An-Najah National University

Nidal Zatar


  • Bookmark and Share Email
  • Sunday, April 5, 1992
  • Spectrophotemetric determination of cobalt in aqueous solution using di-2-pyridyl ketone derivatives
  • Published at:Not Found
  • A method for the spectrophotometric determination of cobalt(II) is presented, with a comparison of the binary complexes formed by cobalt(II) with di-2-pyridyl ketone nicotinoylhydrazone (DPKNH), di-2-pyridyl ketone 2-thiophenoylhydrazone (DPKTH) and di-2-pyridyl ketone benzoylhydrazone (DPKBH) in 50% (v/v) ethanolic solution. Cobalt(II) forms 1:2 complexes with the three reagents. Maximum absorbance is at 372 nm for Co(II)-DPKNH, at 389 nm for Co(II)-DPKTH and at 370 nm for Co(II)-DPKBH. Ranges of linearity, effects of pH and excess reagent, sensitivity, stability of the complexes and tolerance limits of ions are reported. It was concluded that the system with DPKTH is the best, followed by DPKNH and then DPKBH. The method was applied to the determination of cobalt in different alloys.


    Analytica Chimica Acta, Volume 259, Issue 1, 5 April 1992, Pages 175-179

  • Bookmark and Share Email
Leave a Comment


  • No Attachments Found for this Article


Nidal Abdul-Jabbar Mohammd Zatar
Analytical Chemistry
Show Full ProfileEnglish CV Arabic CV


Please do not email me if you do not know me
Please do not e-mail me if you do not know me