Studies on the polarographic behaviors of alizarin complexone and the adsorptive complex wave of thulium-alizarin complexone

In the 0.1M acetate buffer solution, at pH 5.9, alizarin complexone exhibits a reversible adsorptive prewave. On the surface of DME, the adsorption of alizarin complexone obeys Frumkin adsorption isotherm. In the same buffer solution, when the thulium was added, a sensitive adsorptive complex wave of thulium-alizarin complexone has been obtained by single-sweep polarograph. The composition of the complex and the mechanism of electrode processes were studied in detail.