| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Allium sativum var. sativum | Bulb | 130.0 | 4947.0 | 1.2 | * |
| Allium ampeloprasum | Root | 520.0 | 3796.0 | -0.4 | * |
| Allium sativum var. sativum | Root | 315.0 | 850.0 | -0.7 | * |
| Alocasia macrorrhiza | Leaf | 570.0 | 15700.0 | -0.2 | * |
| Alocasia macrorrhiza | Root | 281.0 | 1875.0 | -0.6 | * |
| Aloe vera | Leaf | 190.0 | 4600.0 | -0.9 | * |
| Aloe spp. | Leaf | 23.0 | 4600.0 | -0.9 | * |
| Alpinia galanga | Rhizome | 310.0 | 2199.0 | -1.0 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Althaea officinalis | Root | 881.0 | 8160.0 | 0.1 | * |
| Amaranthus spinosus | Leaf | 4760.0 | 53335.0 | 2.4 | * |
| Amaranthus sp. | Leaf | 1559.0 | 53333.0 | 2.4 | * |
| Amomum xanthioides | Seed | -- | 5090.0 | 0.2 | * |
| Amorphophallus konjac | Leaf | 170.0 | 6538.0 | -0.8 | * |
| Amorphophallus campanulatus | Shoot | -- | 15200.0 | 0.0 | * |
| Amorphophallus konjac | Root | -- | 234.0 | -0.8 | * |
| Amorphophallus campanulatus | Root | 260.0 | 5720.0 | -0.2 | * |
| Amphicarpaea bracteata | Shoot | -- | 17300.0 | 0.2 | * |
| Anacardium occidentale | Seed | 240.0 | 823.0 | -0.6 | * |
| Anacardium occidentale | Fruit | 100.0 | 833.0 | -0.7 | * |
| Ananas comosus | Fruit | 62.0 | 1308.0 | -0.6 | * |