| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Taraxacum officinale | Root | 0.3 | 5.6 | 2.0 | * |
| Brassica oleracea var. botrytis l. | Leaf | 0.3 | 7.0 | -0.3 | * |
| Phaseolus lunatus | Seed | 0.3 | 7.0 | 0.4 | * |
| Liquidambar styraciflua | Leaf | 0.3 | 24.6 | 0.1 | * |
| Urtica dioica | Leaf | 0.3 | 2.7 | -0.4 | * |
| Brassica oleracea var. italica | Leaf | 0.3 | 7.0 | -0.3 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Pinus echinata | Shoot | 0.26 | 8.4 | -0.7 | * |
| Carya ovata | Shoot | 0.25 | 23.0 | 0.1 | * |
| Sassafras albidum | Leaf | 0.23 | 3.4 | -0.4 | * |
| Pisum sativum | Seed | 0.2 | 3.0 | -0.3 | * |
| Rubus chamaemorus | Fruit | 0.2 | 1.25 | -0.4 | * |
| Armoracia rusticana | Root | 0.2 | 1.2 | -0.5 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Symphoricarpos orbiculatus | Stem | 0.2 | 4.4 | -0.7 | * |
| Lactuca sativa | Leaf | 0.18 | 28.0 | 0.2 | * |
| Quercus velutina | Stem | 0.168 | 12.4 | 0.6 | * |
| Quercus rubra | Stem | 0.16 | 9.9 | 0.2 | * |
| Prunus persica | Fruit | 0.15 | 4.5 | 0.6 | * |
| Zea mays | Seed | 0.12 | 6.3 | 0.3 | * |
| Anethum graveolens | Plant | 0.1 | 4.7 | -1.0 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Diospyros virginiana | Stem | 0.1 | 8.0 | -0.1 | * |