| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Houttuynia cordata | Root | -- | -- | * | |
| Houttuynia cordata | Shoot | -- | -- | * | |
| Hyoscyamus niger | Seed | 141000.0 | 219396.0 | 1.0 | * |
| Ipomoea batatas | Root | 1110.0 | 4087.0 | 0.4 | * |
| Isatis tinctoria | Seed | 23940.0 | 72960.0 | -0.3 | * |
| Jatropha curcas | Seed | 87960.0 | 162240.0 | 0.5 | * |
| Juglans regia | Seed | 228000.0 | 532760.0 | 3.6 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |
| Juglans nigra | Seed | 334590.0 | 349845.0 | 2.1 | USDA's Ag Handbook 8 and sequelae) |
| Juglans cinerea | Seed | 337270.0 | 348924.0 | 2.1 | * |
| Juniperus communis | Plant | -- | -- | * | |
| Juniperus communis | Fruit | -- | -- | Leung, A. Y. and Foster, S. 1995. Encyclopedia of Common Natural Ingredients 2nd Ed. John Wiley & Sons, New York. 649 pp. | |
| Justicia adhatoda | Seed | -- | 31700.0 | -0.6 | * |
| Lablab purpureus | Seed | 10.0 | 82.0 | -0.9 | * |
| Lactuca sativa | Leaf | 470.0 | 7833.0 | -0.1 | * |
| Lactuca scariola | Seed | 165616.0 | 204160.0 | 0.8 | * |
| Lagenaria siceraria | Fruit | 90.0 | 2465.0 | -0.3 | * |
| Lagenaria siceraria | Seed | 288000.0 | 336250.0 | 2.0 | * |
| Laurus nobilis | Fruit | 36000.0 | 176000.0 | 2.1 | * |
| Laurus nobilis | Plant | -- | -- | * | |
| Lawsonia inermis | Seed | 16415.0 | 35820.0 | -0.6 | ANON. 1948-1976. The Wealth of India raw materials. Publications and Information Directorate, CSIR, New Delhi. 11 volumes. |