Sample No.

K (at%)

P (at%)

ROS

18

0

5

${}^{\text{1}}{\text{O}}_{\text{2},}.{\text{O}}_2^{-}$ , ·OH

14

0

10

${}^{\text{1}}{\text{O}}_{\text{2},}.{\text{O}}_2^{-}$ , ·OH

35

0.75

2.25

${}^{\text{1}}{\text{O}}_{\text{2},}.{\text{O}}_2^{-}$

37

1.5

3

${}^{\text{1}}{\text{O}}_{\text{2},}.{\text{O}}_2^{-}$ , ·OH

38

1.5

4.5

${}^{\text{1}}{\text{O}}_{\text{2},}.{\text{O}}_2^{-}$

39

1.5

6

${}^{\text{1}}{\text{O}}_{\text{2},}.{\text{O}}_2^{-}$ , ·OH

41

3

9

${}^{\text{1}}{\text{O}}_{\text{2},}.{\text{O}}_2^{-}$