From: Toxic effects of brake wear particles on epithelial lung cells in vitro
 | Iron | Copper | Manganese | TC | OC | EC | Number | Mass |
---|---|---|---|---|---|---|---|---|
Copper | 0.974*** | Â | Â | Â | Â | Â | Â | Â |
Manganese | 0.991*** | 0.960*** | Â | Â | Â | Â | Â | Â |
TC | 0.500 | 0.533 | 0.527 | Â | Â | Â | Â | Â |
OC | 0.445 | 0.489 | 0.467 | 0.989*** | Â | Â | Â | Â |
EC | 0.883** | 0.811* | 0.955*** | 0.739 | 0.739 | Â | Â | Â |
Number | 0.793*** | 0.798*** | 0.785*** | 0.593* | 0.533 | 0.847* | Â | Â |
Mass | 0.815*** | 0.780*** | 0.811*** | 0.451 | 0.401 | 0.847* | 0.754*** | Â |
Surface | 0.829*** | 0.776*** | 0.846*** | 0.549 | 0.478 | 0.811* | 0.824*** | 0.952*** |