Janus Green Dye as a New Reagent for Catalytic Kinetic Determination of Zirconium in Ceramic Materials

A new catalytic kinetic spectrophotometric procedure for trace quantities determination of zirconium was proposed. Janus Green is oxidized by potassium bromate and zirconium catalyzed its reaction which becomes changed a colorless product in acidic media. Reaction rate was monitored spectrophotometrically at 606 nm. It relies on the linear relationship where the change in the absorbance (RAt) versus added Zr (IV) amounts in the range of 0.1–250 Tg mL−1 is plotted. Under the optimum conditions, the sensitivity of the proposed method, i.e. the limit of detection corresponding to 6 min is 0.08 Tg mL−1. The method is featured with good accuracy and reproducibility for zirconium (IV) determination in real samples. The method is simple, highly sensitive, selective and very stable.

کلیدواژه ها:

Janus green dye ، Kinetics ، Zirconium ، Ceramic