Table 2 Validation of the proposed method for the determination of SER in pure form
Sample concentration | % recovery (repeatability) | % recovery Intermediate precision |
|---|---|---|
Method I | ||
12 μg/mL | 100 | 101.34 |
102 | 102 | |
100.9 | 102 | |
X' | 100.78 | 101.78 |
± SD | 0.90 | 0.47 |
%RSD | 0.90 | 0.47 |
% Error | 0.45 | 0.26 |
20 μg/mL | 101 | 100 |
100.55 | 99.76 | |
99 | 98.56 | |
X' | 100.18 | 99.44 |
± SD | 1.1 | 0.85 |
%RSD | 1.1 | 0.85 |
% Error | 0.63 | 100 |
Method II | ||
2 μg/mL | 98.50 | 102 |
98.43 | 101.5 | |
99 | 101.8 | |
X' | 98.64 | 101.77 |
± SD | 0.40 | 0.21 |
%RSD | 0.40 | 0.21 |
% Error | 0.24 | 0.12 |
4 μg/mL | 99 | 99 |
99.88 | 98.5 | |
98.88 | 100 | |
X' | 99.25 | 99.17 |
± SD | 0.69 | 1.06 |
%RSD | 0.69 | 1.06 |
% Error | 0.40 | 0.62 |