Universitat de Barcelona
2019-09-06T06:26:19Z
2021-04-15T05:10:25Z
2019-04-15
2019-09-06T06:26:19Z
This work reports the development of a dimethylglyoxime (DMG) modified sensor in which the complexing agent was successfully immobilized by drop-casting onto a screen-printed carbon electrode support (SPCE). The experimental conditions for the preparation of the DMG-SPCE sensor were optimized by means of a D-optimal design, and the built sensors were analytically evaluated for the determination of Ni(II) by adsorptive stripping voltammetry (AdSV). Its analytical performance suggests its suitability for the determination of Ni(II)-ions by AdSV at concentration levels of μg L-1 (LOD of 2.3 μg L-1, linear range from 7.6 to 200 μg L-1). Finally, the applicability of the developed sensor was assessed by the determination of trace levels of Ni(II) by AdSV in a wastewater reference material with a very high reproducibility (0.005 %) and good trueness (0.1 %).
Article
Versió acceptada
Anglès
Níquel; Voltametria; Anàlisi electroquímica; Electroquímica; Nickel; Voltammetry; Electrochemical analysis; Electrochemistry
Elsevier B.V.
Versió postprint del document publicat a: https://doi.org/10.1016/j.jelechem.2019.03.025
Journal of Electroanalytical Chemistry, 2019, vol. 839, p. 83-89
https://doi.org/10.1016/j.jelechem.2019.03.025
cc-by-nc-nd (c) Elsevier B.V., 2019
http://creativecommons.org/licenses/by-nc-nd/3.0/es
