Chemical speciation studies on aurintricarboxylic acid complexes of AlIII, GaIII and InIII in solution phase A prerequisite for analytical determinations
| Main Authors: | K. avi KRumar, R. Srinivasu, G. Nageswara Rao, P. Shyamala |
|---|---|
| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2018
|
| Subjects: | |
| Online Access: |
https://zenodo.org/record/5638150 |
Daftar Isi:
- Department of Physical and Nuclear Chemistry and Chemical Oceanography, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India Department of Inorganic and Analytical Chemistry, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India E-mail : gollapallinr@yahoo.com Manuscript received 28 July 2017, revised 02 January 2018, accepted 18 January 2018 Abstract : Chemical speciation studies of the binary complexes of AlIII, GaIII and InIII with aurintricarboxylic acid (ATA) (a tetradentate ligand with five possible binding sites) have been carried out pH metrica lly in aqueous medium at constant ionic strength and temperature. Best fit chemical models representing the metal complexes with different compositions were obtained using MINIQUAD75 computer program. Mono nuclear species of the type MLH2 , MLH, ML and ML2 were found to exist in solution for all the three metals. The species distribution diagrams for three metals were generated using HYSS program. The results show that the type and percentage form of the complexes formed have a strong dependence on pH and the overall stability constants are greater for GaIII compared to AlIII and InIII .