Colorimetric determination of atmospheric nitrogen dioxide using preconcentration on C-18 cartridge.

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorUgucione, C.-
Autor(es): dc.creatorNeto, J. D.-
Autor(es): dc.creatorCardoso, A. A.-
Data de aceite: dc.date.accessioned2022-02-22T00:06:42Z-
Data de disponibilização: dc.date.available2022-02-22T00:06:42Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2002-05-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/195717-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/195717-
Descrição: dc.descriptionCOLORIMETRIC DETERMINATION OF ATMOSPHERIC NITROGEN DIOXIDE USING PRECONCENTRATION ON C-18 CARTRIDGE, An alternative analytical method for nitrogen dioxide (NO,) in atmosphere was developed. The collection of NO, is performed by a Sep-Pack C-18 cartridge impregnated with 11 % (v/v) of triethanolaminc plus 3,6 % (v/v) of ethylene glycol plus 25 % (v/v) of acetone combined solution. When the impregnating is used, NO2 is collected with good repeatibility (CV 3,3 %). The NO, absorbed in the sampler was stripped from the sorbent with a methanol 5% (v/v) aqueous solution and was determined by colorimetry as nitrite by using the Griess-Saltzman reagent. The detection limit of 1,4 ppb for 60 min sampling at 0,5 L min(-1) flow rate was obtained. Preparation and conditioning procedures for TEA-C-18 cartridge, sampling flow rate, absorption capacity and interference of other species are discussed.-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil-
Formato: dc.format353-357-
Idioma: dc.languagept_BR-
Publicador: dc.publisherSoc Brasileira Quimica-
Relação: dc.relationQuimica Nova-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectnitrogen dioxide-
Palavras-chave: dc.subjecttriethanolamine-
Palavras-chave: dc.subjectGriess Saltzman reagent-
Título: dc.titleColorimetric determination of atmospheric nitrogen dioxide using preconcentration on C-18 cartridge.-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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