Figure 4

Generation of H₂O₂ in DI water and 0.5 mM phosphate buffer during PGNO injection. Change in concentration of H₂O₂ in DI water and 0.5 mM potassium phosphate buffer (pH 6.0) during PGNO injection. PGNO was injected after O₂ purging by injecting N₂ gas for 0, 10, 30, and 60 min.