Complex Formation and Liquid-Liquid Extraction in the Niobium(V) – 2,4-Dihydroxythiophenol– Hydrophobic Amines System
The formation and solvent extraction of new ion-association com¬ple- ¬xes between anionic chelat of niobium(V) with 2,4-dihydroxy¬thio¬phenol (DHTP) and hydrophobic amines (HAs). The HAs were aniline (An), N-methyl¬aniline (MAn), N,N-dimethylaniline (DAn). The optimum conditions for the extract...
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| Format: | Article |
| Language: | English |
| Published: |
National Centre of Excellence in Analytical Chemsitry
2015-12-01
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| Series: | Pakistan Journal of Analytical & Environmental Chemistry |
| Subjects: | |
| Online Access: | http://www.ceacsu.edu.pk/PDF%20file/Voliume%2016%20Issue%201/19-27-OK-Recived%20Galley%20Proof%20PJAEC-29102015-29-31-12-2015.pdf |
| Summary: | The formation and solvent extraction of new ion-association com¬ple- ¬xes between anionic chelat of niobium(V) with 2,4-dihydroxy¬thio¬phenol (DHTP) and hydrophobic amines (HAs). The HAs were aniline (An), N-methyl¬aniline (MAn), N,N-dimethylaniline (DAn). The optimum conditions for the extraction of mixed ligand complexes (MLC) (organic solvent, extraction time, acidity of the aqueous phase, concentration of reagents), some key constants {association constant (β), extraction constant (Kex)} and analytical characteristics were determined. The molar absorptivities of MLC were calculated ε =(3.5-3.9) × 104 L mol–1 cm–1 . The Beer’s law was applicable in the range of 2.2-100 μg/mL. |
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| ISSN: | 1996-918X 2221-5255 |