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Selective Spectrophotometric Determination of Palladium (II) With 2-(5-Bromo-2-Pyridylazo)-5-(Diethylamino)-Phenol

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Thu, 2014-03-20 10:43 — Bassem Shraydeh
Journal Title, Volume, Page: 
Analytical Letters Volume 19, Issue 1-2, Pages 99-112
Year of Publication: 
1986
Link: 
http://www.tandfonline.com/doi/abs/10.1080/00032718608066244#.Uyqt8vmSwgY
Authors: 
Bassem F. Shraydeha
Chemistry Department, Faculty of Science , An-Najah National University , Nablus, Palestine
Current Affiliation: 
Department of Chemistry, An-Najah National University, Nablus, Palestine
[email protected]
Jamal Shalabia
Chemistry Department, Faculty of Science , An-Najah National University , Nablus, Palestine
Ali Z. Abu Zuhria
Chemistry Department, Faculty of Science , An-Najah National University , Nablus, Palestine
Preferred Abstract (Original): 

A spectrophotometric study of the Pd(II) complex of a reagent 2-(5-Bromo-2-Pyridylazo)-5-(diethylamino)-Phenol (5-Br-PADAP) is presented. A violet complex is formed at pH 3.53, and shows maximal absorbance at 585 nm with molar absorptivity of 3.86 × 104 1. mol−1 cm−1. Beer's law is obeyed up to 50 μ of Pd(II). The method offers the advantages of simplicity, high precision, requires no extraction and is very selective, where 5.0 mg Pt(VI) and 0.3 mg Au(III) ions do not interfere.