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The concentration of zinc ions released was measured in ZnO NPs suspension in the absence and presence of lettuce seeds.
| ZnO NPs Concentration | No seeds |
Seeds |
||
|---|---|---|---|---|
| Zn+2 | Zn+2 released of the total Zn | Zn+2 | Zn+2 released of the total Zn | |
| 25 ppm | 0.643 | 2.572 | 0.394 | 1.576 |
| 50 ppm | 1.08 | 2.1 | 0.681 | 1.362 |
For elemental analysis, the measured amounts of Zn was reported in ppm (1 ppm equates to ppm).
