Table 1 Linear equation, limits of detection and quantitation (LOD and LOQ), relative recovery, and precision obtained for heavy metals
From: Effects of food processing methods on migration of heavy metals to food
Heavy metals | Linear equation | Regression coefficient | Matrix | LOD (μg/kg) | LOQ (μg/kg) | Relative recovery (%) | RSDr (%) |
|---|---|---|---|---|---|---|---|
Pb | y = 1.0032x − 0.0465 | 0.999 | Ginseng powder | 0.859 | 2.863 | 89.919 | 2.963 |
Edible oil | 0.011 | 0.036 | 78.071 | 1.385 | |||
Peach leaves | 0.122 | 0.405 | 81.452 | 7.723 | |||
Cd | y = 1.0008x − 0.0121 | 0.999 | Spinach leaves | 0.123 | 0.410 | 71.495 | 1.995 |
Ginseng powder | 0.023 | 0.076 | 77.300 | 0.838 | |||
Peach leaves | 0.012 | 0.040 | 83.250 | 18.552 | |||
As | y = 0.9988x + 0.017 | 0.999 | Spinach leaves | 0.010 | 0.035 | 77.644 | 6.580 |
Al | y = 51,332.1x + 4246.1 | 0.999 | Spinach leaves | 0.047 | 0.158 | 101.306 | 5.016 |
Peach leaves | 0.016 | 0.054 | 107.450 | 2.027 |