Determination of Chromium in Natural Water by Adsorptive Stripping Voltammetry Using In Situ Bismuth Film Electrode.

ABSTRACT: Development of adsorptive stripping voltammetry (AdSV) combined with in situ prepared bismuth film electrode (in situ BiFE) on glassy carbon disk surface using diethylenetriamine pentaacetic acid (DTPA) as a complexing agent and NO₃ ^- as a catalyst to determine the trace amount of chromium (VI) is demonstrated. According to this method, in the preconcentration step at E _dep = -800 mV, the bismuth film is coated on the surface of glassy carbon electrodes simultaneously with the adsorption of complexes Cr(III)-DTPA. In addition to the influencing factors, the stripping voltammetry performance factors such as deposition potential, deposition time, equilibration time, cleaning potential, cleaning time, and technical parameters of differenti

SUBMITTER: Thi Hue N 

PROVIDER: S-EPMC7244981 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature