| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Artemisia dracunculus | Essential Oil | -- | -- | * | |
| Levisticum officinale | Root | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Laurus nobilis | Leaf | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Glycine max | Plant | -- | -- | * | |
| Salvia officinalis | Plant | -- | -- | * | |
| Tagetes minuta | Flower Essent. Oil | -- | 3300.0 | * | |
| Mentha arvensis var. piperascens | Essential Oil | -- | -- | Jim Duke's personal files. | |
| Cinnamomum verum | Plant | -- | -- | * | |
| Hyacinthus orientalis | Flower | 0.032 | 0.46 | * | |
| Angelica archangelica | Root Essent. Oil | -- | -- | * | |
| Ferula gummosa | Plant | -- | -- | * | |
| Coriandrum sativum | Fruit | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Cinnamomum verum | Root Bark | -- | -- | * | |
| Apium graveolens | Fruit Essent. Oil | -- | 3000.0 | * | |
| Apium graveolens | Leaf Essent. Oil | -- | 20000.0 | * | |
| Apium graveolens | Root Essent. Oil | -- | 201000.0 | * | |
| Apium graveolens | Et | -- | 67000.0 | * | |
| Apium graveolens | Leaf | -- | -- | * | |
| Annona squamosa | Plant | -- | -- | * | |
| Artemisia dracunculus | Shoot Essent. Oil | -- | -- | * |