The dataset includes raw data of the electrochemical measurements presented in the paper. The file name corresponds to the number of graphs in the original paper.
The data include electrochemical measurements 3D goethite–spongin-modified ( 3DGS) carbon paste electrode (CPE) used for of simultaneous determination of dopamine (DA) and tryptophan (TRP).
Fig1A_3DGS includes raw data for Nyquist plots for 3DGS/CPE in a solution of 0.1 M KCl containing 5 mM [Fe(CN)6]3−/4−
Fig1A_CPE includes raw data for Nyquist plots for CPE in a solution of 0.1 M KCl containing 5 mM [Fe(CN)6]3−/4−
Fig1B includes raw data for cyclic voltammetry (CV) of CPE and 3DGS/CPE in a solution of 0.1 M KCl containing 5 mM [Fe(CN)6]3−/4−.
Fig2 includes raw data for cyclic voltammetry (CV) of CPE and 3DGS/CPE in 0.1 M phosphate buffer pH 6 in absence and presence of 80 μM DA and TRP
Fig3A includes raw data for differential pulse voltammetry (DPV) of 3DGS/CPE recorded in 0.1 M phosphate buffer (pH of 3–8) containing 30 μM DA and TRP at a scan rate of 0.1 V·s−1
Fig4A includes raw data for cyclic voltammetry (CV) of 3DGS/CPE in 0.1 M phosphate buffer pH 6 containing 100 μM DA and TRP at different scan rates (20–350 mV·s−1)
Fig5A includes raw data for differential pulse voltammetry (DPV) responses of 3DGS/CPE in 0.1 M phosphate buffer pH 6 at a scan rate of 0.1 V·s−1
Fig6A includes raw data for differential pulse voltammetry (DPV) responses of 3DGS/CPE in 0.1 M phosphate buffer pH 6 at a scan rate of 0.1 V·s−1 for simultaneous addition of different concentrations of DA (4–246 μM) and TRP (2–150 μM);
Fig7A includes raw data for differential pulse voltammetry (DPV) of 3DGS/CPE in 0.1 M phosphate buffer pH 6 containing 30 μM DA and TRP at a scan rate of 0.1 V·s−1 (recorded within 30 days)
Fig7B includes raw data for interference test of 30 μM DA and TRP with 100 fold of NaCl, KCl, glucose, alanine, and CaCl2
Fig7C includes raw data for interference test of 30 μM DA and TRP with 30 μM of ascorbic acid (AA), uric acid (UA), and melatonin (ML)
Fig8A includes raw data for differential pulse voltammetry (DPV) of 3DGS/CPE in 0.1 M phosphate buffer pH 6 containing human urine sample spiked100 μM dopamine (DA) and 50 μM tryptophan (TRP)
Fig8B includes raw data for differential pulse voltammetry (DPV) of 3DGS/CPE in 0.1 M phosphate buffer pH 6 containing human urine sample spiked 50 μM dopamine (DA) tryptophan (TRP)
Electrochemical analysis was conducted utilizing a PalmSens 4 electrochemical analyzer, operated by PSTrace 5.8 software (PalmSens BV, Houten, The Netherlands). The experimental details are described in the linked paper.
