Spectrofluorometric Determination of the Stoichiometric and Formation Constant of 8-Hydroxyquinoline Complexes with Aluminium, Cadmium, Magnesium, and Zinc in Aqueous Solution
Department of Chemical Sciences, Faculty of Science and Technology University of Malaysia Terengganu 21030Kaula Terengganu Malaysia
Email:- hafiza@umt.edu.my
The fluorescence spectra of the metal-8-hydroxyquinoline (metal-HQ) complexes were obtained by measuring the fluorescence intensity emitted from the complexes produced by the reaction of metal ions with HQ reagent. The excitation wavelengths for all four Metal-HQ complexes occur at 370 nm. Meanwhile the emission wavelengths for Al-HQ, Cd-HQ, Mg-HQ and Zn-HQ complexes occur at 522 nm, 555 nm, 520 nm and 538 nm respectively. The stoichiometric and formation constant of the metal-HQ complexes were determined by means of Job’s method. The stoichiometry evaluated for metal-reagent complexes are 1:3 for Al-HQ and 1:2 for Cd-HQ, Mg-HQ and Zn-HQ respectively. Meanwhile the stability of the complexes are given by the order of Al3+ > Zn2+ > Cd2+ > Mg2+.
Copy the following to cite this article:
ZUKI H.M, "Spectrofluorometric Determination of the Stoichiometric and Formation Constant of 8-Hydroxyquinoline Complexes with Aluminium, Cadmium, Magnesium, and Zinc in Aqueous Solution", Journal of Ultra Chemistry, Volume 8, Issue 3, Page Number 377-385, 2016Copy the following to cite this URL:
ZUKI H.M, "Spectrofluorometric Determination of the Stoichiometric and Formation Constant of 8-Hydroxyquinoline Complexes with Aluminium, Cadmium, Magnesium, and Zinc in Aqueous Solution", Journal of Ultra Chemistry, Volume 8, Issue 3, Page Number 377-385, 2016Available from: http://journalofchemistry.org/paper/435/
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