Journal: Mikrochimica Acta
Article Title: Multi-material integrated 3D-printed electrochemical detection platform for rapid on-site screening of nimesulide in industrial sewage
doi: 10.1007/s00604-025-07634-8
Figure Lengend Snippet: a Photograph of a free-standing flow-through 3DPEC; b CV responses of 0.2 mM NIM using 3DP electrodes was performed at activated (red line) and non-activated (black line) electrodes, with scan rate of 100 mV/s. Nimesulide was dissolved in a diluted mixture of 1:10 (v/v) (0.01 M PBS, pH 7.01: sewage). The dashed lines represent the corresponding blank signals (0.01 M PBS, pH 7.01: sewage). The scan was performed from +0.5 to +1.3 V; +1.3 to +0.5 V; c corresponding variation in current intensities and peak potentials from CV measurements of three successive scans ( n = 3) on three activated and three non-activated electrodes in the presence of NIM; d DPV analysis with 3DPEC at different NIM concentrations (1.0 to 75.0 μM NIM) in industrial sewage. NIM was dissolved in a diluted mixture of 1:10 (v/v) (0.01 M PBS, pH 7.01 : sewage); e respective calibration curve. The error bars in Fig. 5e represent the standard deviation derived from measurements ( n =3) at the same concentration; f relative variation ( n =3) of each interfering species in the electrochemical response of NIM, using an interfering agent/NIM ratio of 1:1, at a concentration of 10.0 µM; g DPV measurements were carried out using the activated electrode for the analysis of a sewage water sample (black lines). The sample was initially spiked with 2.0 μM NIM (dark red line), followed by successive additions of 2.0 μM NIM (light red lines); h the corresponding calibration curve ( n =3) for NIM was constructed based on the standard additions. Nimesulide was dissolved in a diluted mixture of 1:10 (v/v) (0.01 M PBS, pH 7.01: sewage). The error bars in Fig. 5h represent the standard deviation derived from the measurements ( n = 3) for each added concentration
Article Snippet: Nimesulide was obtained from Alfa Aesar (Thermo Fisher Scientific).
Techniques: Standard Deviation, Derivative Assay, Concentration Assay, Construct
