| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Pistacia vera | Seed | -- | 51.0 | 4.5 | * |
| Capparis spinosa | Fruit | -- | 699.0 | 3.5 | Wealth of India. |
| Fucus vesiculosus | Plant | 64.0 | 540.0 | 2.2 | * |
| Rumex acetosa | Leaf | 0.07 | 2.0 | 1.8 | * |
| Juniperus virginiana | Shoot | 3.0 | 10.0 | 1.7 | * |
| Glycine max | Seed | 0.5 | 16.0 | 1.2 | * |
| Ipomoea aquatica | Leaf | 0.15 | 1.5 | 1.0 | * |
| Cinnamomum verum | Bark | -- | 3.0 | 1.0 | * |
| Lepidium meyenii | Root | -- | 5.0 | 1.0 | * |
| Quercus phellos | Stem | 4.0 | 6.0 | 0.8 | * |
| Rhus glabra | Stem | 3.0 | 6.0 | 0.8 | * |
| Liquidambar styraciflua | Stem | 3.0 | 6.0 | 0.8 | * |
| Symphoricarpos orbiculatus | Stem | 4.0 | 6.0 | 0.8 | * |
| Quercus alba | Stem | 2.0 | 6.0 | 0.8 | * |
| Pteridium aquilinum | Leaf | -- | 0.9 | 0.2 | * |
| Moringa oleifera | Leaf | 0.05 | 0.7 | -0.1 | * |
| Pinus echinata | Shoot | 4.0 | 6.0 | -0.2 | * |
| Cocos nucifera | Seed | -- | 0.3 | -0.3 | Furr, A.K., et al. 1979 |
| Bertholletia excelsa | Seed | -- | 0.2 | -0.3 | Furr, A.K., et al. 1979 |
| Prunus dulcis | Seed | 0.1 | 0.2 | -0.3 | * |