A New and Simple Visual Technique Based on Indigo Dye for Determination of Ozone in Ambient Air

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.creatorGarcia, Gabriel [UNESP]
dc.creatorAllen, Andrew George [UNESP]
dc.creatorCardoso, Arnaldo Alves [UNESP]
dc.date2014-12-03T13:11:28Z
dc.date2014-12-03T13:11:28Z
dc.date2014-02-01
dc.date.accessioned2023-09-09T10:11:18Z
dc.date.available2023-09-09T10:11:18Z
dc.identifierhttp://dx.doi.org/10.1007/s11270-013-1836-2
dc.identifierWater Air And Soil Pollution. Dordrecht: Springer, v. 225, n. 2, 9 p., 2014.
dc.identifier0049-6979
dc.identifierhttp://hdl.handle.net/11449/113171
dc.identifier10.1007/s11270-013-1836-2
dc.identifierWOS:000331828400009
dc.identifier9165109840414837
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8762781
dc.descriptionEpisodes of pollution resulting from high concentrations of environmental ozone frequently occur in different parts of the world. The ozone can affect human health, natural vegetation, and agricultural productivity. The monitoring of ozone concentrations is essential to aid investigation of its effects and it is also required to assess progress in public management of this pollutant. A new effective and simple technique is presented for the determination of ambient ozone concentrations using a visual procedure. The method is based on the reaction between the dye indigo and ozone, with the formation of colorless products. The bleaching intensity is proportional to the amount of ozone. An indigo color standard scale was developed with the utilization of digital image-based (DIB) calibration and printed as a wheel-chart test kit. Ozone sampling is performed using a passive sampler containing a filter impregnated with indigo. The amount of reacted ozone can be determined by visual comparison using the wheel-chart test kit. The method enables determination of ozone concentrations from 2 to 97 ppb, with intervals of 3 ppb. It does not require an energy source or any post-sampling chemical treatment or analysis, and the ozone concentration can be known immediately, in situ, at the end of the sampling period. The method offers substantial advantages in large-scale mapping and monitoring of ozone or measurements concerning occupational exposure to ozone.
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionUniv Estadual Paulista UNESP, Inst Quim, Dept Quim Analit, BR-14800900 Sao Paulo, Brazil
dc.descriptionUniv Estadual Paulista UNESP, Inst Quim, Dept Quim Analit, BR-14800900 Sao Paulo, Brazil
dc.format9
dc.languageeng
dc.publisherSpringer
dc.relationWater, Air, and Soil Pollution
dc.relation1.769
dc.relation0,589
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectOzone
dc.subjectOzone determination
dc.subjectPassive sampling
dc.subjectIndigo blue
dc.subjectVisual method
dc.titleA New and Simple Visual Technique Based on Indigo Dye for Determination of Ozone in Ambient Air
dc.typeArtigo


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