Figure 2.

Plot of k_obs (s⁻¹) versus [H₂O₂]_tot in aerobic phosphate buffer (118 mM) at pH 7.4 and 36.8°C. k_obs values (k_obs = R_I/[A]_i) were derived using the initial rate method by following the disappearance of the MLCT absorbance at 408 nm. Various initial concentrations [A]_i were between 34 and 147 µM. Each point represents an independent experiment. The slope of this plot is 4.7 × 10⁻² M⁻¹ s⁻¹.