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Pokpas, K.; Jahed, N.; Bezuidenhout, P.; Smith, S.; Land, K.; Iwuoha, E. Nickel Contamination Analysis at Cost-Effective Silver Printed Paper-Based Electrodes Based on Carbon Black Dimethylglyoxime Ink As Electrode Modifier: Original Scientific Paper. J. Electrochem. Sci. Eng. 2022, 12, 153-164.