Second derivative spectrophotometric determination of iron by extraction of the ferroin-perchlorate ion-association complex into mesityl oxide.
A highly selective and sensitive second-derivative spectrophotometric determination of iron is based on the extraction of the ferroin-perchlorate ion-association complex into mesityl oxide. A linear calibration graph is obtained for iron in the range 0.5-50 mug in 100 ml of original aqueous phase, with a detection limit of 2 ng/ml. The method is precise and reliable and has been applied to the determination of iron in high-purity rare-earth oxides.
Sukumar
R
R
Regional Research Laboratory (CSIR), Trivandrum 695 019, India.
Rao
T P
TP
Damodaran
A D
AD