| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Arctium lappa | Fruit | 103500.0 | 124200.0 | 1.4 | Wealth of India. |
| Areca catechu | Seed | -- | -- | * | |
| Argemone mexicana | Seed | 96000.0 | 188600.0 | 0.7 | * |
| Artemisia capillaris | Essential Oil | -- | -- | * | |
| Artocarpus altilis | Seed | 22900.0 | 52365.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Asclepias syriaca | Seed | 48230.0 | 168540.0 | 0.5 | * |
| Asimina triloba | Fruit | 480.0 | 6018.0 | -0.3 | * |
| Asparagus officinalis | Shoot | 910.0 | 11742.0 | 1.4 | * |
| Astragalus membranaceus | Root | -- | -- | Chemical Constituents of Oriental Herbs (3 diff. books) | |
| Azadirachta indica | Fruit | -- | 47250.0 | 0.3 | * |
| Bactris gasipaes | Fruit | 400.0 | 2450.0 | -0.3 | Duke, J. A. Writeups or information summaries on approximately 2,000 economic plants, USDA, ARS, Beltsville, MD 20705. |
| Bactris gasipaes | Seed | -- | 16000.0 | -0.8 | * |
| Balanites aegyptiacus | Seed | 120000.0 | 220000.0 | 1.0 | * |
| Benincasa hispida | Fruit | 870.0 | 22305.0 | -0.0 | * |
| Bertholletia excelsa | Seed | 140225.0 | 314300.0 | 1.8 | * |
| Beta vulgaris | Root | 460.0 | 3628.0 | 0.2 | USDA's Ag Handbook 8 and sequelae) |
| Bidens pilosa | Shoot | -- | -- | Jim Duke's personal files. | |
| Borago officinalis | Seed Essent. Oil | -- | 360000.0 | -1.0 | Jim Duke's personal files. |
| Borago officinalis | Seed | 45500.0 | 149370.0 | 0.4 | * |
| Brassica oleracea var. italica | Leaf | 380.0 | 4081.0 | -0.7 | USDA's Ag Handbook 8 and sequelae) |