title: Liquid-membrane electrode sensitive to ammonia and aliphatic amines based on 1-[(2-oxyphenyl)iminomethly]-2-oxybenzene-O,O',N-ammin-nickel(II) complex.
abstract: In this study, an ammonia-gas-sensing liquid-state membrane electrode based on 1-[(2-oxyphenyl)iminomethyl]-2-oxybenzene-O,O',N-ammin-nickel(II) (Ni(II)-Schiff base) as an ionophore was developed. This membrane electrode gave a very good performance and exhibited linear response with near-Nernstian slope of 50.7+/-0.5 mV per decade, within a concentration range of 1.0x10(-1)-1.0x10(-3) M. The electrode performance depends on the pH of the test solution and the optimum pH range was 10.0-11.5. The effect of concentration of internal solutions in the electrode was also investigated. The selectivity properties of the electrode towards aliphatic amines at a pH value of 10.2 were investigated with the mixed-solution method. Furthermore, the response time and lifetime of the electrode prepared were determined.
authors.affiliation: Department of Chemistry, Faculty of Science, Ankara University, Ankara, Turkey.
authors.forename: Ozlem
authors.initials: O
authors.lastname: Başgut
authors.forename: Zehra
authors.initials: Z
authors.lastname: Durmuş
authors.forename: Orhan
authors.initials: O
authors.lastname: Atakol
authors.forename: Esma
authors.initials: E
authors.lastname: Kılıç