Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/36660
metadata.artigo.dc.title: Voltammetric determination of organic nitrogen compounds in environmental samples using carbon paste electrode modified with activated carbon
metadata.artigo.dc.creator: Teixeira, Meryene de C.
Felix, Fabiana S.
Thomasi, Sérgio S.
Magriotis, Zuy M.
Silva, Josiane M. da
Okumura, Leonardo L.
Saczk, Adelir A.
metadata.artigo.dc.subject: Organic nitrogen compounds - Voltammetric determination
Pyridine
Quinoline
Square-wave voltammetry
Textile effluents
Compostos nitrogenados orgânicos - Determinação voltamétrica
Piridina
Quinolina
Voltametria de onda quadrada
Efluentes têxteis
metadata.artigo.dc.publisher: Elsevier
metadata.artigo.dc.date.issued: Jul-2019
metadata.artigo.dc.identifier.citation: TEIXEIRA, M. de C. et al. Voltammetric determination of organic nitrogen compounds in environmental samples using carbon paste electrode modified with activated carbon. Microchemical Journal, New York, v. 148, p. 66-72, July 2019.
metadata.artigo.dc.description.abstract: A quick and simple procedure is described to determine pyridine and quinoline using voltammetric methods and carbon paste electrodes modified with activated carbon in the proportion of 50:20:30 w/w graphite:activated carbon:silicon. Studies with cyclic voltammetry indicated that reduction of organic nitrogen molecules is irreversible in ammonium chloride solution acidified to pH 2.5 with Britton-Robinson buffer. Under the best optimum conditions for the differential pulse voltammetry for pyridine and square wave voltammetry for quinoline, the analytical curve was linear from 1.0 × 10−4 to 9.0 × 10−7 mol L−1 for both analytes with limits of detection of approximately 2.0 × 10−7 mol L−1 and limits of quantification of approximately 7.0 × 10−7 mol L−1. The proposed methods were successfully applied to determine pyridine and quinoline in samples of textile effluents and fuel with minimum sample treatment.
metadata.artigo.dc.identifier.uri: https://www.sciencedirect.com/science/article/pii/S0026265X18316394
http://repositorio.ufla.br/jspui/handle/1/36660
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos
DQI - Artigos publicados em periódicos

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