Spectrophotometric studies of ternary complexes of lead and bismuth with 0-phenanthroline and eosin

M. A. Rauf, M. Ikram, M. Ahmad

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The reaction of lead and bismuth as metal ions with o-phenenthroline as a primary ligand and eosin as a secondary ligand were examined spectrophotometricalty. An absorption band characterized the solution spectra of mixed ligand complexes formed, with λmax at 558 nm for lead and 552 nm for bismuth at pH 4.5 and 5.0 respectively. These association complexes obey the Beer's law over the concentration range of 1.93x10-6 to 9.6x10-6 mo1/1 (0.4-2.0 ppm) and 1.93x10-6 to 9.6x10-6 mol/1 (0.4-2.0 ppm) with molar absorption coefficient of 1.92x104 1 mol-1 cm-1 and 2.05x104 1 mol-1 cm-1 respectively. stability constants and diverse ion effect on these complexes were also investigated.

Original languageEnglish
Pages (from-to)183-189
Number of pages7
JournalDyes and Pigments
Volume52
Issue number3
DOIs
Publication statusPublished - Mar 2002
Externally publishedYes

Keywords

  • Bismuth (II)
  • Eosin spectrophotometry
  • Lead (II)
  • Mixed ligand complexes
  • O-phenanthroline

ASJC Scopus subject areas

  • General Chemical Engineering
  • Process Chemistry and Technology

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