Figure 4
Fast kinetics were observed with NLB at higher mol ratios of 2.15 (■) and 1.07 L/H (▲). These reactions were complete within 10 min with yields of about 80% and conform to first-order kinetics. The rate constants were 1.9 ± 0.2 and 1.6 ± 0.1 min−1 respectively. Relatively slower kinetics were obtained at 0.54 L/H mol ratio (●), with k = 0.082 ± 0.006 min−1. Citric buffer (50 mM, pH 4.8), 37°C. Constant total Fe(III)PPIX concentration of 30 μM. Error bars represent SEM (n = 4).