Premium
Spectrophotometric Determination of Iron (III) Using 3‐Hydroxy‐2‐Methyl‐1,4‐Naphthoquinone Monoxime (HMNQM)
Author(s) -
Kamini Miss,
Kamil F.,
Sindhwani S. K.
Publication year - 1982
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.198200035
Subject(s) - chemistry , molar absorptivity , naphthoquinone , absorption (acoustics) , nuclear chemistry , medicinal chemistry , organic chemistry , physics , acoustics , optics
Iron (III) forms brown coloured complex with 3‐hydroxy‐2‐methyl‐1,4‐naphthoquinone monoxime. The iron (III)‐HMNQM complex is found to be soluble in DMF and exhibits maximum absorption at 470 nm in the p H range 4.5–5.5. Beer's law is obeyed upto 5.58 ppm of iron (III) and sensitivity of the reaction is 0.0046 μg/ cm 2 , with molar absorptivity of 1.21×10 4 ℓ mole −1 cm −1 . The method has been used for the determination of iron (III) in alloys.