Table 2. Linearity, LOD, and LOQ of Rapid Method versus Standard Methoda.
| fortification Level (ppm) | rapid
method |
standard
method |
||||||
|---|---|---|---|---|---|---|---|---|
| intercept | R2 | LOD (ppm) | LOQ (ppm) | intercept | R2 | LOD (ppm) | LOQ (ppm) | |
| 5 | y = 1.0021x + 0.0022 | 0.9976 | 0.05 | 0.18 | y = 0.0815x + 0.067 | 0.9984 | 0.04 | 0.09 |
| 10 | y = 0.0788x + 0.0747 | 0.9985 | 0.04 | 0.12 | y = 0.0812x + 0.0745 | 0.9989 | 0.03 | 0.08 |
| 15 | y = 0.0807x + 0.0867 | 0.9991 | 0.03 | 0.09 | y = 0.0801x + 0.0868 | 0.9994 | 0.01 | 0.05 |
a
R2 (co-efficient of regression), limit of detection (LOD), and limit of quantification (LOQ).