Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2004 |
| Outros Autores: | , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://repositorio.ufba.br/ri/handle/ri/14035 |
Resumo: | Texto completo: acesso restrito. p. 293–300 |
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Quintella, Cristina Maria Assis Lopes Tavares da Mata HermidaWatanabe, Yuji NascimentoLima, Angelo Marcos VieiraKorn, MauroPepe, Iuri MunizEmbiruçu, MarceloMusse, Ana Paula SantanaQuintella, Cristina Maria Assis Lopes Tavares da Mata HermidaWatanabe, Yuji NascimentoLima, Angelo Marcos VieiraKorn, MauroPepe, Iuri MunizEmbiruçu, MarceloMusse, Ana Paula Santana2013-12-03T11:32:08Z20040003-2670http://repositorio.ufba.br/ri/handle/ri/14035v. 523, n. 2Texto completo: acesso restrito. p. 293–300A fully mechanized set-up was built for the experimental determination of bi-dimensional dispersion with high spatial resolution (2400 μm2). Gravitational and wall effects in a single stream were evaluated by using time-based sampling and a micro-flow cell. Vertical upward and downward flows as well as horizontal flows were investigated. Ethylene glycol (MEG) and Rhodamine B in MEG were used as carrier and sample solutions, respectively. Longitudinal profiles were obtained by laser induced total fluorescence (LIF) at up to 19 transversal sites and combined to generate high-resolution bi-dimensional profiles. A two frontal maxima pattern was observed for all flows. The volumetric fraction of RB shape was highly stretched for downward flow and there was high asymmetry for horizontal flow. The sensitivity of three dispersion parameters was evaluated: maximum peak value, peak half-width at half-height, and peak area. Data modeling showed that the tanks-in-series was more sensitive to wall effects, had good adjustment with only one tank for upward and horizontal flow and needed two tanks for downward flow which was attributed to the latter having higher dispersion. A black box empirical modeling described better the gravitational effect and allowed to identify a parameter sensitive to upward and downward flow as well as hinting to two inner streams within the horizontal flow. It also pointed to a wall dispersion contribution of twice that of the liquid–liquid dispersion.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2013-12-03T11:32:08Z No. of bitstreams: 1 Cristina M. Quintella.pdf: 263933 bytes, checksum: 641798a44a72a4095dc78fc3fdc95998 (MD5)Made available in DSpace on 2013-12-03T11:32:08Z (GMT). No. of bitstreams: 1 Cristina M. Quintella.pdf: 263933 bytes, checksum: 641798a44a72a4095dc78fc3fdc95998 (MD5) Previous issue date: 2004http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.aca.2004.07.009reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAFlow injection analysisDispersionMicrofluidicsSolid–liquid interfacial tensionLaser induced fluorescenceEvaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioningAnalytica Chimica Actainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALCristina M. Quintella.pdfCristina M. 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| dc.title.pt_BR.fl_str_mv |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning |
| dc.title.alternative.pt_BR.fl_str_mv |
Analytica Chimica Acta |
| title |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning |
| spellingShingle |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Flow injection analysis Dispersion Microfluidics Solid–liquid interfacial tension Laser induced fluorescence |
| title_short |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning |
| title_full |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning |
| title_fullStr |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning |
| title_full_unstemmed |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning |
| title_sort |
Evaluation of transversal and longitudinal dispersion in a flow injection system by exploiting laser induced fluorescence: influence of flow-cell positioning |
| author |
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida |
| author_facet |
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Watanabe, Yuji Nascimento Lima, Angelo Marcos Vieira Korn, Mauro Pepe, Iuri Muniz Embiruçu, Marcelo Musse, Ana Paula Santana |
| author_role |
author |
| author2 |
Watanabe, Yuji Nascimento Lima, Angelo Marcos Vieira Korn, Mauro Pepe, Iuri Muniz Embiruçu, Marcelo Musse, Ana Paula Santana |
| author2_role |
author author author author author author |
| dc.contributor.author.fl_str_mv |
Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Watanabe, Yuji Nascimento Lima, Angelo Marcos Vieira Korn, Mauro Pepe, Iuri Muniz Embiruçu, Marcelo Musse, Ana Paula Santana Quintella, Cristina Maria Assis Lopes Tavares da Mata Hermida Watanabe, Yuji Nascimento Lima, Angelo Marcos Vieira Korn, Mauro Pepe, Iuri Muniz Embiruçu, Marcelo Musse, Ana Paula Santana |
| dc.subject.por.fl_str_mv |
Flow injection analysis Dispersion Microfluidics Solid–liquid interfacial tension Laser induced fluorescence |
| topic |
Flow injection analysis Dispersion Microfluidics Solid–liquid interfacial tension Laser induced fluorescence |
| description |
Texto completo: acesso restrito. p. 293–300 |
| publishDate |
2004 |
| dc.date.issued.fl_str_mv |
2004 |
| dc.date.accessioned.fl_str_mv |
2013-12-03T11:32:08Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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publishedVersion |
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http://repositorio.ufba.br/ri/handle/ri/14035 |
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0003-2670 |
| dc.identifier.number.pt_BR.fl_str_mv |
v. 523, n. 2 |
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0003-2670 v. 523, n. 2 |
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http://repositorio.ufba.br/ri/handle/ri/14035 |
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eng |
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http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.aca.2004.07.009 |
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reponame:Repositório Institucional da UFBA instname:Universidade Federal da Bahia (UFBA) instacron:UFBA |
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