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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/36432
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dc.contributor.authorMilani, M. R.-
dc.contributor.authorNeto, JAC-
dc.contributor.authorCardoso, Arnaldo Alves-
dc.date.accessioned2014-05-20T15:26:14Z-
dc.date.accessioned2016-10-25T18:00:48Z-
dc.date.available2014-05-20T15:26:14Z-
dc.date.available2016-10-25T18:00:48Z-
dc.date.issued1999-06-01-
dc.identifierhttp://dx.doi.org/10.1006/mchj.1999.1729-
dc.identifier.citationMicrochemical Journal. San Diego: Academic Press Inc., v. 62, n. 2, p. 273-281, 1999.-
dc.identifier.issn0026-265X-
dc.identifier.urihttp://hdl.handle.net/11449/36432-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/36432-
dc.description.abstractThe measurement of sulfur dioxide in air at the parts-per-billion level is described. The experimental arrangement consists of two optical fibers placed on opposite sides of a liquid droplet of malachite green solution. After light has been passed through the droplet, the transmitted light is measured by a referenced photodetection arrangement. The light used in this absorption process is from a monochromatic source (lambda(max) 625 nm). This arrangement permits the variation of color in the droplet to be measured. The sulfur dioxide in the sample is collected by the droplet; it reacts with malachite green resulting in a colorless dye. The decoloration of the solution is proportional to the concentration of sulfur dioxide sampled. The signal depends on the sample flow rate. The present technique is simple, inexpensive, and permits a fast and near real time measurement while consuming very little reagent, (C) 1999 Academic Press.en
dc.format.extent273-281-
dc.language.isoeng-
dc.publisherAcademic Press Inc.-
dc.sourceWeb of Science-
dc.subjectsulfur dioxidept
dc.subjectdroplet sensorpt
dc.subjectcolorimetrypt
dc.subjectair analysispt
dc.titleColorimetric determination of sulfur dioxide in air using a droplet collector of malachite green solutionen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUNESP, Inst Quim Araraquara, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil-
dc.description.affiliationUnespUNESP, Inst Quim Araraquara, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil-
dc.identifier.doi10.1006/mchj.1999.1729-
dc.identifier.wosWOS:000080621800008-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofMicrochemical Journal-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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