| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Allium cepa | Bulb | 0.3 | 11.0 | 0.1 | * |
| Allium sativum var. sativum | Bulb | 1.4 | 9.7 | -1.3 | * |
| Allium cepa | Seed | -- | 18.2 | 0.3 | * |
| Alisma plantago-aquatica | Rhizome | 11.0 | 15.0 | 1.0 | * |
| Albizia julibrissin | Bark | 5.0 | 6.0 | -0.5 | * |
| Akebia quinata | Stem | -- | 7.0 | -0.7 | * |
| Actaea dahurica | Rhizome | -- | 8.0 | -0.6 | Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195. |
| Acorus calamus | Rhizome | -- | 4.0 | -1.5 | 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. |
| Aconitum carmichaelii | Tuber | -- | 12.0 | 0.0 | * |
| Achyranthes bidentata | Root | 6.0 | 11.0 | -0.1 | * |
| Acanthopanax gracilistylis | Root Bark | -- | 14.0 | 1.0 | * |
| Abelmoschus manihot | Leaf | 2.5 | 21.5 | -0.2 | * |
| Abelmoschus esculentus | Fruit | 1.0 | 9.0 | -0.3 | USDA's Ag Handbook 8 and sequelae) |