Figure 4: Calorimetric titrations for the complex formation of glutarimidedioxime with Mn(II) at 25 °C. | Scientific Reports

Figure 4: Calorimetric titrations for the complex formation of glutarimidedioxime with Mn(II) at 25 °C.

From: Complexation of Manganese with Glutarimidedioxime: Implication for Extraction Uranium from Seawater

Figure 4

I = 0.5 mol∙L−1 NaCl. (a) Thermogram (solid line, using bottom x-axis and left y-axis) and cumulative heat (blue circule symbols, using top x-axis and right y-axis). (b) Cumulative heat (right y axis, blue circule symbols - experimental Q, dashed line – fitted Q) and speciation of Mn(II) (left y axis, black: free Mn2+, red: MnHA+, pink: MnA22−, where H2A stands for the neutral glutarimidedioxime) vs. the titrant volume. Initial cup solutions: V = 750 μL,  = 1.001 μmol,  = 3.023 μmol,  = 6.046 μmol, Titrant: 15.89 mmol·L−1 NaOH, injection volume: 5.0 μL.

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