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

• Type: Article in International Scientific Journal
• Date: 1993

Authors

FERREIRA, IMPLVO (Author) FFUP; LIMA, JLFC (Author) FFUP; ROCHA, LSM (Author) Other

Journal

Title: Fresenius' Journal of Analytical Chemistry

Vol. 347

ISSN: 0937-0633

Publisher: Springer

Indexing

ISI Web of Knowledge - 28 Citations

Scopus - 32 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific