Table 3.
Results from stability tests and spike analyses.
| Vegetable | Stability test | Spike analysis | ||
|---|---|---|---|---|
| N | CV (%) | Concentration without spiking (μg/g) | Recovery rate (%) | |
| Bok coy | 5 | 5.55 | 1490 | 74.8 |
| Cabbage | 5 | 5.33 | 821 | 75.0 |
| Celery | 5 | 2.40 | 2287 | 86.0 |
| Chinese cabbage | 5 | 1.39 | 1287 | 84.1 |
| Chinese kale | 5 | 3.26 | 607 | 78.0 |
| Lettuce | 5 | 5.49 | 298 | 89.0 |
| Mustard green | 5 | 2.40 | 2469 | 83.3 |
| Pak choi | 5 | 2.04 | 3057 | 91.4 |
| Water spinach | 5 | 4.42 | 2087 | 91.4 |
|
| ||||
| Mean±SD | 3.59±1.63 | 1600±934 | 83.7±6.52 | |
CV = coefficient of variation; SD = standard deviation.