Potentials of 3, 31, 41, 5, 7-pentahydroxyflavylium of Hibiscus rosa-sinensis L. (Malvaceae) flowers as ligand in the quantitative determination of Pb, Cd and Cr
N. N. Ukwueze1, C. A. Nwadinigwe1, C. O. B. Okoye1 and F. B. C. Okoye2*
1Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria.
2Department of Pharmaceutical and Medicinal Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria.
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