Fig. 3. Selectivity study: (a) I–V response of bare and NDNA-coated GCE; (b) I–V response with various analytes (showing affinity with Sb3+), concentration of each analyte was taken at 0.1 μM, 25 μL; (c) comparison of I–V response of bare and NDNA/nafion/GCE with and without the target analyte Sb3+ at 0.1 μM, 25 μL; (d) comparison of I–V response of nafion/GCE and NDNA/nafion/GCE with and without the target analyte.
