Modification of Glassy Carbon Electrodes on Starch-Based for Detection of Chromium Hexavalent

The purpose of this study was to the effect percentage addition conductivity material in phosphorylation starch modify GCE (glassy carbon electrode) for detection Cr(VI). In study, technique used is DPV (Differential Pulse Voltammetry). activated and Fe3O4 nanoparticles. method an optimization determination performance obtained sensor. optimum materials, both nanoparticles, matrix 5%. form amorphous structure trigonal nanoparticles affects current conductive increases Cr(VI) shifts peak potential left. PSC1 sensor a limit 5,09 ppm sensitivity 0,2098 ppm/µA linear concentration range 2,6 – 15,6 ppm. However, PSN1 3,48 0,2120 18,2