Complexation kinetics of 5-octyloxymethyl-8-quinolinol (Hocqn) with Ni(II) at the heptane-water interface was studied by measuring the dynamic interfacial tension. Decrease in the interfacial tension was caused by the adsorption of 1:1 complex formed at the interface. It was found that the complexation rate at the interface was 43 times faster than that in the bulk, and that the rate also depended on the counter-anion in the aqueous phase.
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Shioya et al. (1996) studied this question.
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