Table 1 Regression equation, precision, repeatability, stability, sensitivity and recovery of the eight compounds
Reference Substance | Regression Equation | R2 | Linear Range/ng | Precision | Repeatability | Stability | Recovery | LOD(ng) | LOQ(ng) | |
|---|---|---|---|---|---|---|---|---|---|---|
RSD% | RSD% | RSD% | % | RSD% | ||||||
6-HKA | y = 43,222 x—116 | 1.000 | 0.2–6 | 0.36 | 3.57 | 0.51 | 105 | 3.00 | 0.02 | 0.07 |
pHA | y = 19,127 x—240 | 1.000 | 0.11–3.3 | 0.70 | 2.90 | 1.21 | 101 | 3.44 | 0.01 | 0.03 |
GA | y = 9963 x + 1377 | 0.995 | 0.017–0.51 | 0.22 | 4.36 | 0.84 | 98.9 | 2.15 | 0.005 | 0.015 |
PA | y = 106,127 x—2,445 | 1.000 | 0.45–13.5 | 0.21 | 2.77 | 0.59 | 107 | 2.77 | 0.03 | 0.09 |
KR | y = 233,564 x—964 | 1.000 | 5–150 | 0.26 | 3.49 | 0.76 | 97.5 | 2.44 | 0.12 | 0.40 |
KRCG | y = 590,965 x—1,866 | 1.000 | 6.9–207 | 0.40 | 3.34 | 1.12 | 103 | 3.20 | 0.07 | 0.20 |
QRGR | y = 201,989 x—105 | 1.000 | 5.4–162 | 0.32 | 3.61 | 1.05 | 102.7 | 1.85 | 0.1 | 0.35 |
QCG | y = 327,385 x—1,535 | 1.000 | 7.7–331 | 0.24 | 3.22 | 0.72 | 98.1 | 2.90 | 0.16 | 0.52 |
lutin | y = 204,300 x—756 | 1.000 | 3.6–108 | 0.35 | 3.35 | 1.03 | 104 | 2.82 | 0.01 | 0.03 |
IR | y = 121,021 x—1,054 | 1.000 | 4.5–135 | 0.29 | 2.77 | 0.95 | 102 | 1.72 | 0.26 | 0.87 |
quercetin | y = 52,557 x + 112 | 1.000 | 1.13–33 | 0.34 | 3.49 | 1.11 | 105 | 2.46 | 0.07 | 0.24 |