| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Brassica oleracea var. botrytis l. | Flower | -- | -- | * | |
| Brassica oleracea var. capitata l. | Leaf | -- | -- | Wealth of India. | |
| Brassica oleracea var. botrytis l. | Leaf | -- | -- | * | |
| Brassica oleracea var. italica | Leaf | -- | 500.0 | Jim Duke's personal files. | |
| Brassica oleracea var. italica | Root | -- | 800.0 | * | |
| Ananas comosus | Fruit | -- | -- | * |