Particle type | % | Mean ∅ | Concentration* |
---|---|---|---|
*×106 particles/g dry lung tissue. | |||
†ND, not determined. | |||
Crystalline silica | 7 | 2.3 | 596 |
Kaolinite | 24 | 1.2 | 2043 |
Muscovite | 51 | 2.2 | 4342 |
Fe compound | 6 | 0.5 | 511 |
Ti oxide | 3 | 0.3 | 255 |
Carbonaceous compounds | 3 | 0.7 | 255 |
Others | 6 | ND† | 511 |
All | 100 | 1.7 | 8513 |