| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Nardostachys chinensis | Rhizome | -- | 22.0 | -0.4 | * |
| Curcuma longa | Rhizome | -- | 22.0 | -0.4 | * |
| Diospyros virginiana | Leaf | 5.0 | 25.0 | -0.4 | * |
| Panax japonicus | Rhizome | -- | 20.0 | -0.4 | * |
| Cistanche salsa | Plant | -- | 13.0 | -0.4 | * |
| Erythroxylum novogranatense | Leaf | 19.0 | 22.0 | -0.4 | * |
| Cimicifuga dahurica | Rhizome | -- | 18.0 | -0.4 | * |
| Actaea dahurica | Rhizome | -- | 18.0 | -0.4 | Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195. |
| Eriocaulon sp | Leaf | -- | 21.0 | -0.4 | * |
| Blechnum orientale | Rhizome | -- | 17.0 | -0.4 | * |
| Belamcanda chinensis | Rhizome | -- | 17.0 | -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. |
| Drynaria fortunei | Rhizome | -- | 17.0 | -0.4 | * |
| Forsythia suspensa | Fruit | -- | 17.0 | -0.4 | * |
| Fragaria spp | Fruit | 1.1 | 17.0 | -0.4 | * |
| Gardenia jasminoides | Fruit | 10.0 | 17.0 | -0.4 | * |
| Sambucus nigra | Fruit | 3.0 | 17.0 | -0.4 | * |
| Cassia tora | Seed | -- | 31.0 | -0.4 | * |
| Vigna radiata | Seed | 26.0 | 31.0 | -0.4 | USDA's Ag Handbook 8 and sequelae) |
| Prunus persica | Seed | -- | 31.0 | -0.4 | * |
| Angelica laxiflora | Root | -- | 15.0 | -0.4 | * |