Electrochemical sensing of ammonium ion at the water/1,6-dichlorohexane interface

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Jose A Ribeiro (Author) Other; Silva, F (Author) FCUP; Carlos M Pereira (Author) FCUP

Journal

Title: Talanta

Vol. 88

Pages: 54-60

ISSN: 0039-9140

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 27 Citations

Scopus - 30 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-002-DWE

DOI: 10.1016/j.talanta.2011.09.054

Abstract (EN): In this work, ion transfer and facilitated ion transfer of ammonium ion by a lipophilic cyclodextrin is investigated at the water/1,6-dichlorohexane micro-interface, using electrochemical approaches (cyclic voltammetry, differential pulse voltammetry and square wave voltammetry). The association constant has been obtained for the complex between ammonium ion and the cyclodextrin. Experimental conditions for the analytical determination of ammonium ion were established and a detection limit of 0.12 mu M was obtained. The amperometric sensor gave a current response proportional to the ammonium ion concentration in the range from 4.2 to 66 mu M.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7