|
Methods |
Nominal amount concentration
(µg mL-1) |
RSD% |
| Robustness |
Ruggedness |
| Variable alerteda |
| Acid volume (n=3) |
Reaction time (n=3) |
Different analysts (n=3) |
Different instruments (n=3) |
| GMF |
| Method A |
0.5 |
0.87 |
1.47 |
1.20 |
0.90 |
| |
1.0 |
1.14 |
1.98 |
1.06 |
1.10 |
| |
1.5 |
2.10 |
2.40 |
0.96 |
1.82 |
| Method B |
0.5 |
1.27 |
1.18 |
0.98 |
1.03 |
| |
1.0 |
1.65 |
1.75 |
1.20 |
1.30 |
| |
1.5 |
2.04 |
1.53 |
1.70 |
1.92 |
| Method C |
1.0 |
1.39 |
1.09 |
1.06 |
1.45 |
| |
2.0 |
1.56 |
1.61 |
1.50 |
1.70 |
| |
4.0 |
2.20 |
1.08 |
2.45 |
1.86 |
| MXF |
| Method A |
0.5 |
1.17 |
0.93 |
0.96 |
1.28 |
| |
1.0 |
1.54 |
1.05 |
1.41 |
1.67 |
| |
2.0 |
1.90 |
1.90 |
2.30 |
2.42 |
| Method B |
1.0 |
1.32 |
0.88 |
1.32 |
1.05 |
| |
2.0 |
1.85 |
1.42 |
1.90 |
1.80 |
| |
4.0 |
2.37 |
2.05 |
2.50 |
2.60 |
| Method C |
0.5 |
1.09 |
1.16 |
1.46 |
1.30 |
| |
1.0 |
1.50 |
1.75 |
2.55 |
1.64 |
| |
2.0 |
1.95 |
2.09 |
2.30 |
2.48 |
aVolume of 5.0 M HCl is (1.0 ± 0.2 mL) and reaction time is (10 ± 2.0 min) (after adding NBS) were used. |