MICRO-HOLE INTERFACE FOR THE AMPEROMETRIC DETERMINATION OF IONIC SPECIES IN AQUEOUS-SOLUTIONS

• Type: Article in International Scientific Journal
• Date: 1994

Authors

OSBORNE, MC (Author) Other; SHAO, Y (Author) Other; PEREIRA, CM (Author) FCUP; GIRAULT, HH (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: JOURNAL OF ELECTROANALYTICAL CHEMISTRY

Vol. 364

Pages: 155-161

ISSN: 0022-0728

Indexing

ISI Web of Knowledge - 109 Citations

Scopus - 109 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-001-KFG

DOI: 10.1016/0022-0728(93)02941-a

Abstract (EN): Ion transfer reactions at single microhole interfaces were studied using only pure water as the aqueous phase electrolyte resulting in a significantly increased potential window. The organic phase supporting electrolyte concentrations were reduced to micromolar levels and the results obtained were analysed using the general theoretical relationships derived by Oldham (J. Electroanal. Chem., 250 (1988) 1) for steady state voltammetry with little added electrolyte. The voltammetric response of the single microhole interface was investigated with regard to size and shape and as a result a novel amperometric sensing system for ammonium ions is proposed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7