Nickel contamination analysis at cost-effective silver printed paper-based electrodes based on carbon black dimethylglyoxime ink as electrode modifier

Electrochemical detection of metal cations at paper-based sensors has been suggested as an attractive alternative to current spectroscopic and chromatographic techniques due the ease fabrication, disposable nature, low cost. Herein, a novel carbon black (CB), dimethylglyoxime (DMG) ink is designed electrode modifier in conjunction with 3-electrode inkjet-printed paper substrates for use adsorptive stripping voltammetric electroanalysis nickel water samples. The developed method provides novel, low-cost, rapid, portable approach towards analysis absence commonly used toxic metallic films. study demonstrated builds on previous work field by limiting device sensitivity improved increasing active surface area, electron transfer kinetics, catalytic effects associated non-conductive films through CB nanoparticles first time confirmed electroanalysis. CB-DMG allows selective preconcentration analyte without Mercury or Bismuth Compared similarly reported sensors, limits (48 µg L-1), selectivity, intermetallic interferences were achieved. was applied samples well below World Health Organization (WHO) standards.