| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Valerianella radicata | Plant | 572.0 | 701.0 | 6.4 | * |
| Lactuca sativa | Leaf | 2.7 | 974.0 | 5.5 | * |
| Cucurbita pepo | Seed | 75.0 | 200.0 | 4.4 | * |
| Aloe vera | Leaf | 11.0 | 770.0 | 4.2 | * |
| Lagenaria siceraria | Fruit | 7.0 | 157.0 | 3.8 | * |
| Cucumis sativus | Fruit | 2.0 | 157.0 | 3.8 | * |
| Phaseolus vulgaris | Fruit | 2.0 | 150.0 | 3.6 | * |
| Linum usitatissimum | Seed | 85.0 | 155.0 | 3.1 | Cunane, S. and Thompson, L. U., eds. 1995. Flaxseed in Human Nutrition. AOCS Press, Champaign IL. 384 pp. |
| Brassica oleracea var. botrytis l. | Flower | 3.0 | 97.0 | 3.1 | * |
| Prunus domestica | Fruit | 0.66 | 131.0 | 3.0 | * |
| Vigna unguiculata | Seed | 10.0 | 144.0 | 2.8 | * |
| Coptis chinensis | Rhizome | 90.0 | 600.0 | 2.7 | * |
| Coptis japonica | Rhizome | 90.0 | 600.0 | 2.7 | * |
| Coptis spp | Rhizome | 90.0 | 600.0 | 2.7 | * |
| Lycopersicon esculentum | Fruit | 1.0 | 120.0 | 2.7 | * |
| Cinnamomum sieboldii | Bark | -- | 40.0 | 2.6 | * |
| Papaver somniferum | Seed | 24.0 | 130.0 | 2.4 | * |
| Daucus carota | Root | 2.0 | 79.0 | 2.4 | * |
| Carya glabra | Shoot | 4.0 | 1100.0 | 2.3 | * |
| Raphanus sativus | Root | 2.0 | 72.0 | 2.1 | * |