| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Allium cepa | Bulb | 0.38 | 11.0 | USDA's Ag Handbook 8 and sequelae) | |
| Anacardium occidentale | Seed | -- | 2.4 | -0.6 | * |
| Artemisia vulgaris | Plant | 130.0 | 290.0 | 1.3 | Chem. & Pharm. Bull. 38: 2205. |
| Asparagus officinalis | Shoot | 0.45 | 180.0 | 1.6 | * |
| Bertholletia excelsa | Seed | -- | 6.1 | -0.4 | * |
| Beta vulgaris | Root | 0.5 | 9.8 | -1.0 | * |
| Boehmeria nivea | Plant | 110.0 | 230.0 | 0.7 | * |
| Brassica pekinensis | Leaf | 0.95 | 1.05 | -0.7 | * |
| Brassica oleracea var. capitata l. | Leaf | 0.35 | 203.0 | 0.2 | * |
| Capsicum annuum | Fruit | 0.355 | 16.0 | -0.4 | * |
| Capsicum frutescens | Fruit | -- | -- | * | |
| Carya illinoensis | Seed | -- | 2.8 | -0.6 | * |
| Carya ovata | Shoot | 0.7 | 45.0 | -1.4 | * |
| Carya glabra | Shoot | 0.4 | 110.0 | 0.0 | * |
| Carya ovata | Seed | -- | 4.3 | -0.5 | * |
| Cichorium endivia | Leaf | 1.0 | 1.2 | -0.7 | * |
| Cichorium intybus | Root | -- | -- | * | |
| Cinnamomum sieboldii | Bark | -- | 30.0 | -0.9 | * |
| Cinnamomum burmannii | Bark | -- | 30.0 | -0.9 | * |
| Cinnamomum verum | Bark | -- | 40.0 | 0.3 | * |