https://repositorio.ufba.br/handle/ri/6084
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Gaujac, Alain | - |
dc.contributor.author | Emídio, Elissandro Soares | - |
dc.contributor.author | Navickiene, Sandro | - |
dc.contributor.author | Ferreira, Sergio Luis Costa | - |
dc.contributor.author | Dórea, Haroldo Silveira | - |
dc.creator | Gaujac, Alain | - |
dc.creator | Emídio, Elissandro Soares | - |
dc.creator | Navickiene, Sandro | - |
dc.creator | Ferreira, Sergio Luis Costa | - |
dc.creator | Dórea, Haroldo Silveira | - |
dc.date.accessioned | 2012-06-06T17:17:05Z | - |
dc.date.issued | 2008 | - |
dc.identifier.issn | 0021-9673 | - |
dc.identifier.uri | http://www.repositorio.ufba.br/ri/handle/ri/6084 | - |
dc.description | Acesso restrito: Texto completo. p. 99-104. | pt_BR |
dc.description.abstract | A method based on solid-phase microextraction (SPME) and gas chromatography with flame ionization detection (GC-FID) has been optimized for the determination of benzene, toluene, ethylbenzene and xylenes (BTEX) in water released from a waste treatment plant. The extraction step was optimized using fractional factorial and centralcomposite designs including the following experimental factors: saline concentration; extraction time; desorption time; agitation velocity; headspace volume. A multiple function was used to describe the experimental conditions for simultaneous extraction of the compounds. The procedure, based on direct SPME at 50 ◦C, using a polydimethylsiloxane fiber, showed good linearity (r > 0.997 over a concentration range 2–200 gL−1) and repeatability (relative standard deviation (RSD) < 4.23%) for all compounds, with limits of detection ranging from 0.05 to 0.28 gL−1, and limits of quantification ranging from 0.14 to 0.84 gL−1. Concentrations of the target compounds in these sampleswere between 145.8 and 1891 gL−1. | pt_BR |
dc.language.iso | en | pt_BR |
dc.source | http://dx.doi.org/10.1016/j.chroma.2008.06.022 | pt_BR |
dc.subject | Factorial design | pt_BR |
dc.subject | Central composite design | pt_BR |
dc.subject | Solid-phase microextraction | pt_BR |
dc.subject | Effluent | pt_BR |
dc.subject | BTEX | pt_BR |
dc.subject | GC-FID | pt_BR |
dc.title | Multivariate optimization of a solid phase microextraction-headspace procedure for the determination of benzene, toluene, ethylbenzene and xylenes in effluent samples from a waste treatment plant | pt_BR |
dc.title.alternative | Journal of Chromatography A | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.identifier.number | v. 1203, n. 1 | pt_BR |
dc.embargo.liftdate | 10000-01-01 | - |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
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