Table 4.
Ruggedness measurements for LSV based on three replicate measurements of 4μM fenitrothion solution, sweep rate 100 mV/s, BPS pH.6, potential window (− 0.4: − 1 V), optimized accumulation time 140 s, and the variable was the concentration of safranine aromatic monomer solution which was varied in between (0.01–0.03 mM) in the construction step of the modified CPE.
| Variables | [C, Taken] μM | n | ip/μA | [C, Measured] μM | [C, Measured] μM–Mean | Recovery, %R | Precision r, %RSD |
|---|---|---|---|---|---|---|---|
| Concentration of safranine solution | |||||||
| 0.01 mM | 4 μM | 1 | 303.7 | 3.93 | 3.94 | 98.5 | 2.6 |
| 2 | 303.8 | 3.94 | |||||
| 3 | 304.1 | 3.95 | |||||
| 0.02 mM | 4 μM | 1 | 304 | 3.94 | 3.933 | 98.325 | 2.08 |
| 2 | 303.9 | 3.93 | |||||
| 3 | 303.9 | 3.93 | |||||
| 0.03 mM | 4 μM | 1 | 304.2 | 3.96 | 3.957 | 98.93 | 1.39 |
| 2 | 304 | 3.94 | |||||
| 3 | 304.4 | 3.97 |