| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Panax ginseng | Fruit | -- | -- | * | |
| Panax ginseng | Petiole | -- | -- | * | |
| Crataegus rhipidophylla | Fruit | -- | -- | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. | |
| Panax ginseng | Stem | -- | -- | * | |
| Dendrobium nobile | Stem | -- | 26.0 | -1.3 | * |
| Panax ginseng | Root | -- | -- | * | |
| Eriobotrya japonica | Leaf | -- | 28.0 | -0.4 | Chen, H.C. and Lin, S.M. 1988. Determination of Mineral Elements in Certain Crude Drugs (Part 1), Kaohsiung J. Med. Sci., 4: 259-272. |
| Taraxacum mongolicum | Plant | -- | 34.0 | -0.2 | * |
| Humulus lupulus | Fruit | -- | -- | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. | |
| Euodia rutaecarpa | Fruit | -- | 18.0 | -0.4 | * |
| Juglans nigra | Pericarp | -- | -- | * | |
| Allium sativum var. sativum | Root | -- | -- | * | |
| Stevia rebaudiana | Leaf | -- | -- | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. | |
| Quisqualis indica | Fruit | -- | 22.0 | -0.2 | * |
| Chamaemelum nobile | Flower | -- | -- | * | |
| Brassica rapa | Seed | -- | 15.0 | -0.9 | * |
| Eriocaulon sp | Leaf | -- | 21.0 | -0.4 | * |
| Nelumbo nucifera | Seed | -- | 28.0 | -0.5 | * |
| Carthamus tinctorius | Flower | -- | -- | * | |
| Elytrigia repens | Plant | -- | -- | Pedersen, M. 1987. Nutritional Herbology. Pederson Publishing. Bountiful, Utah. 377 pp. |