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Spectrophotometric Determination of Cadmium(II) using ‎‎2-(5-bromo-2-pyridylazo)-5-diethylaminophenol

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Thu, 2014-03-20 10:26 — Bassem Shraydeh
Journal Title, Volume, Page: 
Microchemical Journal Volume 34, Issue 3, Pages 251–253
Year of Publication: 
1986
Link: 
http://www.sciencedirect.com/science/article/pii/0026265X86901165
Authors: 
B. Shraydeh
Chemistry Department, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Chemistry, An-Najah National University, Nablus, Palestine
[email protected]
R. Salim
Chemistry Department, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 

The complex of cadmium with the reagent 2-(-5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) has been studied. The composition, stability constant, and free energy change of formation of the complex have been determined. A sensitive spectrophotometric method for the determination of cadmium has been developed and applied for a range of concentration of 0.4–4.0 μg/ml cadmium using the complex Cd-5-Br-PADAP. The optimum conditions for maximum sensitivity of determination such as standing time, pH, wavelength, and order of addition have been determined. The effect of foreign ions on this method has been also studied.