| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Skimmia japonica | Leaf | -- | 280.0 | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Peucedanum ostruthium | Root | -- | -- | * | |
| Petroselinum crispum | Leaf | -- | -- | * | |
| Citrus limon | Essential Oil | -- | 64.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Citrus aurantiifolia | Fruit | -- | -- | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. | |
| Angelica archangelica | Fruit | -- | -- | * | |
| Angelica archangelica | Root | -- | 1500.0 | * | |
| Angelica dahurica | Root | -- | -- | * | |
| Angelica archangelica | Shoot | -- | -- | * | |
| Angelica archangelica | Seed | 0.6 | 3.8 | -1.0 | Wealth of India. |
| Angelica archangelica | Plant | -- | -- | * | |
| Ammi majus | Seed | -- | 400.0 | 1.0 | * |