Table 3.
Assay validation sheet of the proposed ratio difference method for the determination of Br and Ti.
| Parameter | Br | Ti |
|---|---|---|
| Accuracy (mean±SD) | 100.16±1.32 | 100.17±1.66 |
| Specificity | 100.40±2.29 | 101.23±1.30 |
| Precision | ||
| Repeatabilitya | 100.21±0.73 | 100.06±0.32 |
| Intermediate precisionb | 100.07±0.40 | 100.09±0.39 |
| Linearity | ||
| Slope | 0.0762 | 0.0811 |
| Intercept | 0.1105 | 0.0780 |
| Correlation coefficient r | 0.9999 | 0.9998 |
| Range (μg/mL) | 5–30 | 10–60 |
a
The intraday (n=3), average of three concentrations (10, 15 and 20 μg/mL) for Br and (20, 30 and 40 μg/mL) for Ti repeated three times within the day.
b
The interday (n=3), average of three concentrations (10, 15 and 20 μg/mL) for Br and (20, 30 and 40 μg/mL) for Ti repeated three times on three consecutive days.