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Journal Name:
J. Monatsh Chem.
Volume:
115
Issue:
1
Pages From:
57
To:
64
Date:
Sunday, January 1, 1984
Keywords:
Cerium determination, Spectrophotometry
Abstract:
A sensitive procedure for spectrophotometric determination of cerium(III) has been developed. AtpH 10.2 cerium reacts with 1-(2-pyridylazo)-2-naphthol in 40% ethanol to form a red complex which has an absorption maximum at 545 nm. The molar absorptivity at 545 is 3.95·10^3 mol−1. Maximum stability of the complex was attained in pure ethanol. The stoichiometries and structures of the chelates were studied applying conductometric titration, visible spectrophotometry and IR spectrophotometry. The IR spectra revealed that coordination takes place through the N=N, C-OH and pyridyl group.