Journal of Analytical Methods in Chemistry / 2017 / Article / Tab 2

Research Article

Stereospecific Assay of (R)- and (S)-Goitrin in Commercial Formulation of Radix Isatidis by Reversed Phase High-Performance Liquid Chromatography

Table 2

Linearity, LOD, LOQ, precision, repeatability, and recovery of the RPLC separation method.

S-GoitrinR-Goitrin

Linearity range (μg/mL)0.08, 0.4, 2, 8, 400.1, 0.6, 3, 12, 60

LOD (ng/mL)2.02.9
LOQ (ng/mL)81.9118.0

Precision
 Concentration level (μg/mL)0.082400.1360
 Intraday (, RSD, %)0.60.30.70.60.81.1
 Interday (, RSD, %)0.90.51.01.30.50.4

Repeatability (, RSD, %)2.12.6

Recovery
 Mean (%)100.199.4
 RSD (, %)0.50.3

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