Naslov
Kinetic-Potentiometric Determination of Fe(III) Using Fluoride Ion-selective Electrode

Autori
Radić, Njegomir ; Komljenović, Josipa

Izvornik
Croatica Chemica Acta (0011-1643) 64 (1991), 4; 679-687

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
kinetic-potentiometric; determination; iron(III); acid solution; fluoride ion-selective electrode

Sažetak
A kinetic-potentiometric method is described for the determination of Fe(III), based on monitoring of the formation of FeF 2+ in acid solution, using a fluoride ion-selective electrode. The influence of pH and fluoride concentration in cell solution on the kinetics of iron - fluoride reaction was studied. The initial rate of the complex formation reaction, or change in potential during fixed time interval (1 minute), was used to construct calibration graphs. There is a linear relationship between the calculated initial rate or ( E)1min and the concentration of iron in the cell solution. Good linearity (r = 0.9979) was achieved in the range of iron concentration from 3.5 x 10-5 M to 1.4 x 10-3 M

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA