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Determination of gallium traces by differential pulse anodic stripping voltammetry

Bestimmung von Galliumspuren durch Differentialpuls-Anodic Stripping-Voltammetrie

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  • Element Determinators
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Summary

The determination of gallium traces is carried out on the hanging drop mercury electrode in solutions of low ionic strength and in absence of complexing agents. At pH=3.2, where stable solutions are obtained, concentrations of 0.2 μg Ga l−1 are determinated with a standard deviation of 0.96% and a detection limit of 4 ng Ga l−1.

The effect of various instrumental parameters is investigated and optimized conditions established. The theory of differential pulse anodic stripping voltammetry is verified with the results obtained experimentally. The use of salicylate as base electrolyte is also considered.

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Authors and Affiliations

  1. Institute of Analytical Chemistry, University of Florence, via Gino Capponi 9, I-50121, Florence, Italy

    Roberto Udisti & Giovanni Piccardi

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  1. Roberto Udisti
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  2. Giovanni Piccardi
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Udisti, R., Piccardi, G. Determination of gallium traces by differential pulse anodic stripping voltammetry. Z. Anal. Chem. 331, 35–38 (1988). https://doi.org/10.1007/BF00473892

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  • DOI: https://doi.org/10.1007/BF00473892

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