| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Peucedanum decursivum | Plant | 23.0 | 42.0 | -0.1 | * |
| Pyrus communis | Fruit | 0.15 | 26.6 | -0.1 | * |
| Senna occidentalis | Seed | -- | 41.0 | -0.1 | * |
| Jussiaea repens | Plant | -- | 40.0 | -0.1 | * |
| Brassica juncea | Leaf | 6.0 | 65.0 | -0.1 | * |
| Alisma plantago-aquatica | Rhizome | 54.0 | 68.0 | -0.1 | * |
| Rhodymenia palmata | Plant | -- | 39.0 | -0.1 | * |
| Rosmarinus officinalis | Plant | 30.0 | 38.0 | -0.1 | USDA's Ag Handbook 8 and sequelae) |
| Solanum melongena | Fruit | 18.0 | 25.6 | -0.1 | * |
| Corylus avellana | Seed | 20.0 | 39.0 | -0.2 | * |
| Taraxacum mongolicum | Plant | -- | 34.0 | -0.2 | * |
| Syzygium aromaticum | Flower | 10.0 | 30.0 | -0.2 | * |
| Zingiber officinale | Rhizome | -- | 57.0 | -0.2 | * |
| Nyssa sylvatica | Leaf | 2.0 | 55.0 | -0.2 | * |
| Ligustrum japonicum | Fruit | -- | 24.0 | -0.2 | * |
| Ligustrum lucidum | Fruit | -- | 24.0 | -0.2 | Chen, H.C. and Lin, S.M. 1988. Determination of Mineral Elements in Certain Crude Drugs (Part 1), Kaohsiung J. Med. Sci., 4: 259-272. |
| Capsicum frutescens | Fruit | 3.0 | 24.0 | -0.2 | USDA's Ag Handbook 8 and sequelae) |
| Cucurbita maxima | Leaf | 7.6 | 54.0 | -0.2 | * |
| Prunus armeniaca | Seed | 2.0 | 38.0 | -0.2 | * |
| Vigna unguiculata | Seed | 35.0 | 38.0 | -0.2 | USDA's Ag Handbook 8 and sequelae) |