| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Cinnamomum aromaticum | Bark | -- | 70.0 | -1.5 | * |
| Cinnamomum sieboldii | Bark | -- | 200.0 | 0.1 | * |
| Cinnamomum verum | Bark | -- | 300.0 | 1.3 | * |
| Cinnamomum burmannii | Bark | -- | 200.0 | 0.1 | * |
| Cinnamomum sieboldii | Root Bark | -- | 300.0 | * | |
| Carya ovata | Seed | -- | 71.0 | -0.6 | * |
| Carya illinoensis | Seed | -- | 46.0 | -0.6 | * |
| Brassica oleracea var. capitata l. | Leaf | -- | 120.0 | -0.6 | Wealth of India. |
| Boehmeria nivea | Plant | 10000.0 | 12000.0 | 1.3 | * |
| Bertholletia excelsa | Seed | -- | 246.0 | -0.2 | Furr, A.K., et al. 1979 |
| Avena sativa | Plant | 1000.0 | 5700.0 | -0.2 | Jim Duke's personal files.* |
| Avena sativa | Seed | 500.0 | 1900.0 | 3.2 | Jim Duke's personal files.* |
| Artemisia vulgaris | Plant | 7900.0 | 11000.0 | 1.1 | Chem. & Pharm. Bull. 38: 2205. |
| Armoracia rusticana | Root | 185.0 | 745.0 | 0.4 | Wealth of India. |
| Ananas comosus | Fruit | 130.0 | 460.0 | -0.4 | * |
| Anacardium occidentale | Seed | -- | 184.0 | -0.4 | * |
| Abelmoschus esculentus | Plant | -- | 410.0 | -1.4 | Wealth of India. |