Table 3 The concentrations of CdS/ZnS QDs located on root epidermis after the exposure of 7 days (slow depuration stages)
Plant | QDs | Sterilization treatment | Non-sterilization treatment | ||||
|---|---|---|---|---|---|---|---|
Cr (ng g−1) | Cs (ng g−1) | Ks (h−1) | Cr (ng g−1) | Cs (ng g−1) | Ks (h−1) | ||
Mangrove | Oleic acid-CdS/ZnS QDs | 131.9a ± 4.1b | 88.5 ± 3.5 | 9.315 × 10−3 | 133.8 ± 4.9 | 85.2 ± 2.7 | 9.815 × 10−3 |
PEG-COOH-CdS/ZnS QDs | 87.8 ± 3.5 | 65.1 ± 1.9 | 8.429 × 10−3 | 90.2 ± 3.2 | 70.7 ± 1.9 | 7.974 × 10−3 | |
MPA-COOH-CdS/ZnS QDs | 86.5 ± 2.6 | 68.5 ± 3.7 | 7.892 × 10−3 | 84.4 ± 1.7 | 64.4 ± 4.8 | 8.191 × 10−3 | |
Wheat | Oleic acid-CdS/ZnS QDs | 121.5 ± 8.1 | 80.5 ± 4.6 | 9.433 × 10−3 | 111.4 ± 5.9 | 75.4 ± 4.2 | 9.234 × 10−3 |
PEG-COOH-CdS/ZnS QDs | 81.3 ± 4.6 | 60.7 ± 2.9 | 8.371 × 10−3 | 85.5 ± 2.6 | 61.5 ± 3.6 | 8.689 × 10−3 | |
MPA-COOH-CdS/ZnS QDs | 79.0 ± 1.3 | 59.6 ± 1.9 | 8.284 × 10−3 | 81.7 ± 2.5 | 63.8 ± 5.1 | 8.004 × 10−3 | |