Spectrophotometric determination of glycolic acid with chromotropic acid assisted by microwave oven

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorGigante, A. C.-
Autor(es): dc.creatorPezza, L.-
Autor(es): dc.creatorPezza, H. R.-
Data de aceite: dc.date.accessioned2022-02-22T00:06:45Z-
Data de disponibilização: dc.date.available2022-02-22T00:06:45Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2002-01-01-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/195730-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/195730-
Descrição: dc.descriptionIn this work, a rapid, simple and selective spectrophotometric for the determination of glycolic acid is proposed, This method is based on selective reaction between the formaldehyde splitted off by the glycolic acid, which reacts with chromotropic acid in a phosphoric acid medium, producing a violet-red compound (lambda(max) = 570 nm). The colored compound formation was accelerated by irradiating the reacting mixture with microwave energy for 30 seconds (1.100 W). Beer's Law is obeyed in a concentration range of 0-2,208 mg L-1. The proposed method was applied in the analysis of comercial samples of glycolic acid. Recoveries were within 97% to 101.4%, with standard deviations ranging from 0.2% to 0.4%.-
Descrição: dc.descriptionUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil-
Descrição: dc.descriptionUNESP, Inst Quim, Dept Quim Organ, BR-14800900 Araraquara, SP, Brazil-
Descrição: dc.descriptionUNESP, Inst Quim, Dept Quim Analit, BR-14800900 Araraquara, SP, Brazil-
Descrição: dc.descriptionUNESP, Inst Quim, Dept Quim Organ, BR-14800900 Araraquara, SP, Brazil-
Formato: dc.format223-230-
Idioma: dc.languagees-
Publicador: dc.publisherEditora Unesp-
Relação: dc.relationEcletica Quimica-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectglycolic acid-
Palavras-chave: dc.subjectchromotropic acid-
Palavras-chave: dc.subjectspectrophotometry-
Palavras-chave: dc.subjectirradiation by microwave-
Título: dc.titleSpectrophotometric determination of glycolic acid with chromotropic acid assisted by microwave oven-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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