Construction and evaluation of a crystalline silver double-membrane tubular potentiometric detector for flow injection analysis. Application to chloride determination in wine

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Couto, CMCM (Autor) Outra; Lima, JLFC (Autor) FFUP; Montenegro, MCBSM (Autor) FFUP

Revista

Título: Analusis

Vol. 26

Páginas: 182-186

ISSN: 0365-4877

Editora: EDP Sciences

Indexação

ISI Web of Knowledge - 5 Citações

Scopus - 6 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-7YF

DOI: 10.1051/analusis:1998131

Abstract (EN): This paper describes the construction and assessment of the operating characteristics and analytical usefulness of a homogeneous crystalline silver double membrane tubular electrode with increased sensitivity. The constructed electrodes allowed Ag(I) determinations in the 3 10(-5) - 1 10(-1) M range with a calibration slope of 114 mV dec(-1) and with good reproducibility (0.6 mV). The development and application of a flow injection analysis system manifold for chloride determinations in wine samples, in a wide concentration range (10 - 800 mg L-1), with a titrant consumption of 90 mu g determination(-1) is also described. The results obtained from the analysis of 12 wine samples showed good agreement between the proposed method and the reference one, accomplishing 90 - 200 samples h(-1).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5