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Journal of Analytical Science and Technology

Table 2 K'f and ligand concentration values obtained from the model system containing HIDA and NTA

From: Complexing capacity of electroplating rinsing baths—a twist to the resolution of two ligand families of similar strength

Ligand

Expected values

Experimental values

  

Ruzic and Scatchard linearizations

Non-linear curve fitting

HIDA

K'f = 1.38 × 106a

(4.49 ± 0.95) × 105

2.81 × 105

Lt = 2.99 μM

4.54 ± 0.32 μM

3.06 ± 0.21 μM

NTA

K'f = 6.24 × 107a

(3.31 ± 0.97) × 106

6.01 × 106

Lt = 0.89 μM

1.78 ± 0.12 μM

1.05 ± 0.31 μM

  1. Comparison of results obtained from the titration curve of solutions containing HIDA and NTA as model ligands, evaluated with linearization and non-linear fitting procedures. Cd(II) was used as titrant agent (it forms 1:1 complexes with both ligands)
  2. aCalculated from Martell and Smith (2010)
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