| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Angelica archangelica | Plant | -- | -- | Pakistan Encyclopedia Planta Medica. 1986. | |
| Angelica archangelica | Root | -- | -- | * | |
| Angelica sinensis | Essential Oil | -- | 450000.0 | 1.0 | Jim Duke's personal files. |
| Angelica sinensis | Root Essent. Oil | -- | 739800.0 | 1.0 | Jim Duke's personal files. |
| Angelica sinensis | Root | -- | -- | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. | |
| Apium graveolens | Stem Essent. Oil | -- | 2000.0 | * | |
| Apium graveolens | Essential Oil | 2000.0 | 5000.0 | -1.0 | * |
| Apium graveolens | Seed Essent. Oil | -- | 24100.0 | * | |
| Apium graveolens | Root Essent. Oil | -- | 5000.0 | -1.0 | * |
| Apium graveolens | Leaf Essent. Oil | -- | 2000.0 | * | |
| Cnidium officinale | Rhizome | -- | -- | * | |
| Scutellaria baicalensis | Root Essent. Oil | -- | -- | * |