REVIEWS IN ANALYTICAL CHEMISTRY, cilt.27, sa.2, ss.83-90, 2008 (SCI-Expanded)
In this study, a Fe(III)-selective solid state membrane electrode based on AgFeS2-FeS, (x=2-3) mixture was developed. This electrode exhibited a linear Nernstian response over the range 1 0,2_ 10,5 M of iron(III) with a slope of 18.7 0.8 mV per p[Fe]. The effects of the pH and the lifetime of the electrode were investigated. The selectivity coefficients for some common cations were calculated by the mixed-solution method. The preparation procedure of the electrode is easy and inexpensive. Moreover, the proposed electrode was applied for the determination of iron in standard reference materials.