Table 1.
Regression equation, correlation coefficients, linearity ranges, limits of detection (LOD) and limits of quantification (LOQ) of investigated compounds by HPLC-ELSD and HPLC-PDA.
| Analytes | Regression equation | r2 | Linear range (μg/mL) | LOD (μg/mL) | LOQ (μg/mL) |
|---|---|---|---|---|---|
| 1 | a Y = 1.6470x + 5.2583 | 0.9991 | 120.8–4800.0 | 60.0 | 120.2 |
| 2 | a Y = 1.7183x + 5.2056 | 0.9988 | 209.5–8360.0 | 104.5 | 209.1 |
| 3 | a Y = 1.7462x + 5.0751 | 0.9999 | 166.8–6640.0 | 83.0 | 166.5 |
| 4 | a Y = 1.5586x + 5.2005 | 0.9987 | 91.1–3640.0 | 45.5 | 91 |
| 5 | b Y = 6751.1x − 25160 | 1.0000 | 30.1–480.5 | 0.2 | 0.6 |
| 6 | b Y = 9126.3x − 43854 | 0.9999 | 30.1–480.5 | 0.2 | 0.6 |
| 7 | b Y = 6330.8x − 72981 | 0.9995 | 24.0–384.2 | 0.2 | 0.7 |
a
Y is the logarithmic value of the peak area, and x is the logarithmic value of the reference compound’s concentration (μg/mL);
b
Y represents the integrated peak areas, and x is the reference compound’s concentration (μg/mL).