Table 2 Heavy metal concentrations (mg kg−1 DW) in root and leaf tissues of young and mature plants of garden cress and sweet basil
Plant samples | Cd | Pb | Ni | As | Cr | Co | Zn | Co | Mn |
|---|---|---|---|---|---|---|---|---|---|
Garden cress | |||||||||
Leaves (mature plants) | 4.02b | 39.0a | 6.4b | 1.9c | 12.7b | 1.14b | 46.7c | 19.6b | 79.7b |
Roots (mature plants) | 7.78a | 47.4a | 12.2a | 3.1a | 27.4a | 3.02a | 103.5a | 47.5a | 131.0a |
Leaves (seedlings) | 4.43b | 40.4a | 5.8b | 2.4b | 12.0b | 1.37b | 66.2b | 20.5b | 79.5b |
Sweet basil | |||||||||
Leaves (mature plants) | 1.66b | 17.3b | 1.9b | 0.73b | 5.3b | 0.48b | 39.7b | 13.3c | 48.4b |
Roots (mature plants) | 4.04a | 26.1a | 3.3a | 0.95a | 18.2a | 2.47a | 91.0a | 29.3a | 67.5a |
Leaves (seedlings) | 0.90c | 11.7c | 2.2b | 0.62c | 4.2b | 0.47b | 41.5b | 16.8b | 52.6b |