| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Brassica oleracea var. botrytis l. | Flower | 2650.0 | 34240.0 | * | |
| Phaseolus lunatus | Seed | 8810.0 | 33820.0 | -0.3 | USDA's Ag Handbook 8 and sequelae) |
| Portulaca oleracea | Herb | 1500.0 | 33792.0 | -1.0 | * |
| Ipomoea aquatica | Leaf | 2520.0 | 33465.0 | -0.2 | * |
| Chenopodium album | Leaf | 5210.0 | 33188.0 | -0.3 | * |
| Bertholletia excelsa | Seed | 31510.0 | 32600.0 | -0.4 | * |
| Foeniculum vulgare | Fruit | 29560.0 | 32427.0 | 1.5 | * |
| Foeniculum vulgare | Seed | 29560.0 | 32427.0 | -0.4 | USDA's Ag Handbook 8 and sequelae) |
| Avena sativa | Seed | 29000.0 | 31000.0 | -0.5 | Jim Duke's personal files.* |
| Beta vulgaris | Root | 3930.0 | 30994.0 | 1.3 | USDA's Ag Handbook 8 and sequelae) |
| Lactuca sativa | Leaf | 1820.0 | 30333.0 | -0.4 | * |
| Juglans regia | Seed | 28090.0 | 29155.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Nelumbo nucifera | Seed | 9570.0 | 29000.0 | -0.5 | * |
| Valerianella locusta | Plant | 2030.0 | 28195.0 | 0.6 | * |
| Oenothera biennis | Seed | 26300.0 | 28068.0 | -0.6 | * |
| Abelmoschus esculentus | Fruit | 2710.0 | 27100.0 | 1.1 | USDA's Ag Handbook 8 and sequelae) |
| Cichorium endivia | Leaf | 1660.0 | 26731.0 | -0.6 | * |
| Helianthus tuberosus | Tuber | -- | 26493.0 | 1.0 | Izadoost, M. & Robinson, T., Synergism & antagonism in the pharmacology of alkaloidal plants, pp 137-58 in Craker, L. & Simon, J., eds., Herbs, Spices & Medicinal Plants: Recent Advances in Botany, Horticulture & Pharmacology, v. 2, 1987, 255pp. |
| Zea mays | Seed | 6360.0 | 26457.0 | -0.6 | USDA's Ag Handbook 8 and sequelae) |
| Raphanus sativus | Root | 1320.0 | 25580.0 | 0.9 | * |