Production of 1O2 by Photochemical, Chemical, and Biological Systems 1O2 RCOO RCOO • • + (1) (12) ENZYMES O2 + 3SENSITIZER (2) H2O2 + OCl - H2O2 + O2- (3) + (4) OH O2- (5) (7) (8) (9) (10) O2- O2- + O2- O2- + + Y+ H2O2 HO2- OZONIDES ENDOPEROXIDES SENSITIZER H2O ClOH- + OH OHe- Y 2H+ H2O2 RC O + RCOH PRODUCTS PRODUCTS H2O + OH- (11) + • •Production of 1O2 by Photochemical, Chemical, and Biological Systems 1O2 RCOO RCOO • • + (1) (12) ENZYMES O2 + 3SENSITIZER (2) H2O2 + OCl - H2O2 + O2- (3) + (4) OH O2- (5) (7) (8) (9) (10) O2- O2- + O2- O2- + + Y+ H2O2 HO2- OZONIDES ENDOPEROXIDES SENSITIZER H2O ClOH- + OH OHe- Y 2H+ H2O2 RC O + RCOH PRODUCTS PRODUCTS H2O + OH- (11) + • •