Fig. 6From: Thiosemicarbazide derivative-functionalized carbon nanotube for simultaneous determination of isoprenaline and piroxicamDPVs of DBT–CNT/GCE in 0.1 M buffer solution (pH = 7.0) containing different concentrations of IP (inner to outer corresponds to 50.0, 100.0, 200.0, 300.0, 400.0, 500.0, 600.0, 700.0, 800.0, 1000.0, 1200.0, and 1300.0 μM). Inset: calibration plot of IPBack to article page