Table 6 Precision, repeatability, stability, recovery, and content of six standard lignans
From: Screening for cytotoxic chemical constituents from Justicia procumbens by HPLC–DAD–ESI–MS and NMR
Standard | Precision (RSD %) | Repeatability (RSD %) | Stability (RSD %) | Recovery | Contenta (mg/g) | ||
|---|---|---|---|---|---|---|---|
Intra-day | Inter-day | Mean | RSD % | ||||
4 | 0.86 | 1.63 | 1.78 | 1.39 | 101.49 | 1.66 | 34.70 |
8 | 0.99 | 1.37 | 1.93 | 0.88 | 101.20 | 1.97 | 8.93 |
10 | 1.10 | 1.85 | 1.96 | 1.16 | 98.63 | 2.00 | 10.10 |
16 | 0.64 | 0.99 | 1.31 | 0.73 | 100.51 | 1.53 | 28.36 |
19 | 0.92 | 1.72 | 1.81 | 1.57 | 99.37 | 1.95 | 12.22 |
20 | 0.51 | 0.94 | 1.35 | 0.94 | 99.04 | 1.83 | 29.05 |