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 language | English |
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Pages (from-to) | 183-189 |
Number of pages | 7 |
Journal | Dyes and Pigments |
Volume | 52 |
Issue number | 3 |
DOIs | |
Publication status | Published - Mar 2002 |
Externally published | Yes |
Keywords
- Bismuth (II)
- Eosin spectrophotometry
- Lead (II)
- Mixed ligand complexes
- O-phenanthroline
ASJC Scopus subject areas
- General Chemical Engineering
- Process Chemistry and Technology