Article ID Journal Published Year Pages File Type
1238166 Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2008 8 Pages PDF
Abstract
The complexation reaction between some oximes including methyl-2-pyridylketone oxime (MPKO), phenyl-2-pyridylketone oxime (PPKO) and diacetyl monooxime (DMO) with some transition and heavy metal ions Co2+, Ni2+, Zn2+, Pb2+, Fe2+, Fe3+, Cr3+ and La3+ has been studied potentiometrically in aqueous solution at 25 ± 0.1 °C and ionic strength (μ) of 0.1 M supported by KCl. The overall stability constants log β's of respective species were obtained by computer refinement of pH-volume data using BEST program. The best model among the several proposed models was selected according to the lowest σfit value. The main species in binary systems are ML, ML2, MLH, MLH2, ML2H, ML2H2, MOHL, M(OH)2L, M(OH)L2 and M(OH)2L2 (L = MPKO or PPKO or DMO).
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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