| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Vaccinium myrtillus | Fruit | 5.0 | 60.0 | 3.1 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Beta vulgaris | Root | 0.76 | 32.0 | 2.6 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Taraxacum officinale | Plant | 19.0 | 50.0 | 2.3 | Chem. & Pharm. Bull. 38: 2205. |
| Vigna unguiculata | Seed | 13.0 | 39.0 | 1.9 | * |
| Vigna unguiculata | Seed | 13.0 | 39.0 | 1.9 | * |
| Spinacia oleracea | Leaf | 0.9 | 90.0 | 1.8 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Anacardium occidentale | Seed | -- | 35.0 | 1.5 | * |
| Rubus chamaemorus | Fruit | 3.0 | 38.0 | 1.4 | * |
| Quercus alba | Stem | 3.7 | 40.0 | 1.4 | * |
| Cinnamomum aromaticum | Bark | -- | 30.0 | 1.2 | * |
| Sorbus aucubaria | Fruit | 3.0 | 33.0 | 1.1 | * |
| Carya ovata | Shoot | 18.0 | 192.0 | 1.0 | * |
| Petroselinum crispum | Leaf | 2.2 | 65.0 | 0.9 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Fallopia japonica | Plant | 8.0 | 33.0 | 0.8 | Chem. & Pharm. Bull. 38: 2205. |
| Ribes nigrum | Fruit | 1.0 | 28.0 | 0.7 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Carya illinoensis | Seed | -- | 22.0 | 0.5 | * |
| Rosa canina | Fruit | 10.0 | 25.0 | 0.4 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Anethum graveolens | Plant | 1.1 | 28.0 | 0.4 | ACTA AGRIC SCAND SUPPL 22: 1980 |
| Raphanus sativus | Root | 0.44 | 15.7 | 0.4 | * |
| Ribes rubrum | Fruit | 0.9 | 23.0 | 0.3 | * |