| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Sinapis alba | Seed | 6.0 | 8.0 | -0.6 | * |
| Sinomenium acutum | Rhizome | -- | 16.0 | 1.2 | * |
| Solanum melongena | Fruit | 0.6 | 20.0 | 0.6 | * |
| Solanum tuberosum | Tuber | 0.48 | 14.0 | 0.3 | * |
| Sophora subprostrata | Root | -- | 5.0 | -0.7 | * |
| Sophora angustifolia | Root | 5.0 | 10.0 | -0.2 | * |
| Sorbus aucubaria | Fruit | 0.8 | 4.0 | -0.7 | * |
| Spinacia oleracea | Plant | 0.1 | 24.0 | 1.1 | * |
| Spondias tuberosa | Fruit | -- | 0.63 | -0.9 | * |
| Spondias dulcis | Fruit | -- | 0.9 | -0.9 | * |
| Symphoricarpos orbiculatus | Stem | 3.8 | 132.0 | 0.4 | * |
| Syzygium jambos | Fruit | 0.1 | 0.6 | -1.0 | Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981. |
| Syzygium aromaticum | Flower | 3.0 | 9.0 | -0.8 | * |
| Syzygium cumini | Fruit | 2.3 | 14.0 | 0.1 | Morton, J.F., Major Medicinal Plants. 1977. Atlas of Medicinal Plants of Middle America. Bahamas to Yucatan. 1981. |
| Syzygium aromaticum | Fruit | 3.0 | 9.0 | -0.3 | * |
| Tamarindus indica | Leaf | -- | 21.0 | -0.2 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Taraxacum officinale | Leaf | 4.0 | 49.0 | 0.6 | * |
| Taraxacum mongolicum | Plant | -- | 19.0 | 0.6 | * |
| Taraxacum officinale | Root | 3.0 | 28.0 | 1.8 | * |
| Tephrosia candida | Plant | -- | 11.2 | -0.3 | * |