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Results of robustness study of high-performance liquid chromatography assay for gastrodin from water extracts of Gastrodia elata Blume.
| Wavelength (nm) | Flow rate (mL/min) | |||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| 219 | 220 | 221 | 0.97 | 1.00 | 1.03 | |
| N | 2218 | 2270 | 2322 | 2241 | 2270 | 2289 |
| T | 1.14 | 1.13 | 1.13 | 1.10 | 1.13 | 1.18 |
| R | 1.40 | 1.44 | 1.39 | 1.39 | 1.44 | 1.40 |
| α | 1.21 | 1.22 | 1.23 | 1.22 | 1.22 | 1.21 |
α = selectivity factor; N = number of theoretical plate; R = resolution; T = tailing factor.
