θ

Zuc + NaCl

θ

Zuc only

Cur

(mol/L)

Cur

(ppm)

0.610

0.640

0.543 × 10−4

20

0.647

0.703

1.086 × 10−4

40

0.762

0.814

1.629 × 10−4

60

0.812

0.873

2.172 × 10−4

80

0.901

0.944

2.715 × 10−4

100