Skip to main content

Table 2 Linear regression, LODs and LOQs, precisions, reproducibility, stability and recovery for eight compounds

From: The chemotaxonomic classification of Rhodiola plants and its correlation with morphological characteristics and genetic taxonomy

Compound Regression equation r Linear range LOD LOQ Precision Reproducibility Stability Recover (n = 6)
(n = 2) (μg/mL) (μg/mL) (μg/mL) (n = 6) RSD (%) (n = 6) RSD (%) (RSD,%) Recovery (%) RSD (%)
Salidroside Y = 218.51X-0.4 0.9999 3.50-700 0.089 0.27 0.95 1.46 0.53 99.22 2.45
Tyrosol Y = 384.13X-3.9 0.9999 0.74-737 0.014 0.043 2.67 2.42 2.40 101.7 1.68
Gallic acid Y = 2923.6X-13.8 1 2.52-504 0.042 0.13 0.49 1.80 1.88 98.44 2.85
(+)Catechin Y = 339.77X + 3.7 0.9999 3.25-325 0.031 0.15 1.87 2.35 2.11 99.69 2.25
Rosarin Y = 1954.5X-2.7 0.9999 3.21-321 0.094 0.36 1.90 2.05 1.67 99.77 2.80
Rosavin Y = 2140.4X + 8.4 0.9999 0.071-284 0.0078 0.027 1.97 1.66 1.96 97.51 2.25
Rosin Y = 3076.8X-4.2 0.9999 1.25-375 0.037 0.18 1.45 1.19 1.10 100.5 2.77
Rhodionin Y = 166.15X + 1.3 0.9999 0.18-183 0.0094 0.032 2.32 2.12 2.61 99.4 1.72