| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Apium graveolens | Seed | 125.0 | 213.0 | -0.3 | * |
| Aquilegia vulgaris | Seed | -- | -- | * | |
| Arachis hypogaea | Seed | 250.0 | 300.0 | -0.3 | * |
| Arctium lappa | Plant | -- | -- | * | |
| Areca catechu | Seed | 9240.0 | 30240.0 | 0.1 | * |
| Argemone mexicana | Seed | -- | -- | * | |
| Artemisia capillaris | Essential Oil | -- | -- | * | |
| Asimina triloba | Fruit | 306.0 | 4956.0 | -0.0 | * |
| Asparagus officinalis | Shoot | 10.0 | 129.0 | 1.4 | * |
| Astrocaryum vulgare | Seed Oil | -- | -- | Szpiz, R. R., Pereira, D. A., Lago, R. C. A. 1980. Comparison Between Oils From Three Brazilian Palms. Bol. Rec. Cent. Tecnol. Agric. Aliment (Rio de Janeiro) 14: 33-46. Cent Technol Agric Aliment Empresa Brasil Pesqui Aropecu Rio de Janeiro, Brazil. | |
| Azadirachta indica | Fruit | -- | 630.0 | -0.2 | * |
| Bactris gasipaes | Seed | -- | 89000.0 | 0.9 | * |
| Bertholletia excelsa | Seed | 6200.0 | 12600.0 | -0.1 | * |
| Bidens pilosa | Plant | -- | -- | Jim Duke's personal files. | |
| Bixa orellana | Seed | 85.0 | 540.0 | -0.3 | Duke, J. A. and duCellier, J. L. 1993. CRC Handbook of Alternative Cash Crops. CRC Press. Boca Raton, FL 33431. 536 pp. US $312.50. |
| Brassica oleracea | Stem | -- | -- | * | |
| Brassica oleracea var. sabellica l. | Leaf | 30.0 | 190.0 | -0.6 | * |
| Brassica oleracea var. viridis l. | Plant | -- | -- | * | |
| Calendula officinalis | Seed | 10300.0 | 16100.0 | -0.1 | * |
| Camellia sinensis | Leaf | -- | -- | * |