Fig. 9

(A) DPV and (B) LSV repeatability and reproducibility results of CoNiWBO/rGO-GCE from successive seven readings of 50 µM sarcosine detection in 0.1 M PBS. The electrochemical response of CoNiWBO/rGO-GCE in the presence of equal concentrations (50 µM) of interfering species like uric acid, glucose, and creatinine in 0.1 M PBS via (C) DPV and (D) LSV.