| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Polystichum polyblepharum | Plant | -- | -- | * | |
| Prunus serotina | Stem | -- | 2.7 | -1.0 | * |
| Prunus dulcis | Seed | 1.2 | 1.6 | -0.6 | Furr, A.K., et al. 1979 |
| Prunus serotina | Leaf | -- | 6.7 | -0.3 | * |
| Prunus domestica | Fruit | 0.03 | 1.7 | -0.3 | * |
| Prunus persica | Fruit | 0.15 | 4.5 | 0.6 | * |
| Pyrus communis | Fruit | 0.1 | 1.11 | -0.4 | * |
| Quercus stellata | Stem | -- | 2.5 | -1.0 | * |
| Quercus phellos | Stem | 0.4 | 12.6 | 0.7 | * |
| Quercus rubra | Stem | 0.16 | 9.9 | 0.2 | * |
| Quercus alba | Stem | 0.1 | 5.3 | -0.6 | * |
| Quercus velutina | Stem | 0.168 | 12.4 | 0.6 | * |
| Quercus rubra | Seed | -- | 0.4 | -0.8 | * |
| Raphanus sativus | Root | 0.01 | 0.71 | -0.8 | * |
| Rheum rhabarbarum | Pt | 0.1 | 4.0 | * | |
| Rhus glabra | Stem | -- | 6.7 | -0.3 | * |
| Rhus copallina | Stem | -- | 6.0 | -0.4 | * |
| Rhus copallina | Leaf | -- | 6.7 | -0.3 | * |
| Ribes uva-crispa | Fruit | 0.004 | 0.4 | -0.7 | * |
| Ribes rubrum | Fruit | 0.03 | 0.6 | -0.6 | * |