Study of cathodic stripping of copper in hydrochloric acid medium. Simultaneous determination of cadmium, lead and copper by combined anodic and cathodic stripping voltammetry

Nedeltcheva, T.; Costadinnova, L.; Athanassova, M.

doi:10.1016/0003-2670(94)85128-x

Cited by 5 publications

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“…Anodic stripping voltammetric determination of copper is not very sensitive due to the closeness of its anodic peak potential to that of mercury oxidation and the broadness of its anodic peak [42,43]. However, cathodic stripping voltammetry was successfully used for determination of copper complexed with different ligands [44][45][46][47][48][49][50][51][52][53][54][55][56]. In addition, anodic and adsorptive cathodic stripping voltammetric methods have been reported for determination of cadmium [43-45, 50, 56-65].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of trace aluminum (III), copper (II) and cadmium (II) in water samples by square-wave adsorptive cathodic stripping voltammetry in the presence of oxine

Beltagi

Ghoneim

2008

J Appl Electrochem

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A validated adsorptive cathodic stripping voltammetry method is described for simultaneous determination of Al(III), Cu(II) and Cd(II) in water samples. In acetate buffer (pH 5) containing 10 lM oxine, these metal ions were determined as oxine complexes following adsorptive accumulation onto the HMDE at -0.05 V versus Ag/AgCl/KCl s . The best signal to noise ratio was obtained using a square wave of scan increment 10 mV, frequency 120 Hz, and pulse-amplitude 25 mV. Limits of detection as low as 0.020 lg L -1 Al(III), 0.012 lg L -1 Cu(II) and 0.028 lg L -1

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