Speciation Studies of Bifunctional 3-Hydroxy-4-Pyridinone Ligands in the Presence of Zn²⁺ at Different Ionic Strengths and Temperatures.

To investigate the effect of temperature on the speciation of the ligands in NaCl aqueous solution, UV-Vis spectrophotometric measurements were performed at I = 0.15 mol L −1 and T = 288.15 K, which together with the data already published in the literature at T = 298.15 K and 310.15 K [ 8 ] showed a trend for protonation constants with the considered variables.

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