Interaction of Calf Thymus DNA with the Ni(II) Complex of Sodium 1,4-Dihydroxy-9,10-Anthraquinone-2-Sulphonate: A Novel Method of Analysis Using Cyclic Voltammetry

Figure 3

Plot of cathodic peak current (𝐼_p) of 23.806×10⁻⁶ mol dm⁻³ Na₂[Ni(NaLH)₂Cl₂] · 2H₂O in presence of different total CT DNA concentrations, 𝐶_𝐷 (mol dm⁻³) = 0, 49.38×10⁻⁶; 98.30×10⁻⁶; 146.78×10⁻⁶; 194.78×10⁻⁶; 242.33×10⁻⁶; 336.13×10⁻⁶; 428.25×10⁻⁶; 518.65×10⁻⁶; 607.45×10⁻⁶; 694.67×10⁻⁶; 780.35×10⁻⁶; 906.07×10⁻⁶; 1028.58×10⁻⁶; 1147.57×10⁻⁶; 1264.35×10⁻⁶. [NaCl] = 0.500 mol dm⁻³, pH = 7.4, 25^∘C.