Spectrophotometric determination of cerium(IV) using potassium ferrocyanide as an analytical reagent

摘要

Potassium ferrocyanide is used in the determination of cerium(IV) spectrophotometrically.It forms a greenish yellow complex in dilute acetic acid solution with lambda_(max) at 425 nm.The method is free from interference of a large number of metal ions.Molar absorptivity and Sandell's sensitivity of the formed complex are 6.0 X 10~3 L mol~(-1) cm~(-1) and 0.023 mu g cm~(-2),respectively.