| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Senna occidentalis | Seed | -- | 2880.0 | -0.0 | * |
| Carum carvi | Fruit | 2580.0 | 2863.0 | 0.3 | * |
| Acanthopanax gracilistylis | Root Bark | -- | 2840.0 | 1.1 | * |
| Salvia officinalis | Leaf | 444.0 | 2830.0 | -0.5 | * |
| Mentha arvensis var. piperascens | Plant | -- | 2830.0 | -0.4 | Suziki, A., Morimoto, I., and Okitzu, T., Elution of Metals from Crude Drugs, Shoykugaku Zasshi 36(3):190-195. |
| Rosa laevigata | Fruit | -- | 2830.0 | 0.3 | * |
| Rosmarinus officinalis | Leaf | 910.0 | 2825.0 | -0.5 | USDA's Ag Handbook 8 and sequelae) |
| Luffa aegyptiaca | Fruit | 140.0 | 2800.0 | 0.3 | * |
| Brassica oleracea var. viridis l. | Leaf | 170.0 | 2786.0 | -0.5 | * |
| Schisandra chinensis | Fruit | 414.0 | 2760.0 | 0.3 | * |
| Cucurbita maxima | Leaf | 388.0 | 2752.0 | -0.5 | * |
| Gentiana lutea | Root | 603.0 | 2740.0 | 0.1 | * |
| Rubus chingii | Fruit | -- | 2740.0 | 0.3 | * |
| Artemisia vulgaris | Shoot | -- | 2700.0 | -0.7 | CRC Handbook of Medicinal Herbs and/or CRC Handbook of Proximate Analyses |
| Zingiber officinale | Rhizome | 430.0 | 2690.0 | 1.1 | * |
| Zingiber officinale | Root | 188.0 | 2690.0 | 0.1 | * |
| Juglans cinerea | Seed | 2212.0 | 2676.0 | -0.1 | * |
| Siegesbeckia orientalis | Plant | -- | 2660.0 | -0.4 | * |
| Cichorium intybus | Leaf | 130.0 | 2652.0 | -0.6 | USDA's Ag Handbook 8 and sequelae) |
| Apium graveolens | Leaf | 99.0 | 2650.0 | -0.6 | USDA's Ag Handbook 8 and sequelae) |