Also known as oxine or 8-Quinolinol

Chemical formula: C9H7NO

A chelating agent, often used for preconcentration of metal ions from solution. The ligand binds the free metal ions and can then be extracted into a smaller volume of an organic solvent, thus increasing the concentration of the metal ion.

Elements extracted by this ligand are:

Ag, Al, Am, Ba, Be, Bi , Bk, Ca, Cd, Ce, Cf, Cm, Co, Cr, Cu, Er, Fe, Ga, Hf, Hg, In, La, Mg, Mn, Mo, Nb, Nd, Ni, Np, Pa, Pb, Pd, Pu, Sb, Sc, Sm, Sn, Sr, Th, Ti, Tl, U, V, W, Y, Zn, Zr.

list of elements extracted taken from "Enrichment Techniques for Inorganic Trace Analysis", A. Mizuike, 1983

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