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Table 2 Calibration curves, LODs, LOQs, and the detected ions of the five marker compounds

From: Simultaneous quantification and inhibitory effect on LDL oxidation of the traditional Korean medicine, Leejung-tang

Compound Linear range (μg/mL) Regression equationa Correlation coefficient (r 2) LODb(μg/mL) LOQc(μg/mL) Detected ion
1 1.00?-?500.00 y?=?15003.57x – 8421.59 1.0000 0.26 0.87 [M?-?H]-
2 5.00?-?500.00 y?=?3944.65x – 9262.82 0.9995 0.60 2.00 [M?-?H]-
3 5.00?-?500.00 y?=?1979.05x?+?4406.77 0.9999 2.44 8.13 [M?-?H]-
4 1.00?-?500.00 y?=?7952.91x – 4715.75 1.0000 0.52 1.72 [M?-?H]-
5 5.00?-?500.00 y?=?5737.29x – 3255.18 1.0000 0.48 1.59 [M?+?H]+
  1. a y: peak area (mAU) of compounds; x: concentration (μg/mL) of compounds.
  2. bLOD?=?3 × signal-to-noise ratio.
  3. cLOQ?=?10 × signal-to-noise ratio.