CONSTRUCTION AND EVALUATION OF TUBULAR POTENTIOMETRIC DETECTORS SENSITIVE TO CHLORIDE, BROMIDE, AND IODIDE AND BASED ON HOMOGENEOUS CRYSTALLINE MEMBRANES

• Tipo: Artigo em Revista Científica Internacional
• Data: 1993

Autores

FERREIRA, IMPLVO (Autor) FFUP; LIMA, JLFC (Autor) FFUP; ROCHA, LSM (Autor) Outra

Revista

Título: Fresenius' Journal of Analytical Chemistry

Vol. 347

ISSN: 0937-0633

Editora: Springer

Indexação

ISI Web of Knowledge - 28 Citações

Scopus - 32 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-MG7

Abstract (EN): The construction of tubular potentiometric detectors is described, without an inner reference solution, sensitive to chloride, bromide, and iodide. They are based on homogeneous crystalline membranes obtained by high-pressure pressing of AgX/Ag2S powdered mixtures (X = Cl, Br and 1). The respective operating characteristics are evaluated by comparison with conventionally-shaped electrodes with the same sensor. In general, the detectors showed similar operating characteristics as those of the corresponding conventional electrodes, namely the concentration range, in which they presented a Nernstian response, an excellent reproducibility, and an extremely rapid response rate which in some cases enabled the FIA manifolds to attain sampling rates of 360 samples/h.

Idioma: Inglês

Tipo (Avaliação Docente): Científica