C_i

R_L

Pb(II)

Cu(II)

0.5

0.839

0.992

1.0

0.723

0.984

2.5

0.510

0.961

5.0

0.342

0.926

10.0

0.207

0.862

50.0

0.050

0.556

100.0

0.025

0.385