Table 2.
Parameters linear range, regression equation, correlation coefficient (r2), retention time (tr), limit of quantification (LOQ) and limit of detection (LOD) for HCAA compounds.
| Compound | Linear range (ng/mL) | Regression equation | r | tr (min) | LOQ (ng/mL) | LOD (ng/mL) |
|---|---|---|---|---|---|---|
| 1 | 0.05–20 | y = 0.0566x − 0.0007 | 0.9999 | 3.1 | 0.05 | 0.02 |
| 2 | 0.5–200 | y = 0.0169x + 0.0290 | 0.9989 | 2.8 | 0.1 | 0.025 |
| 3 | 0.5–200 | y = 0.0092x − 0.0097 | 0.9996 | 3.1 | 0.1 | 0.02 |
| 4 | 0.5–200 | y = 0.0243x + 0.0136 | 0.9999 | 2.5 | 0.05 | 0.01 |
| 5 | 0.5–200 | y = 0.0083x − 0.0287 | 0.9964 | 2.2 | 0.25 | 0.1 |
| 6 | 0.1–40 | y = 0.0619x + 0.0038 | 0.9999 | 3.4 | 0.02 | 0.005 |
| 7 | 0.25–100 | y = 0.0830x + 0.0113 | 0.9999 | 3.1 | 0.05 | 0.01 |
| 8 | 0.1–40 | y = 0.0558x + 0.0011 | 0.9985 | 3.4 | 0.02 | 0.008 |
| 9 | 0.5–200 | y = 0.0591x + 0.1257 | 0.9992 | 2.8 | 0.05 | 0.01 |
| 10 | 0.5–200 | y = 0.0329x + 0.0324 | 0.9998 | 2.8 | 0.1 | 0.025 |
| 11 | 0.5–200 | y = 0.0201x + 0.0128 | 0.9995 | 2.5 | 0.1 | 0.025 |
| 12 | 0.25–100 | y = 0.0332x + 0.0089 | 0.9995 | 2.9 | 0.1 | 0.025 |
| 13 | 0.25–100 | y = 0.0174x + 0.0020 | 0.9988 | 2.6 | 0.05 | 0.01 |
| 14 | 0.25–100 | y = 0.0512x + 0.0038 | 0.9995 | 3.0 | 0.05 | 0.02 |
| 15 | 0.5–200 | y = 0.0228x + 0.0007 | 0.9983 | 2.2 | 0.1 | 0.025 |
| 16 | 0.5–200 | y = 0.0050x − 0.0114 | 0.9982 | 1.9 | 0.1 | 0.04 |
a
y means peak area ratio and x means concentration (ng/mL).