Spectrophotometric Determination of Iron(II) and Cobalt(II) by Direct, Derivative, and Simultaneous Methods Using 2-Hydroxy-1-Naphthaldehyde-p-Hydroxybenzoichydrazone
Joint Authors
Reddy, V. Krishna
Devi, V. S. Anusuya
Source
International Journal of Analytical Chemistry
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-27
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Optimized and validated spectrophotometric methods have been proposed for the determination of iron and cobalt individually and simultaneously.
2-hydroxy-1-naphthaldehyde-p-hydroxybenzoichydrazone (HNAHBH) reacts with iron(II) and cobalt(II) to form reddish-brown and yellow-coloured [Fe(II)-HNAHBH] and [Co(II)-HNAHBH] complexes, respectively.
The maximum absorbance of these complexes was found at 405 nm and 425 nm, respectively.
For [Fe(II)-HNAHBH], Beer’s law is obeyed over the concentration range of 0.055–1.373 μg mL−1 with a detection limit of 0.095 μg mL−1 and molar absorptivity ɛ, 5.6 × 104 L mol−1 cm−1.
[Co(II)-HNAHBH] complex obeys Beer’s law in 0.118–3.534 μg mL−1 range with a detection limit of 0.04 μg mL−1 and molar absorptivity, ɛ of 2.3 × 104 L mol−1 cm−1.
Highly sensitive and selective first-, second- and third-order derivative methods are described for the determination of iron and cobalt.
A simultaneous second-order derivative spectrophotometric method is proposed for the determination of these metals.
All the proposed methods are successfully employed in the analysis of various biological, water, and alloy samples for the determination of iron and cobalt content.
American Psychological Association (APA)
Devi, V. S. Anusuya& Reddy, V. Krishna. 2012. Spectrophotometric Determination of Iron(II) and Cobalt(II) by Direct, Derivative, and Simultaneous Methods Using 2-Hydroxy-1-Naphthaldehyde-p-Hydroxybenzoichydrazone. International Journal of Analytical Chemistry،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-513338
Modern Language Association (MLA)
Devi, V. S. Anusuya& Reddy, V. Krishna. Spectrophotometric Determination of Iron(II) and Cobalt(II) by Direct, Derivative, and Simultaneous Methods Using 2-Hydroxy-1-Naphthaldehyde-p-Hydroxybenzoichydrazone. International Journal of Analytical Chemistry No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-513338
American Medical Association (AMA)
Devi, V. S. Anusuya& Reddy, V. Krishna. Spectrophotometric Determination of Iron(II) and Cobalt(II) by Direct, Derivative, and Simultaneous Methods Using 2-Hydroxy-1-Naphthaldehyde-p-Hydroxybenzoichydrazone. International Journal of Analytical Chemistry. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-513338
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513338