Table 2 Precision (inter-day and intra-day) and accuracy of the developed method
C nominal (ng.mL− 1) | Average of absorbance | RSD% | Cobserved (ng.mL− 1) | Accuracy %a |
|---|---|---|---|---|
Intera-day | ||||
15.0 | 1.69 | 9.7 | 16.1 | 107 |
25.0 | 1.43 | 6.3 | 22.8 | 91 |
35.0 | 1.04 | 11.1 | 32.6 | 93 |
Inter-day | ||||
15.0 | 1.69 | 14.0 | 14.2 | 95 |
25.0 | 1.43 | 11.2 | 24.1 | 96 |
35.0 | 1.04 | 11.0 | 34.4 | 98 |