Table 4.
DPV and DPAdSV determination of rutin in model samples using the method of standard additions. Number of repeated measurements n = 5.
| Method of measuring | Electrode | Mean content of rutin (μmol L−1) | Relative standard deviation s r (%) | Measurement bias B (%) | Recovery R (%) |
|---|---|---|---|---|---|
| DPV | CPE | 1.99 | 2.6 | −0.74 | 99.3 |
| 0.42 | 4.3 | 5.06 | 105.1 | ||
| IL/CPE | 2.07 | 6.3 | 3.58 | 103.6 | |
| IP/CPE | 2.01 | 4.7 | 0.31 | 100.3 | |
| 0.40 | 4.5 | 0.98 | 101.0 | ||
|
| |||||
| DPAdSV | CPE | 0.057 | 4.9 | −5.53 | 94.5 |
| 0.39 | 3.6 | −2.85 | 97.2 | ||
| IL/CPE | 0.064 | 9.1 | 7.27 | 107.3 | |
| 0.42 | 6.8 | 4.10 | 104.1 | ||
| IP/CPE | 0.063 | 5.4 | 4.50 | 104.5 | |
| 0.41 | 5.1 | 1.51 | 101.5 | ||