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The Extractive‐Spectrophotometric Determination of Iron(III) As a Mixed‐Ligand Complex with N ‐Hydroxy‐ N , N ′DI‐ p ‐Tolyl‐ p ‐Toluamidine and Thiocyanate
Author(s) -
Patel K. S.,
Deb K. K.,
Mishra R. K.
Publication year - 1979
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197900016
Subject(s) - chemistry , molar absorptivity , thiocyanate , hydrochloric acid , ligand (biochemistry) , metal ions in aqueous solution , ternary complex , benzene , absorption (acoustics) , inorganic chemistry , ion , nuclear chemistry , organic chemistry , biochemistry , physics , receptor , acoustics , optics , enzyme
The extractive‐photometric determination or iron(III) as a mixed‐ligand complex with N ‐hydroxy‐ N, N′ ‐di‐ p ‐tolyl‐ p ‐toluamidine (HDTTA) and thiocyanate is described. The orange‐red Waterinsoluble 1:1:2 (metal: HDTTA: SCN − ) ternary complex formed in 0.1–0.6 M hydrochloric acid solutions is quantitatively extractable into benzene. The wavelength of maximum absorption, molar absorptivity and sensitivity of the colour system are 460nm, 12000 l. mole −1 cm −1 and 0.0046 μg Fe/ cm 2 respectively. The influence or foreign ions on the determination of iron has been studied. This method has also been applied to determine the iron content of several alloys.