| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Annona squamosa | Plant | -- | -- | * | |
| Annona reticulata | Bark | -- | -- | * | |
| Annona muricata | Plant | -- | -- | * | |
| Anogeissus latifolia | Leaf | 322000.0 | 329000.0 | 2.7 | * |
| Anogeissus latifolia | Bark | 100000.0 | 150000.0 | 0.1 | * |
| Apocynum cannabinum | Plant | -- | -- | * | |
| Araucaria bidwillii | Wood | -- | 3000.0 | -1.0 | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| Araucaria bidwillii | Leaf | -- | 7000.0 | -1.3 | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| Arbutus unedo | Leaf | -- | 160000.0 | 0.6 | * |
| Arbutus unedo | Bark | -- | 450000.0 | 2.7 | * |
| Arctostaphylos uva-ursi | Plant | 60000.0 | 200000.0 | 1.7 | * |
| Arctostaphylos uva-ursi | Leaf | 6960.0 | 70000.0 | -0.5 | * |
| Areca catechu | Seed | 150000.0 | 250000.0 | 2.1 | * |
| Argemone mexicana | Plant | -- | 11000.0 | -1.1 | * |
| Armoracia rusticana | Plant | -- | -- | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. | |
| Artemisia cina | Flower | -- | -- | * | |
| Artemisia absinthium | Leaf | 40000.0 | 77000.0 | -0.4 | * |
| Artemisia dracunculus | Plant | -- | -- | * | |
| Artemisia abrotanum | Plant | -- | -- | * | |
| Artocarpus heterophyllus | Bark | -- | 33000.0 | -0.9 | * |