FLOW-THROUGH TUBULAR IODIDE AND BROMIDE SELECTIVE ELECTRODES BASED ON EPOXY-RESIN HETEROGENEOUS MEMBRANES

• Type: Article in International Scientific Journal
• Date: 1989

Authors

alegret, s (Author) Other; florido, a (Author) Other; lima, jlfc (Author) FFUP; machado, aasc (Author) Other

Journal

Title: Talanta

Vol. 36

Pages: 825-829

ISSN: 0039-9140

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 20 Citations

Scopus - 21 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-001-SHF

DOI: 10.1016/0039-9140(89)80162-6

Abstract (EN): Tubular all-solid-state iodide and bromide selective electrodes with channels drilled through the crystalline heterogeneous membranes have been prepared for use in flow-injection analysis (FIA). The membranes, made with AgX/Ag2S powdered mixtures (X = I, Br) dispersed in a non-conductive epoxy resin, were assembled inside a hollow cylindrical support of conductive epoxy resin. The response characteristics of these detectors, in a low-dispersion FIA system, have been evaluated. Both show a Nernstian response over the range between 5 × 10-5 and O.1M X-, good reproducibility and fast response, which allows a sampling rate of 60/hr. Operational pH ranges from 2.5 to 11 and from 3 to 10 were obtained for the iodide and bromide electrodes respectively. Iodide must be absent in determinations with the bromide electrode. © 1989.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5