Table 4 Quantitative results of organic acid standard samples
Compound | Retention Time (min) | Linear regression equation | linear correlation coefficient (R2) | Detection Limit(ng/mL) | Quantitation Limit(ng/mL) |
|---|---|---|---|---|---|
Lactic acid | 3.690 | Y = 1.395e5X | 0.9967 | 1 | 10 |
D-(-)-Tartaric acid | 7.480 | Y = 4.417e5X | 0.9972 | 0.5 | 1 |
Malic acid | 8.140 | Y = 1.489e5X | 0.9974 | 0.5 | 1 |
Succinic acid | 8.610 | Y = 2.08e4X | 0.9956 | 0.5 | 1 |
Fumaric acid | 9.410 | Y = 3.514e5X | 0.9995 | 0.5 | 1 |
Oxalic acid | 9.740 | Y = 6.329e3X | 0.9980 | 0.5 | 1 |
Citric acid | 10.670 | Y = 1.742e3X | 0.9915 | 0.5 | 1 |