Naslov
Kinetic-Potentiometric Determination of Aluminium in Acid Solution Using Fluoride Ion-selective Electrode

Autori
Radić, Njegomir ; Bralić, Marija

Izvornik
Analyst (0003-2654) 115 (1990); 737-739

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

Ključne riječi
aluminium determination ; kinetic - potentiometric method ; fluoride ion-selective electrode

Sažetak
A kinetic - potentiometric method is described for the determination of aluminium(lll) based on rhonitoring its reaction with hydrofluoric acid using a fluoride ion-selective electrode at pH 2. At that pH the reaction Al3+ + HF  AIF2+ + H+ is the predominant path for the initial consumption of aluminium in a complex with fluoride. The initial rate of the complex formation reaction was used to construct calibration graphs. There is a linear relationship between the initial rate of reaction and the amount of aluminium added. The method is rapid and can be used for the determination of aluminium down to 0.5  mol with satisfactory precision (relative standard deviation <6%).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA