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A) CVs, B) DPVs and C) SWVs in the potential range of -1 to +1 V and scan rate of 100 mV/s for Ag-citrate/GQDs nano-ink/leaf electrode in the absence and presence of 1mM trifluralin. Supporting electrolyte is 0.1M PBS (pH = 7.4) in the presence of acetone, D) Photographic image of electrochemical sensor made by direct writing of nano-ink on the surface of leaf.
