Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Shukri Khalaf
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Mustafa Khamis
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original):
A method for the spectrophotometric determination
of cobalt (II) by complexation with di-2-pyridyl ketone benzoylhydrazone
(DPKBH) in 50% (v/v) ethanolic solution is described. Cobalt (II) forms
a 1:2 complex with DPKBH. The complex has maximum absorbance at 370 nm.
Beer's law is obeyed over the range 0.1 - 2.8 μg.ml-1. The effect of
pH, effect of excess reagent, stability of the complex and the tolerance
limit of many metal ions have been reported. The method is applied to
the determination of cobalt in different alloys containing other metals
ions.