Colorimetric determination of ambient ozone using indigo blue droplet
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0103-50532006000200012 http://hdl.handle.net/11449/68836 |
Resumo: | A simple and sensitive method based on a liquid droplet is described for the measurement of atmospheric ozone. A 30 μL drop of indigo blue solution is suspended in a flowing-air sampling stream. The ozone collected reacts with the indigo solution resulting in its decolorization. The colorimetric sensor is composed of two optical fibers and the source of monochromatic light was a red LED (625 nm). The calibration curve was constructed with ozone standard concentrations ranging from 37 - 123 ppbv. The detection limit achieved was 7.3 ppbv. The method considered here showed itself to be easy to apply with a fast response and a total analysis time of only 5 minutes. |
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Colorimetric determination of ambient ozone using indigo blue dropletColorimetric sensorLiquid dropletOptical fibersOzoneA simple and sensitive method based on a liquid droplet is described for the measurement of atmospheric ozone. A 30 μL drop of indigo blue solution is suspended in a flowing-air sampling stream. The ozone collected reacts with the indigo solution resulting in its decolorization. The colorimetric sensor is composed of two optical fibers and the source of monochromatic light was a red LED (625 nm). The calibration curve was constructed with ozone standard concentrations ranging from 37 - 123 ppbv. The detection limit achieved was 7.3 ppbv. The method considered here showed itself to be easy to apply with a fast response and a total analysis time of only 5 minutes.Um método simples e sensível, baseado em uma gota líquida, é descrito para medida do ozônio atmosférico. Uma gota de 30 µL de solução de índigo azul é suspensa em uma corrente de ar para amostragem. O ozônio coletado reage com a solução de índigo azul, provocando seu descoramento. O sensor colorimétrico é composto por duas fibras ópticas; a fonte de luz monocromática usada foi um LED vermelho (625 nm). A curva analítica foi construída com concentrações padrão de ozônio, na faixa de 37 a 123 ppbv. O limite de detecção alcançado foi 7,3 ppbv. O método considerado mostrou-se de fácil aplicação e resposta rápida, com um tempo total de análise de apenas 5 minutos.Instituto de Química Universidade Estadual Paulista, CP 355, 14800-900 Araraquara-SPUniversidade Estadual Paulista (Unesp)Felix, Erika P. [UNESP]Cardoso, Arnaldo Alves [UNESP]2014-05-27T11:21:50Z2014-05-27T11:21:50Z2006-04-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article296-301application/pdfhttp://dx.doi.org/10.1590/S0103-50532006000200012Journal of the Brazilian Chemical Society, v. 17, n. 2, p. 296-301, 2006.0103-5053http://hdl.handle.net/11449/6883610.1590/S0103-50532006000200012S0103-50532006000200012WOS:0002367324000122-s2.0-336452946152-s2.0-33645294615.pdf9165109840414837Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Chemical Society1.4440,357info:eu-repo/semantics/openAccess2023-11-01T06:10:08Zoai:repositorio.unesp.br:11449/68836Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-01T06:10:08Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Colorimetric determination of ambient ozone using indigo blue droplet |
title |
Colorimetric determination of ambient ozone using indigo blue droplet |
spellingShingle |
Colorimetric determination of ambient ozone using indigo blue droplet Felix, Erika P. [UNESP] Colorimetric sensor Liquid droplet Optical fibers Ozone |
title_short |
Colorimetric determination of ambient ozone using indigo blue droplet |
title_full |
Colorimetric determination of ambient ozone using indigo blue droplet |
title_fullStr |
Colorimetric determination of ambient ozone using indigo blue droplet |
title_full_unstemmed |
Colorimetric determination of ambient ozone using indigo blue droplet |
title_sort |
Colorimetric determination of ambient ozone using indigo blue droplet |
author |
Felix, Erika P. [UNESP] |
author_facet |
Felix, Erika P. [UNESP] Cardoso, Arnaldo Alves [UNESP] |
author_role |
author |
author2 |
Cardoso, Arnaldo Alves [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Felix, Erika P. [UNESP] Cardoso, Arnaldo Alves [UNESP] |
dc.subject.por.fl_str_mv |
Colorimetric sensor Liquid droplet Optical fibers Ozone |
topic |
Colorimetric sensor Liquid droplet Optical fibers Ozone |
description |
A simple and sensitive method based on a liquid droplet is described for the measurement of atmospheric ozone. A 30 μL drop of indigo blue solution is suspended in a flowing-air sampling stream. The ozone collected reacts with the indigo solution resulting in its decolorization. The colorimetric sensor is composed of two optical fibers and the source of monochromatic light was a red LED (625 nm). The calibration curve was constructed with ozone standard concentrations ranging from 37 - 123 ppbv. The detection limit achieved was 7.3 ppbv. The method considered here showed itself to be easy to apply with a fast response and a total analysis time of only 5 minutes. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-04-03 2014-05-27T11:21:50Z 2014-05-27T11:21:50Z |
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://dx.doi.org/10.1590/S0103-50532006000200012 Journal of the Brazilian Chemical Society, v. 17, n. 2, p. 296-301, 2006. 0103-5053 http://hdl.handle.net/11449/68836 10.1590/S0103-50532006000200012 S0103-50532006000200012 WOS:000236732400012 2-s2.0-33645294615 2-s2.0-33645294615.pdf 9165109840414837 |
url |
http://dx.doi.org/10.1590/S0103-50532006000200012 http://hdl.handle.net/11449/68836 |
identifier_str_mv |
Journal of the Brazilian Chemical Society, v. 17, n. 2, p. 296-301, 2006. 0103-5053 10.1590/S0103-50532006000200012 S0103-50532006000200012 WOS:000236732400012 2-s2.0-33645294615 2-s2.0-33645294615.pdf 9165109840414837 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of the Brazilian Chemical Society 1.444 0,357 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
296-301 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1792961706601742336 |