| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Anisomeles malabarica | Flower | -- | 700.0 | -0.4 | Wealth of India. |
| Anisomeles malabarica | Stem | -- | 50.0 | -0.5 | Wealth of India. |
| Anisomeles malabarica | Root | -- | 50.0 | -0.7 | Wealth of India. |
| Anthriscus cerefolium | Plant | -- | 300.0 | -0.7 | * |
| Anthriscus cerefolium | Seed | -- | 9000.0 | -0.4 | * |
| Apium graveolens | Fruit | 42000.0 | 200000.0 | 3.1 | * |
| Apium graveolens | Seed | 4200.0 | 30000.0 | -0.2 | * |
| Apocynum androsaemifolium | Root | -- | 160.0 | -0.6 | * |
| Aralia cordata | Stem | -- | 750.0 | -0.5 | * |
| Arctium lappa | Root | 600.0 | 7500.0 | -0.3 | Wealth of India. |
| Arctium lappa | Leaf | -- | 285.0 | -1.0 | Wealth of India. |
| Ardisia japonica | Plant | 1000.0 | 2000.0 | -0.6 | * |
| Aristolochia serpentaria | Plant | -- | -- | * | |
| Armoracia rusticana | Plant | 200.0 | 3050.0 | -0.5 | List, P.H. and Horhammer, L., Hager's Handbuch der Pharmazeutischen Praxis, Vols. 2-6, Springer-Verlag, Berlin, 1969-1979. |
| Armoracia rusticana | Root | 500.0 | 2160.0 | -0.6 | * |
| Arnica montana | Rhizome | 5000.0 | 63100.0 | 0.3 | * |
| Arnica montana | Flower | 400.0 | 1400.0 | -0.4 | * |
| Arnica montana | Root | 17700.0 | 37400.0 | 1.1 | * |
| Artemisia pallens | Plant | 1300.0 | 5800.0 | -0.3 | * |
| Artemisia cina | Bud | 20000.0 | 30000.0 | -0.1 | * |