydrolutidine (DDL), which fluoresces at λex = 410 nm and λem = 510 nm. The analytical parameters were optimized by the response surface method using the Box–Behnken design. The proposed flow injection system allowed for the determination of up to 3.33 × 10−5 mol L−1 of formaldehyde with R.S.D. < 2.5% and a detection limit of 3.1 ng mL−1. The method was successfully applied to determine formaldehyde in alcoholic beverages, without requiring any sample pretreatment, and the results agreed with the reference at a 95% confidence level by paired t-test. In the optimized condition, the FIA system proved able to analyze up to 60 samples/h. | pt_BR |
dc.language.iso | en | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.source | http://dx.doi.org/10.1016/j.talanta.2007.04.027 | pt_BR |
dc.subject | Formaldehyde determination | pt_BR |
dc.subject | Alcoholic beverages | pt_BR |
dc.subject | Fluoral-P | pt_BR |
dc.subject | Box–Behnken design | pt_BR |
dc.title | A sensitive flow analysis system for the fluorimetric determination of low levels of formaldehyde in alcoholic beverages | pt_BR |
dc.title.alternative | Talanta | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 73, n. 3 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química)
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