Table 1.
Mixed model analysis comparing soil and road dust metal concentrations between e-waste exposed area and reference area using repeated measurements in all four seasons
| Matrice | Metal | Geometric mean of metal concentrations | Ratio of exposed/reference area metal concentrations | P | ||
|---|---|---|---|---|---|---|
|
| ||||||
| Exposed area (mg/kg, n=44) | Reference area (mg/kg, n=20) | Estimate | 95% CI | |||
| Soil | Pb | 213.61 | 91.92 | 2.32 | 1.42, 3.80 | 0.0011 |
| Cd | 0.32 | 0.07 | 4.34 | 2.27, 8.31 | <0.0001 | |
| Cr | 38.56 | 31.76 | 1.21 | 0.79, 1.87 | 0.3718 | |
| Mn | 606.63 | 614.98 | 0.99 | 0.70, 1.39 | 0.9366 | |
| Road dust | Pb | 392.58 | 95.72 | 4.10 | 2.74, 6.13 | <0.0001 |
| Cd | 1.14 | 0.36 | 3.18 | 2.11, 4.79 | <0.0001 | |
| Cr | 55.46 | 64.93 | 0.85 | 0.58, 1.25 | 0.4092 | |
| Mn | 529.35 | 493.26 | 1.07 | 0.81, 1.42 | 0.6174 | |