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Table 1 Regression equation, precision, repeatability, stability, sensitivity and recovery of the eight compounds

From: A strategy for quality control of ginkgo biloba preparations based on UPLC fingerprint analysis and multi-component separation combined with quantitative analysis

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