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Table 2 The Komar method for Cu:L relative to L for acetate buffer

From: Determination of Cu (II) ions using sodium salt of 4-phenylsemicarbazone 1,2-naphthoquinone-4-sulfonic acid in natural and industrial environments

V Cu, mL C Cu × 10−5, mol/L V L , mL C L  × 10−5, mol/L Absorbance A ε (L mol−1cm−1) × 105
1.0 0.68 2 1.6 0.068 0.11
1.5 1.02 3 2.4 0.115 0.12
2.0 1.36 4 3.2 0.179 0.13
  1. Molar attenuation coefficient ε = 29170; logarithm of the complex stability constants logβ = 4.53