Publicação: Determination of potassium ions in biodiesel using a nickel(II) hexacyanoferrate-modified electrode
Carregando...
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Tipo
Artigo
Direito de acesso
Acesso restrito
Resumo
in this work. nickel hexacyanoferrate-modified electrode was developed to determine potassium ions in biodiesel by potentiometry. The modified electrodes exhibit a linear response to potassium ions in the concentration range of 4.0 x 10(-5) to 1.0 x 10(-2) mol L-1, with a detection limit of 1.9 x 10(-5) mol L-1. and a near-Nernstian slope (53-55 mV per decade) at 25 degrees C. The method developed in this work was compared with flame photometry and the potassium concentration found in biodiesel showed that the modified electrode method gives results similar to those obtained by flame photometry. (C) 2007 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
biodiesel, modified electrodes, nickel(II) hexacyanoferrate, potassium ions
Idioma
Inglês
Como citar
Talanta. Amsterdam: Elsevier B.V., v. 74, n. 5, p. 1630-1634, 2008.