Ligand

E%

Cd²⁺ R%

E%

Zn²⁺ R%

E%

Pb²⁺ R%

1

2

3

4

75.23

66.06

83.16

88.11

79.43

72.90

84.95

89.14

94.25

53.02

70.49

73.94

95.56

79.29

86.74

88.01

84.68

98.02

98.01

86.24

94.32

99.19

99.25

94.79