Fig. 2From: Reversible uptake of molecular oxygen by heteroligand Co(II)–l-α-amino acid–imidazole systems: equilibrium models at full mass balanceThe Co(II)–l-α-histidine–Himid system at molar ratio 0.3:0.75:0.3 (mmol). Dependence of pH and number of mmole O2 bound on duration of the oxygenation reaction at a temperature of ~0°C (vertical segment corresponds to reversibility of O2 uptake after saturation = 86.69%)Back to article page